AU2022218536B2 - Adaptive flexible hybrid energy systems of solar, wave and wind for utility scale plants - Google Patents
Adaptive flexible hybrid energy systems of solar, wave and wind for utility scale plants Download PDFInfo
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/10—Alleged perpetua mobilia
- F03G7/115—Alleged perpetua mobilia harvesting energy from inertia forces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B17/00—Other machines or engines
- F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/007—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with means for converting solar radiation into useful energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/008—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with water energy converters, e.g. a water turbine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/02—Rotary fluid gearing of the hydrokinetic type with pump and turbine connected by conduits or ducts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
- F16H19/0622—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member for converting reciprocating movement into oscillating movement and vice versa, the reciprocating movement is perpendicular to the axis of oscillation
- F16H19/0628—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member for converting reciprocating movement into oscillating movement and vice versa, the reciprocating movement is perpendicular to the axis of oscillation the flexible member, e.g. a cable, being wound with one string to a drum and unwound with the other string to create reciprocating movement of the flexible member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
- F16H2019/0609—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member the reciprocating motion being created by at least one drum or pulley with different diameters, using a differential effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
- F16H2019/0681—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member the flexible member forming a closed loop
- F16H2019/0686—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member the flexible member forming a closed loop the flexible member being directly driven by a pulley or chain wheel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/08—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and oscillating motion
- F16H2019/085—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and oscillating motion by using flexible members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
This invention focuses to the development of the Adaptive Flexible Hybrid Energy Systems of
Solar, Wave, and Wind (HESSWW) including its subsystems and components such as the
3DFPNFO (a 3D flexible floating structure), the Flexible Interlinked Wave Energy System
(FIWES), transmission systems, damping systems and the Adaptive Solar Energy System
(ASES). Wind turbines are also included. Integrations of the above subsystems are also
included.
1/35
DRAWINGS
The Centred Prestressed Rope Beam (CPRB)
(2) Hollow Tube
(12) Circular Rope Supports
(13) Tensional Rope/ Cable
(a)
13 12(
(b)
1-2
(c)
Figure 1
The Compressional Beam
(a) (b) (c)
Figure 2
Description
1/35
The Centred Prestressed Rope Beam (CPRB)
(2) Hollow Tube
(12) Circular Rope Supports
(13) Tensional Rope/ Cable
(a)
13 12(
(b)
1-2
(c)
Figure 1
The Compressional Beam
(a) (b) (c)
Figure 2
[0001] It is related to the fields of:
(1) Ocean Engineering and Structural Engineering (Structural Mechanics, Structural Dynamics, Fluid Mechanics (Hydrodynamics) and Finite Element
Method for dynamic fluid-structure Interaction analysis).
(2) Wave energy convertors, wind turbines, damping systems, mechanical power
transmission systems.
[0002] Floating energy systems require technical improvements in adapting to the
hydrodynamics environment while reaching desired cost efficiency for generating
electricity. The matter is aimed to be solved based on technical solutions of structures
combining energy systems of wave and solar and wind while stabilizing the structure
on the body of water.
1.1 Drive Beam
[0003] A Drive Beam is a beam functional as both a drive shaft and a beam. It is capable
to both twisting moments and bending moments.
1.2 The Centred Prestressed Rope Beam (CPRB) (Figure 1).
[0004] The CPRB is developed for structures of energy systems such as floating energy
systems and grounding energy systems, including wave energy systems and solar
tracking systems. It is also applied for systems of floating objects.
[0005] The development purposes of the CPRB related to its structure are:
(1) These energy systems require their structures to be light,
(2) Lengths of its beams, (floating) posts, drive shafts or any type of hollow tube
components may need to be long enough.
[0006] Components and arrangements of the CPRB:
(1) A Hollow Tube (#2). The Hollow Tube might be a (hollow) cylinder, or square,
or rectangular, or polygon (pentagon, hexagon, heptagon, octagon...).
(2) A number of Tensional Ropes/ Cables (#13).
(3) A number of Circular Rope Supports (#12). The shape of the Circular Rope
Supports is just small enough to fit inside the Hollow Tube. The gap between
the installed Circular Rope Supports and the Hollow Tube needs to be small
enough for installation and operation. The thickness of the Circular Rope
Supports must be enough for structural stability. The Circular Rope Supports
(#12) are secured to the Tensional Ropes/ Cables (#13).
(4) The Tensional Ropes/ Cables are stressed and positioned inside the Hollow
Tube. Its two ends are secured to the two ends of the Hollow Tube.
(5) If the number of Tensional Ropes/ Cables is more than one, these Tensional
Ropes/ Cables are distributed closest to the wall of the Hollow Tube, depending on loads the CPRB bears. Figure 1 (c) presents some cases of two, three orfourTensional Ropes/ Cables distributed.
[0007] Operations of the CPRB:
(1) The CPRB can work as a beam, a (floating) post, a drive shaft or a Drive Beam
in structures of energy systems. The Tensional Ropes/ Cables improve bending
resistance of the Hollow Tube while keeping the CPRB to be light and capable
to be assembled fully at factories. Its smaller size and weight help for
transportation and onsite installation.
(2) Bending resistance of the CPRB is improved thanks to contributions of the
Tensional Ropes/ Cables which make the tensional/ compressional areas of
cross sections of the Hollow Tube to be improved: the tensional area of the
wall of the Hollow Tube is reduced and its compressional area is enlarged. This
leads to the tensional area of the CPRB (combined from the Hollow Tube and
the Ropes/ Cables) and the compressional area of the CPRB (enlarged in
comparison with the Hollow Tube alone) are both to be more capable for
tensional and compressional forces. Thus, bending resistance of the Hollow
Tube is improved using prestressed Tensional Ropes/ Cables fitted inside.
[0008] Tensional Ropes/ Cables can help long CPRBs to be strait enough.
1.3 The Compressional Beam (Figure 2)
[0009] It is a beam, a group of beams, a frame or a combined frame-beams that is
compressional.
[0010] The main function of the Compressional Beam in proposed structures such as
the Surrounding Prestressed Rope Beam is to bear loads causing internal
compressional forces. It can also be used as a Drive Beam if its cross section is
appropriate for twisting moments.
[0011] The Compressional Beam is a main part of the Dual Prestressed Rope Beam
[0012] There are three types of Compressional Beams:
(1) Type 1: Beam only (Figure 2 (a))
(2) Type 2: Frame only (Figure 2 (b))
(3) Type 3: Frame-Beam (Figure 2 (c))
1.4 The Rope/ Cable Supporting Clamp and the Beam's Crossed Rope (Figure 3)
[0013] The Rope/ Cable Supporting Clamp (#1) is the part that mounts ropes/ cables/
bars/ beams and secures them to Compressional Beams to form a Surrounding
Prestressed Rope Beam (SPRB).
[0014] The Beam's Crossed Ropes" (#5 in Figure 3 (d)) are crossed ropes connecting
every two consecutive Rope/ Cable Supporting Clamps.
1.5 The Surrounding Prestressed Rope Beam (Figure 3)
[0015] The Surrounding Prestressed Rope Beam (SPRB) is developed in order to bear
light weights such as solar panels over long spans subjected to dynamic loads caused
by winds or rotations of the SPRB, which require the SPRB to be capable to multiple
directions of loads.
[0016] The SPRB comprises a Compressional Beam with prestressed Ropes/ Cables
distributed along and around to improve bending resistant in all directions whereas
its weight is light. Furthermore, if the Compressional Beam is also a Drive Beam, the
SPRB is capable to rotate masses mounted on it such as solar panels.
[0017] The word "Rope" mentioned here implies rope, cable, bar or even beam, which
are capable to tensional force. However, the flexibility and light weight of rope or cable
are preferred.
[0018] The SPRB composes of:
(1) Compressional Beams positioned inside as the core. These Compressional
Beams are responsible for compressional forces.
(2) Beam's Surrounding Ropes, which are ropes distributed around the
Compressional Beams. These Beam's Surrounding Ropes are responsible for
tensional forces.
(3) Rope/ Cable Supporting Clamps distributed along the Compressional Beams.
(4) Beam's Crossed Ropes connecting every two consecutive Rope/ Cable
Supporting Clamps.
[0019] The Compressional Beams and Ropes are secured together via the Rope/ Cable
Supporting Clamps.
[0020] Characteristics of the SPRB:
(1) capable to bear dynamic loads in different directions, including wind loads and
earthquakes.
(2) light and capable to reach long spans.
(3) developed to bear light weights such as solar panels.
(4) capable to work as a drive shaft/Drive Beam for rotating arrays of solar panels.
(5) Developed to be a type of linkages of 3DFPNFO (The System of Three
Dimensional Flexible Porous Net of Multiple Floating Objects), which might
require to maintain constant distances between every two connected points
of the two consecutive floating objects.
(6) The Beam's Surrounding Ropes are able to be stressed further differently and
separately in order to adjust the Compressional Beam in the most possible
straight shape under all cases of loads and Angles of Rotation.
(7) The quantity of Ropes and their specifications depend on different
circumstances such as loads and directions of loads. The quantity of Ropes can
be one or more. The quantity of Compressional Beams can also be one or
more. Some Ropes can be replaced with straight beams or curved beams or
bars.
(8) Cross sections of a SPRB are different in shapes and sizes, depending on how
loads are distributed alongthe SPRB. Thus, the Rope/Cable Supporting Clamps
of a SPRB are different accordingly.
(9) Functions of the Rope/ Cable Supporting Clamps, which is a part of the SPRB,
are included in the SPRB: the Beam's Surrounding Ropes can be stressed further or less using a mechanism integrated in the Rope/ Cable Supporting
Clamps; The Beam's Surrounding Ropes can also be repositioned closer to or
further from the Compressional Beam using the "Slide and Lock" Mechanism
integrated in the Rope/ Cable Supporting Clamps.
(10) The SPRB can be continuous over supports.
[0021] This type of light weight beam, the SPRB, is developed for long span structures.
The SPRB aims to bear more loads while saving cost for materials, transportation,
installation and reducing number of posts supporting beams.
[0022] The SPRB is used for any kind of structures, especially energy systems such as
wind, solar and wave based, either floating or grounding, with or without solar
tracking systems. It is also used for any kind of floating structures, especially flexible
floating structures for coping/ adapting with large displacements caused by waves.
[0023] If the SPRB is used for bending moments only, the profile of its Compressional
Beam can be a frame or in the shapes of L, C, Z, T, H, I, Round and Polygon (such as
square, pentagon, hexagon, heptagon, octagon).
[0024] If the SPRB is used for both bending and twisting moments, the profile of its
Compressional Beam can be in the shapes of Round or Polygon (such as square,
pentagon, hexagon, heptagon, octagon).
[0025] If the SPRB does not need to be capable to twisting moments for rotating, its
Compressional Beams does not need to include the function of twisting. In this case,
the SPRB is still capable with features to be applicable in solar energy systems without
tracking, eitherfloating or grounding, such as agricultural solar or floating solar energy
systems which require cheaper structures and long spans.
[0026] Figure 3 demonstrates some types of the SPRB.
[0027] Figure 3 (al), (a2), (a3) and (a4), representing Type A of SPRB: this type of SPRB
is based on a single Compressional Beam which is also a Drive Beam. The type is
appropriate for structures of energysystems (solar, wave, wind)with orwithoutsolar
tracking systems, ether floating or grounding.
[0028] Figure 3 (b1), (b2), (b3) and (b4),representing Type B of SPRB: this type of SPRB
is based on a single Compressional Beam which is a frame. The type is appropriate for
structures of energy systems (solar, wave, wind turbines) without solar tracking
systems, ether floating or grounding.
[0029] Figure 3 (c1), (c2), (c3) and (c4), representing Type C of SPRB: this type of SPRB
is based on a Compressional Beam which is composed of a Drive Beam and a frame.
This type is appropriate for structures of energy systems (solar, wave, wind turbines)
with or without solar tracking systems, ether floating or grounding. It is more
appropriate for longer beam bearing heavier loads. It is also more capable to dynamic
loads such as earthquake than the SPRB Type A.
[0030] Figure 3 (d) demonstrates how to stabilise two consecutive the Rope/ Cable
Supporting Clamps using Beam's Crossed Ropes (#5). These ropes are important in
maintaining the stability of the SPRB.
[0031] The SPRB can be enhanced with Centred Prestressed Rope Beam (CPRB)s
integrated.
1.6 The Dual Prestressed Rope Beam (DPRB)
[0032] The DPRB is composed from the Surrounding Prestressed Rope Beam (SPRB)
and the Centred Prestressed Rope Beam (CPRB). There are three types of DPRBs:
(1) Type 1: Prestressed Ropes/ Cables are externally secured to Compressional
Beams. The Prestressed Ropes/ Cables are distributed around the
Compressional Beams. Thus, Type 1 is the Surrounding Prestressed Rope Beam
(2) Type 2: Prestressed Ropes/ Cables are internally secured to Compressional
Beams. The Prestressed Ropes/ Cables are distributed inside the
Compressional Beams. Thus, type 2 is the Centred Prestressed Rope Beam
(3) Type 3: Prestressed Ropes/ Cables are internally and externally secured to
Compressional Beams. Type 3, which is the combination of the SPRB and the
CPRB, is the full version of the Dual Prestressed Rope Beam (DPRB).
[0033]The Prestressed Ropes/Cables helptoenhance bending resistance of the DPRB.
It can be produced at factories by skilled workers and equipment, leading to saving
costs of manufacturing, transportation and onsite installation.
[0034] The DPRB is developed for structures of energy systems such as floating energy
systems and grounding energy systems, including wave energy systems and solar
tracking systems. It is also applied for systems of floating objects.
1.7 Elevational Crossed Dual Axes Pivot Arm (ECDAPA) (Figure 4)
[0035] The ECDAPA is developed to be integrated in solar trackers with minimized
twisting moments for both axes. It composes of two rotational axes with technical
features developed as follows:
(1) Rotations of both axes are elevational. In other words, both axes are not
vertical at all times.
(2) Each of both axes are right angle (90 degrees crossed) to the other and they
are in the same plane. Thus, these axes have a common point.
[0036] The reason of the above technical features is to be able to distribute masses
equally in two sides of each of both axes, helping to minimize twisting moments of
both axes at once. Thanks to having a common point as mentioned above, twisting
moments of both axes are minimized at the same time by moving the centre of mass
to the common point. The above method using the common point for moment
minimization with respect to both the two axes is called "The Twisting Moment
Minimization Method for Elevational Crossed Dual Axes" (TMMM4DA). The above
dual axes are called "The Elevational Crossed Dual Axes".
[0037] In addition, the ECDAPA allows to arrange solar panels in arrays similar to that
of single axis solartracking systems. Such way of arrangement helps to avoid rotations
of vertical axis, leading to saving area of land around the tracker.
[0038] The ECDAPA is composed of parts presented in Figure 4, in which:
(1) Each of the following axes: the first axis (the axis of the Drive Beam #7 in Figure
4 (b)) and the second axis (the axis of #6 in Figure 4 (b)) have to be 90 degrees
crossed:
a. right angle to each other and
b. in the same plane (having one common point called XY).
(2) If any mass (the mass of the tilting array of solar panels) having its centre of
mass at the point XY, the mass is balanced (or twisting moments equal zero)
with respect to both axes.
(3) Solar panels are secured on the tilting beams #10 and distributed equally in
two side of the first axis #7 in order to minimize twisting moments of the first
axis. The "Slide and Lock" Mechanism #11 can move the Tilting Beams #10
including solar panels up or down in order to minimize twisting moments of
both the first axis and the second axis because both axes have the same
common point XY (The Centre of mass of the sectioned tilting array of solar
panels is called point M. The above adjustment is to move the point M closest
to the common point XY. Thus, twisting moments of both axes are minimized
simultaneously).
1.8 The Flexible Porous Net of Wave Absorbers/ Dampers (FPNWA/D) (Figure 5)
[0039] The FPNWA/D is a net composed of Flexible Elements (#1in Figure 5 (a)) such
as ropes or cables and any kinds of wave absorbers or dampers (#2 in Figure 5 (a))
which are secured to nodes of the net. In addition, the FPNWA/D also has Flexible
Crossed Elements (#3 in Figure 5 (b)) for improving resistant of displacements/
oscillations. The FPNWA/D can be two or three dimensions.
[0040] The FPNWA/D is basically a distributed floating damping system. It is applied
to damp other floating objects. Its net can be laid in any direction surrounding an area
or underneath or connecting to other floating objects in order to provide the
capabilities of:
(1) Absorbing wave energy leading to reducing oscillations of floating objects.
(2) Damping.
(3) Mooring.
[0041] The FPNWA/D can also be integrated in the System of Three-Dimensional
Flexible Porous Net of Multiple Floating Objects (3DFPNFO). Groups of Wave
Absorbers/ Dampers (WA/D) can be linked together using the Net of Vertical
Connections, the Net of Horizontal Upper Connections and the Net of Horizontal
Lower Connections, making the FPNWA/D to be a 3DFPNFO. However, in this case,
the 3DFPNFO with WA/D integrated, which is now a distributed damping system, is
applied for damping instead of floating and stabilizing objects on the surface of water
like the general 3DFPNFO.
[0042] Some of special typical types of the wave absorbers can be applied for the
FPNWA/D are:
(1) Wave absorbers containing liquid partially filled such as liquid tanks/ floats.
(2) Used tyres.
[0043] Figure 5 demonstrates a FPNWA/D.
[0044] It is noticed that, a vertical rope/ cable with one or more wave absorber(s)
hanging vertically deep in water and underneath a floating object is also a simplified
version of the FPNWA/D.
[0045] As a Wave Absorber/ Inertial Hydrodynamic Based Damper (WA/IHBD) is a
specific type of a Wave Absorber/ Damper (WA/D), the Flexible Porous Net of Wave
Absorbers/ Inertial Hydrodynamic Based Dampers (FPNWA/IHBD) is a specific type of
the FPNWA/D.
1.9 The System of Three-Dimensional Flexible Porous Net of Multiple Floating Objects
(3DFPNFO) (Figure 6)
[0046] In addition to typical methods to station, individually, offshore floating objects
such as wind turbines, a solution of gathering these floating objects, if they are small
enough, working together as a whole, is developed.
[0047] If floating objects stand alone, they may need to be moored or damped
individually in order to prevent capsizing or moving away from the designated
positions. Instead of doing so, this solution is developed to provide a method for
stability of large quantity of floating or submerged independent distributed objects:
how to gather these objects working by linking together in coping with dynamic loads
of wind, waves and earthquakes. In other words, each floating object relies, flexibly,
to other objects of the whole to maintain its stability on the body of water.
[0048] Types of objects examined:
(1) Three-dimensional (3D) floating objects. For example, these objects are
floating structures, floating wave energy converters, floating wind turbines or
floating solar islands/ arrays.
(2) Submerged objects. For example, they are submerged wave energy
converters, anchors, wave absorbers, dampers, ...
(3) All 3D floating objects require capsizing prevention whereas submerged
objects might not need to meet the requirement.
[0049] The 3DFPNFO mainly comprising:
(1) Elements, which are linkages of ropes connecting floating or submerged
objects. The word "rope" mentioned here implies rope, cable, bar, beam or
frame. However, the flexibility and light weight of rope or cable are preferred
where it is applicable. Depending on circumstances, the following Elements
might also be added: a) Compressional Beam or Dual Prestressed Rope Beam
(DPRB) and b) The Stretchable Vertical Crossed Elements (SVCE).
(2) Floating or submerged objects. The submerged objects can be simply masses,
dampers or wave absorbers.
(3) Anchoring/ mooring/wave absorbing/ damping systems orthe Flexible Porous
Net of Wave Absorbers/ Dampers (FPNWA/D) can be integrated.
(4) The method connecting/ securing these objects together to assure the
geometrical flexibility and stability of the whole system of 3DFPNFO.
[0050] Purposes of technical development of the 3DFPNFO:
(1) Guaranteeing that all 3D floating objects are uncapsizable on the surface of
water subjected to waves, winds, earthquakes or any other kind of loads.
(2) Maintaining distances, relatively, between these consecutive floating or
submerged objects.
(3) Limiting horizontal movements of the floating or submerged objects caused by
waves, currents of water or winds or any kind of loads.
(4) Limiting vertical movements of the floating or submerged objects. Damping
systems may need to be integrated to reduce oscillations of the floating
objects.
(5) Gaining further vertical movements, within limits, as required by stability
conditions, of the floating objects: if Floating Damping Wave Energy Convertor
(FDWEC)s, which are wave energy convertors with dampers integrated, are
included, an appropriate solution might be included to gain more potential
energy for the FDWECs generating electricity.
[0051] Floating objects on the surface of water may be required to be uncapsizable.
For this purpose, each 3D floating objects must be connected via Elements from at
least 4 points that are not in the same plane. These points are called nodes. The object
can be modelled as a 3D frame which has trusses linking from each node to all other
nodes for dynamic fluid-structure integration analysis. If an object has 4 nodes, the
number of trusses is 6.
[0052] Arrangements of the Elements:
[0053] There are three types of arrangements of Elements integrated for the stability
of the 3DFPNFO: the Net of Horizontal Lower Connections; the Net of Vertical
Connections and the Net of Horizontal Upper Connections. They are described below:
[0054] The Net of Horizontal Lower Connections (Figure 6 (a), #3):
(1) Firstly, each floating object must have at least 3 nodes for horizontal lower
connections. The ideal number of nodes for horizontal connections is 4.
Horizontal connection is the connection between two nodes of two
consecutive floating objects via an Element assumed to be parallel with the horizontal plane. All the three mentioned nodes and Elements connecting from these nodes to consecutive floating objects are assumed to be in the same horizontal plane as well. These three nodes are called (Horizontal) Lower
Nodes. Thus, all floating objects are connecting together, from Lower Nodes
of every floating object to selected Lower Nodes of consecutive floating
objects. These connections are called Horizontal Lower Connections. All
Elements of the Horizontal Lower Connections form a net that is called the Net
of Horizontal Lower Connections.
(2) The Elements of the Net of Horizontal Lower Connections are called the
Horizontal Lower Elements (#3).
(3) So, the first requirement of connections of the 3DFPNFO is the establishment
of the Net of Horizontal Lower Connections for the group of floating objects.
(4) The Lower Nodes of a floating object form a plane called "The Base Plane of
Floating Object" (BPFO)
(5) Every floating object also have at least 3 points defining another plane that, if
the water is static, it is the same with the plane of the surface of water. The
plane is call "Equilibrium Plane of Floating Object" (EPFO).
(6) In designs of the Net of Horizontal Lower Connections, the BPFO needs to be:
a) Parallel with EPFO which is horizontal.
b) The elevation of the BPFO is as low as possible, even positioned deeply in
water. If the elevation of BPFO is lower than that of EPFO, the system
requires less horizontal force for holding the floating objects from
capsizing.
c) Might contains the centre of mass of the floating object in some
circumstances.
d) The centre of mass of the floating object should be as low as possible,
ideally lower than the EPFO.
(7) The Net of Horizontal Lower Connections contributes the following functions
to the 3DFPNFO:
a) Holding/ mooring/anchoring the floating objects within the designated
positions.
b) Contributing to maintaining distances between consecutive floating
objects.
c) Providing damping effects vertically if the Elements are stressed hard
enough.
d) It is one of the parts ofthe the 3DFPNFO required for its stability.
[0055] The Net of Vertical Connections (Figure 6 (e), #5):
(1) The 3DFPNFO requires stability related to capsizing 3D floating objects. Thus,
the 3DFPNFO integrates the Net of Vertical Connections for stability of its third
dimension, which is the condition of Stability for capsizing prevention. The Net
of Vertical Connections is described below:
(2) Beside at least 3 Lower Nodes in the Horizontal Plane (two dimensions) of the
Horizontal Lower Connections mentioned above, every floating object has at
least one node, which is called Upper Node, for vertical connections to secure
the stability of the third dimension of the object. If these Upper Nodes are
being hold/ moored properly, the floating object will not capsize. Upper Nodes
of every floating object are connected to selected Lower Nodes of consecutive
floating objects. This type of (vertical) connection is called Vertical Connection.
(3) Elements of the Vertical Connection, which is called Vertical Crossed Elements,
form a net called the Net of Vertical Connections. There are two types of
Vertical Crossed Elements: Standard Vertical Crossed Elements, which are un
stretchable, and Stretchable Vertical Crossed Elements. Flexible Vertical
Crossed Elements such as ropes or cables are preferred.
(4) The Net of Vertical Connections provides the following functions to the
3DFPNFO:
a) It helps to prevent capsizing: if the floating object is moved upward by a
wave (Figure 6 (g)), the Upper Node of the floating object is moved far away
from its equilibrium position, resultingto pulling and lifting up the bottoms
of other linked consecutive floating objects (by pulling forces #9 in Figure
6 (g). The pulling forces #9 are caused by tensions of the Elements/ Ropes).
In addition, if there are also links from Upper Nodes of the floating object
to Upper Nodes of the linked consecutive floating objects (Figure 6 (c), #4), the tops of the linked Consecutive floating objects are being pulled as well.
Thus, the motions of the floating object pull the linked consecutive floating
objects. As a result, the inertial forces caused by the linked consecutive
floating objects response and prevent the motions. It means that the
floating object is prevented from both capsizing and oscillating. Thus, if a
large numberof floating objects interact together, the tops of these objects
tend to stay close to their equilibrium positions. The floating objects are
not only being hold from capsizing but also being damped as well.
b) Holding/ mooring/anchoring top of the floating objects within the
designated positions as explained above.
c) Contributing to maintaining distances between consecutive floating
objects.
d) Providing damping effects vertically as explained above.
e) It is one of the components of the the 3DFPNFO required for its stability.
(5) If the 3DFPNFO includes FDWECs, the Net of Vertical Connections might be
integrated with Stretchable Vertical Crossed Elements, which are the Multi
Vertical Rectangular Elements (Figure 8 (a), #1) or the Excessive Vertical
Crossed Elements (Figure 8 (b), #2) or the Vertical Crossed Spring Elements
(Figure 8 (c), #3)), for reaching larger, but still within limit, vertical
displacements. As a result, more potential energy is gained for generating
electricity using wave energy convertors such as the FDWECs.
[0056] The Net of Horizontal Upper Connections (Figure 6 (c), #4): Elements of
connections between Upper Nodes of consecutive floating objects form a net called
The Net of Horizontal Upper Connections, which is parallel with the Net of Horizontal
Lower Connections. The Elements of the Net of Horizontal Upper Connections are
called the Horizontal Upper Elements (#4). The functions of the Net of Horizontal
Upper Connections are the same to that of the Net of Horizontal Lower Connections.
However, unlike the Net of Horizontal Lower Connections, which contributes stability
to the bottoms of floating objects, the Net of Horizontal Upper Connections
contributes stability to the tops of the floating objects.
[0057] In addition to the Horizontal Lower/ Upper Elements, the Net of Horizontal
Lower/ Upper Connections also has the Horizontal Lower Crossed Elements (Figure 6
(b), #8b) and the Horizontal Upper Crossed Elements (Figure 6 (d), #8d).
[0058] Technical Features of the 3DFPNFO:
[0059] The 3DFPNFO is developed based on the identification of the dynamic
interactions between objects of the 3DFPNFO which is in turn relying on three
dimensional flexible structural connections between floating objects via Elements
with adding damping systems and/or the FPNWA/Ds. The structure of the 3DFPNFO is
flexible (geometrically variable) thanks to flexible Elements integrated or joint
connections of Elements applied. The features of the 3DFPNFO, which can be proven
with results from computations of dynamic fluid-structure interaction analysis, are
described below:
(1) Group Damping: The whole 3DFPNFO is a damping system of which the floating
objects plays both roles: damping and being damped in group. When an object
moves far enough from the equilibrium position, tensions appear in the
Elements between the object and its linked consecutive objects, transferring
and distributing the energy of motions from the object to all other linked
consecutive objects of the system through Elements. It can be understood
that, in this case, the object shares its displacements to all other consecutive
objects of the system. Thus, a large enough number of objects on the surface
of water behave in the same manner, neutralizing motions of every object of
the system and keeping Elements to be tensional (to be closer to straight) at
all times, which, in turn, limit these objects moving too farfrom the equilibrium
positions: the whole systems is being damped because all its objects are
oscillating closer to the equilibrium positions. Thus, it can be concluded that
damping effects is created based on dynamic fluid-structure interactions
between the objects, which are both damping and being damped.
Suppose that all Elements are springs, the system is obviously a damping
system, of which the floating objects are both damping and being damped. If
these springs are replaced with elements having much harder stiffness such as ropes/cables/ bars/beams, the system still remains to be damped but displacements of the objects with be much less. The efficiency of this type of damping can be proven with dynamic fluid-structure interaction analysis. If floating objects are separated, oscillations of them are much larger. In contrast, when these floating objects are connected with ropes or cables, their oscillations caused by waves are reduced significantly.
(2) Group Mooring/ Positioning/ Distancing between objects: as the tensional
forces appear in Elements between each object and other linked consecutive
objects, the object is being moored by its linked consecutive objects. Thus,
these floating objects are mooring and being moored together, reducing
mooring/ anchoring to ground directly. In addition, the Elements keep the
distance between two nodes not to be greater than the length of the linkage
(if the linkage is a rope/cable/bar) or keep the distance between two nodes to
be fixed and equal to the length of the linkages (if the linkage is an element of
truss/ frame/ beam capable to compressional force)
(3) Group Absorbing (Wave Energy): The 3DFPNFO, which includes the FPNWA/D
(Figure 6 (f)) are beneficial in absorbing wave energy and reducing oscillations
of the floating objects. The FPNWA/D also provides efficiencies of Group
Damping to the 3DFPNFO as well.
(4) Group Stability: thanks to the method of 3D flexible connections of floating
objects described above, including the effects of damping, mooring and wave
energy absorbing systems, the floating objects are able to be stable when
linking/ connecting together to form the 3DFPNFO.
[0060] If the 3DFPNFO is applied for energy systems which requires less oscillations,
damping systems or the FPNWA/D should be integrated. If the 3DFPNFO is applied for
energy systems which include FDWECs, the need of gaining more potential energy
with the 3DFPNFO leads to the integration of The Stretchable Vertical Crossed
Elements. In addition, the structure of the 3DFPNFO can also be beneficial when
grounding instead of floating. In this case, all features and components/ devices
related to floating are excluded.
[0061] If the 3DFPNFO requires clearance for waterways between its arrays, The
Solution of Arch Waterway through Linked Floating Objects can be integrated as well.
1.10 The Solution of Arch Waterway through Linked Floating Objects (SAWFO) (Figure 7)
[0062] Typical floating photovoltaic systems usually use walkways supported by floats
for maintenance operations and other activities. A cheaper solution for linking floating
objects especially for floating solar arrays of large power plants, is: using waterway by
boats instead of walkways. The solution provides an alternative method for structural
connections between consecutive floating objects such as solar arrays. The
replacement connections must maintain the stability of floating objects while allowing
boats going through.
[0063] The SAWFO are presented in Figure 7. Instead of using the flexible ropes for
the 3DFPNFO as showed in Figure 7 (Span (a)), a solution such as each of the seven
options presented in Figure 7 (Spans (b), (c), (d), (e), (f), (g), (h)) can be applied. The
solution is, in fact, an interpretation of the System of Three-Dimensional Flexible
Porous Net of Multiple FloatingObjects (3DFPNFO) with arches as waterway for boats.
[0064] The SAWFO might be incorporated with the Flexible Porous Net of Wave
Absorbers/ Dampers (FPNWA/D) or some other types of additional mooring/
anchoring for stability of the floating objects. It is a part of the 3DFPNFO.
1.11 The Stretchable Vertical Crossed Elements (SVCE) (Figure 8)
[0065] The purpose of the method using SVCE is to gain more potential energy for
wave energy convertors thanks to furthervertical displacements of the floats reaching
to higher or lower levels due to taller waves.
[0066] Figure 8 (d) and Figure 8 (e) show that the SVCE with springs of #3 allow further
vertical displacements than the Standard Vertical Crossed Elements of #8. Based on
the idea, the developed method provides three options for gaining more potential
energy as showed in Figure 8 (a) and Figure 8 (b) and Figure 8 (c) respectively. The
built-in spring on top of the Linear Motion Electric Generators absorbs the gaining potential energy then redistribute the stored energy during motions of the next phases of generating electricity.
[0067] Figure 8 presents three typical solutions of the SVCE: the Multi Vertical
Rectangular Elements (#1), the Excessive Vertical Crossed Elements (#2) and the
Vertical Crossed Spring Elements (#3). These solutions allow further relative
displacements of every two consecutive posts.
[0068] The method is applied for energy systems with Floating Damping Wave Energy
Convertor (FDWEC)s which are wave energy convertors with built-in dampers.
1.12 The Flexible Compressible Net of Ropes (FCNR) (Figure 9)
[0069] The FCNR is developed to apply for structures of energy systems such as
floating or grounding solar energy systems.
[0070]The word "rope" here implies both rope or cable which are capable to bear
tensional forces.
[0071] The FCNR is a combination of two or three-dimensional flexible structures of
ropes orcables and Compressional Bars forsupporting light loads such as solar panels,
particularly, light reinforced flexible solar panels. The Compressional Bars are secured
in the FCNR where required to be capable to compressional forces. Otherwise, where
required to be capable to tensional forces, ropes or cables are responsible. It can be
understood that these Compressional Bars are "floating" individually in the net of
ropes to form a structure called FCNR.
[0072] The key technical feature of the FCNR is to be able to bear compressional forces
where required although it is a flexible structure of ropes/ cables.
[0073] Generally, the FCNR comprises:
(1) A three-dimensional (3D) Net of Ropes/ Cables, including Nets of Tensional
Vertical Crossed Elements (#2) and Nets of Downward/ Upward Hanging
Ropes/ Cables (#5 and #6), and
(2) A number of Compressional Bars (#3) secured to the 3D Net of Ropes/ Cables
where required to be capable to compressional forces.
[0074] Particularly, for supporting arrays of solar panels or similar loads, the FCNR is
mainly composed of:
(1) A Net of Tensional Vertical Crossed Elements. These Elements are Ropes/
Cables/ Bars (#2).
(2) Compressional Bars (#3).
(3) An Upper Net of Ropes/ Cables (#4).
(4) A Net of Downward Hanging Ropes/ Cables (#5) for downward loads and a Net
of Upward Hanging Ropes/ Cables (#6) for upward loads
(5) A Lower Net of Ropes/ Cables (#7) might be integrated.
[0075] The arrangement of the above components is described below:
(1) Tensional Vertical Crossed Elements (#2) connect from the top (or the bottom)
of every Compressional Bar (#3) to the bottom (or the top) of its consecutive
Compressional Bars (Figure 9 (a)).
(2) Top ends of Compressional Bars are secured to and distributed in the Upper
Net (#4) in (Figure 9 (a)).
(3) The Downward Hanging Ropes/ Cables (#5) in (Figure 9 (b)) and the Upward
Hanging Ropes/ Cables (#6) in (Figure 9 (c)) are secured to bodies of every
Compressional Bar. These Hanging Ropes/ Cables are downward (or upward)
curved, which help to transfer all forces caused by loads to Posts (#1).
(4) A Lower Net (#7) in (Figure 9 (d)) might be added: Bottom ends of
Compressional Bars are secured to the Lower Net.
(5) Finally, all Nets of the FCNR are secured to Posts (#1) of the system structure
where the FCNR requires supports of Posts.
[0076] Technical features and benefits of the FCNR:
(1) The main features of the FCNR are:
(a) It is a combination of bars-ropes structure. Compressional Bars secure
to nets of ropes/ cables. These bars are responsible for compressional
forces which help the flexible structure of ropes/ cables to maintain
its required shapes in all cases of loads. The ropes/ cables are
responsible for tensional forces.
(b) These Compressional Bars are floating in the FCNR.
(2) It is able to work like beams for supporting solar panels. It can hold the Upper
Net to be close to straight or flat.
(3) It does not need to be anchored directly to ground. It just needs to be secured
to posts.
(4) It is convenient for floating solar structure as it is flexible and light.
(5) It is a good choice for light reinforced flexible solar panels due to its flexibility
and its capability to bear upward loads caused by wind on light solar panels.
(6) It is convenient for complex terrains due to its flexibility.
(7) It is a good choice for agricultural solar energy systems because it can be
designed to adapt tall or thin posts and long spans between posts, leaving
large space underneath arrays of solar panels or long distances between
posts.
(8) It is also a good choice for floating solar energy systems thanks to its
flexibility.
(9) It is good to both downward and upward loads thanks to Downward and
Upward Hanging Ropes/ Cables.
(10) The structure of FCNR is light and ease to manufacture, transport, install and
maintain because all components can be assembled together at factories by
skilled workers with appropriate equipment. Thus, it helps saving costs of
manufacturing and onsite installation.
[0077] Some Special Versions of FCNR:
[0078] The First Special Version of FCNR: It comprises Compressional Bars secured
together in V shape (Figure 9 (e)). Bottom ends of the Compressional Bars (#3) are attached to a rope (#5) of the Net of Downward Hanging Ropes. This version is more suitable to downward loads.
[0079] The second Special Version of FCNR: It comprises Compressional Bars secured
together in T shape (Figure 9 (f)). The Compressional Bars (#3) are attached to both
rope (#5) and rope (#6) of the Net of Downward Hanging Ropes and the Net of Upward
Hanging Ropes. This version is suitable to both downward and upward loads.
1.13 Definitions of Movable Group and Stationed Group, (Vertically) Slidable Float and Stationed Float, Bottom Position and Top Position, and Travel Range of Wave Energy
Systems.
[0080] Components of wave energy systems based on the System of Three
Dimensional Flexible Porous Net of Multiple Floating Objects (3DFPNFO) is divided into
two groups:
(1) Rotor Group: contents rotors of electric generators and mechanical power
transmission systems such as linear motion gear racks, Linear Motion Drive
Shafts, Rotational Drive Shafts and floats which are secured to the mechanical
power transmission systems.
(2) Stator Group: contents stators of electric generators and the rest of the wave
energy system, including floats which do not belong to the Rotor Group.
[0081] Depending on different proposed configurations of the system of 3DFPNFO,
one of the above Rotor/ Stator Groups is anchored/ moored and the other Group is
free. The anchored/ moored Rotor or Stator Group is called the Stationed Group. The
free Rotor or Stator Group is called the Movable Group. Elevations, where the
Stationed Group are positioned, are called Desired Variable Elevations. The Desired
Variable Elevations rely on waves at all times and are determined regarding to
maximizing wave energy harvested.
[0082] The relative motions between Movable Groups and Stationed Groups, which
implies the differential motions between stators and rotors of electric generators, help
to generate electricity.
[0083] Similarly, there are two groups of floats: Stationed Floats and (Vertically)
Slidable Floats. Stationed Floats support structures of the wave energy system floating
on the surface of water whereas (Vertically) Slidable Floats are allowed to slide
upwards/ downwards along (vertical) Floating Posts of structures supported by the
Stationed Floats.
[0084] The (Vertically) Slidable Floats are designed to be slidable linearly. They are
allowed to slide from Bottom PositionstoTop Positionswhich are located on the body
of the (vertical) Floating Posts. Both the Bottom and Top Positions are referred from
bottom/ top limit positions of vertical linear motions of the (Vertically) Slidable Floats,
defining travel distances of the (Vertically) Slidable Floats in comparison with the
Stationed Group. The travel distances from the Bottom Positions to the Top Positions
are called Travel Ranges.
[0085] Depending on styles of 3DFPNFO with respect to damping devices selected, the
Stationed Floats and the (Vertically) Slidable Floats can be combined or separated. If
they are combined, the Floats function as both the Stationed Floats and the (Vertically)
Slidable Floats. Details are presented in descriptions of components of the Flexible
Interlinked Wave Energy System (FIWES).
1.14 The Twisting Linear-to-Rotational Transmission System by Drive Ropes (TLRTS By DR)
(Figure 10 (a))
[0086] A typical dual axes solar tracker requires two separate drive motors for each of
the two axes. Thus, multiple trackers need a large number of drive motors leading to
higher cost of installation and maintenance.
[0087] The method developed here provides a different solution which is capable to
rotate multiple dual axes solar trackers with two drive motors connecting to two
independent mechanical power transmissions of the two axes.
[0088] Firstly, every solar tracker composes of:
(1) An Elevational Crossed Dual Axes Pivot Arm (ECDAPA) (#6 in Figure 10 (a))
(2) A post (#5 in Figure 10 (a)) supporting the ECDAPA.
(3) A drive shaft/ Drive Beam of the first axis (#7 in Figure 10 (a)) connecting all
the consecutive trackers for mechanical power transmission of the first axis.
[0089] While the Drive Beam of the first axis (#7) is rotating, the Drive Beam of the
second axis is being linearly pulled independently thanks to a mechanism eliminating
twisting motions created by the rotation of the first axis, enabling the mechanical
power transmission of the second axis connecting multiple trackers. The mechanism
is called the Twisting Moment Elimination Mechanism (TMEM) and the method
eliminating the twisting moments is called Twisting Moment Elimination Solution
(TMES). In addition, the Tensional Transmission Element of Ropes (#9) is not necessary
to be compressional or bendable. It is developed for tensional forces.
[0090]TMEM is a bar, a drive shaft, a twistable rope or a twistable flexible drive shaft
(#1), of which there are two universal joints (#2) at its two ends as required. In case of
a twistable rope, which is able to twist about at least 360 degrees between two ends,
the two universal joints might not be required. In addition, TMEM must be capable to
tensional force. The Tensional Transmission Element of Ropes is made of ropes or
cables.
[0091] Rotations of the drive shaft/ Drive Beam (#7) of the first axis being transferred
to the Tilting Structure (#6 and #8) are eliminated by and at the TMEM (#1 and #2).
Thus, motions of the Drive Beams of the second axis, by pulling #3 and #4 sequentially
through multiple trackers, are independent with that of the first axis.
[0092] Both the mechanical power transmissions of the two axes are able to transfer,
independently, power from its drive motors to rotate the respected axes of multiple
trackers.
[0093] The pulling direction #3 makes the Drive Beam of the second axis to rotate
clockwise whereas the pulling direction #4 makes it to rotate anticlockwise.
[0094] The TLRTS By DR might also integrate the Method of Bending Moments
Eliminated for Symmetric Pulls of the TLRTS By DR (MBME4SP).
[0095] The Twisting Linear-to-Rotational Transmission System by Drive Ropes (TLRTS
By DR) is applied for not only the second axis but also the first axis of single or dual
axes solartracking systems. The TLRTS BY DR is beneficial to integrate with Elevational
Crossed Dual Axes Pivot Arm for Elevational Crossed Dual Axes of solar tracking
systems. Furthermore, the TLRTS BY DR is especially beneficial to floating solar
tracking systems.
1.15 The Method of Bending Moments Eliminated for Symmetric Pulls of the TLRTS By DR
(MBME4SP) (Figure 10 (b))
[0096] This solution is developed to enhance the Twisting Linear-to-Rotational
Transmission System by Drive Ropes (TLRTS By DR) thanks to eliminating bending
effects on posts caused by horizontal pulling forces. It composes of two Twisting
Linear-to-Rotational Transmission System by Drive Ropes (TLRTS By DR)s which are
combined and arranged symmetrically as presented in Figure 10 (b) and described
below.
[0097] When a horizontal pulling force (such as #3 in the left of Figure 10 (b)) rotates
the solar array clockwise by pulling to the left, the posts of the solar array are being
bended accordingly. In order to eliminate the bending effects, a symmetric
mechanism pulling to the right (#3 in the right of Figure 10 (b)) is added. The two
horizontal opposite pulling forces of #3, when working together, pulling to both the
left and the right, as presented in Figure 10 (b), make the second axis rotating
clockwise while eliminating bending of the posts. Similarly, the rotation of
anticlockwise is handled by the two opposite forces of #4, as presented in Figure 10
(b)), pulling to both the left and the right.
[0098] The Method of Bending Moments Eliminated for Symmetric Pulls of the TLRTS
By DR is beneficial forfloating dual axes solartracking systems, of which, anti-capsizing
on the surface of water is considered. In addition, the solution might also be applied
forgrounding solartracking systems which need to reduce bending moments of posts/
columns.
1.16 The Twisting Rotational-to-Rotational Transmission System by Drive Ropes (TRRTS
By DR) (Figure 11)
[0099] The TRRTS By DR is applied for both floating and grounding energy systems,
including (floating or grounding) solar tracking systems and wave energy systems. The
word "rope" here implies both "rope" and "cable".
[0100]The TRRTS By DR is based on a Set of a pair of pulleys (#1 and #2) and a Drive
Rope (#3) presented in Figure 11 (a). The Set is called the Unit Set. Mechanical power
from the first pulley (#1) is transmitted to the second pulley (#2) through the Drive
Rope (#3) of the Unit Set. Diameters of the two pulleys of the Unit Set may need to be
equal if angles of rotations of the two pulleys are required to be the same.
[0101] The TRRTS By DR is composed of several Unit Sets (Figure 11 (b)). Drive Ropes
of these Unit Set can be separate for every pair of pulleys or continuous on all pairs of
pulleys. A number of Transmitting Enclosed Revolution Roller Guides (TERRGs) should
be integrated for guiding these Drive Ropes. In addition, if the Method of Automatic
Rope Retracting Mechanism (MARRM) is included, the TRRTS By DR also comprises
related components of the MARRM as well. In addition, the TRRTS By DR might also
integrate the Method of Bending Moments Eliminated for Symmetric Drives of the
TRRTS By DR (MBME4SD).
[0102]When pulleys of a pair are not in the same plane (their plane vectors are not in
the same directions), the transmission is called "twisting". It reflects that the two
pulleys of the pair, and the Drive Rope of the pair are being twisted as presented in
Figure 11 (a).
[0103] This system is developed for transmitting mechanical power from the first
pulley to a number of pulleys, while:
(1) All these pulleys might and might not be in the same plane. In other words,
rotational axes of these pulleys might and might not be parallel. These
rotational axes are being twisted.
(2) The angles between plane vectors of every two consecutive pulleys are less
than 180 degrees. For practical applications, less than 90 degrees is enough for
requirements of wave energy systems or solar tracking systems.
(3) Centres of these pulleys can be fluctuated or oscillated.
(4) These pulleys might be floating independently or grounding. However,
distances between two centres of every pair of pulleys (of a Unit Set) is
unchanged overtime.
[0104] Figure 11 (a) presents that the pair of pulleys, the pulley (#1) and the pulley
(#2), are not in the same plane. In other words, the upper line and the lower line of
the Drive Rope (#3) are twisting. It is clear that the first pulley can still transmit
mechanical power to the second pulley while their Drive Rope is being twisted.
[0105] Thus, the TRRTS By DR is able to be applied in the following cases:
(1) For floating transmission systems such as applications for floating solar
tracking system or wave energy systems, where the plane vectors of pulleys
vary over time and the centres of these pulleys are fluctuated or oscillated. No
matter how waves displace the pair of pulleys (the two consecutive pulleys), as
the distance between the pair of pulleys is unchanged, mechanical power
transmissions between the two pulleys are still maintained. Particularly, the
angles of rotations of the pair of pulleys are also maintained if both pulleys
have the same diameters. This technical feature is significant for floating solar
tracking systems: solar panels attached on the torsional beams (#6) of all pairs
of pulleys (of the transmission systems) have the same angles of rotations
which are required for facing to the sun. Thus, the TRRTS By DR is significantly
beneficial for floating energy systems as listed below:
(a) Maintaining/ establishing rotations of solar panels independently from
motions of waves (for floating energy systems) and complex terrains (for
grounding energy systems) and
(b) The transmission is considerable to be less in losing transmitting
mechanical power in comparison with Rotational Drive Shafts and
universal joints integrated: When passing joints or pulleys which are not in the same strait line the transmission efficiency of the TRRTS By DR is maintained superiorly. It means, for floating solar tracking systems, because of motions of waves, Rotational Drive Shafts using universal joints can rotate quite a limited quantity of solar panels in comparison with that of the TRRTS By DR due to their transmission efficiencies.
(2) For grounding solar tracking systems on complex terrains, the benefits are still
the same.
[0106] In addition, The TRRTS By DR can be used to be the second axis of the dual
axes solartracking systems (Figure 11 (b)) as follows:
(1) The First Active Pulley (#1) is connected to the First Drive Motor (#7).
(2) The Pulleys numbered from 2 to (N+1) belong to the Second Rotational Axis of
the N solar trackers.
(3) The First Rotational Axis connects through the above N solar trackers via drive
shafts (#5) with universal joints integrated. These N solar trackers can be
rotated according to the First Rotational Axis.
(4) While the First Rotational Axis (#5) is rotating, the Drive Rope (#3) between the
First Active Pulley (#1) and all the remaining Pulleys (#2 and #4) are being
twisted consequently. At the same time, the First Drive Motor (#7) of the
Second Rotational Axis rotates the First Active Pulley (#1). Then the First Active
Pulley pull the Twisted Drive Rope (#3) and then transmit mechanical power
to all the Pulleys numbered from 2 to (N+1). Thus, the TRRTS By DR can be used
for the Second Rotational Axis of a dual axes solar tracking system. Both the
First Rotational Axis and the Second Rotational Axis can rotate the trackers of
solar panels at the same time independently thanks to the capability of the
TRRTS By DR with Twisting Drive Ropes and Twisting Pulleys.
(5) The First Rotational Axis is not required to be strait. In otherwords, the centres
of pulleys are either statically or dynamically fluctuated. The TRRTS By DR is
capable to work with all such cases.
[0107] The TRRTS By DR can also be used for:
(1) single axis solar tracking systems, and
(2) floating solar tracking systems with either single axis or dual axes.
[0108] In addition to using tensioners for keeping the Drive Ropes always tensioned,
The Method of Automatic Rope Retracting Mechanism (MARRM) can be applied. It
also helps to keep the Drive Ropes tensioned at all times.
1.17 The Method of Bending Moments Eliminated for Symmetric Drives of the TRRTS By
DR (MBME4SD) (Figure 12)
[0109] The MBME4SD is developed to enhance the Twisting Rotational-to-Rotational
Transmission System by Drive Ropes (TRRTS By DR). It is applied for both floating and
grounding energy systems, including (floating orgrounding) solar tracking systems and
wave energy systems. It composes of two Twisting Rotational-to-Rotational
Transmission System by Drive Ropes (TRRTS By DR)s which are combined and arranged
symmetrically as presented in Figure 12 and described below.
[0110] Given a TRRTS By DR as presented in Figure 12. If there is only one Drive Pulley
(#7) (powered by a Drive Motor) at one end of the TRRTS By DR, the Drive Pulley pulls
all the Pulleys of the transmission system with Lower Pulling Forces (#15), including
tops of the (floating) posts where the Pulleys are secured to. The Lower Pulling Forces
cause:
(1) Bending moments in the (floating) posts, and
(2) Capsizing the (floating) posts, and
(3) Pulling all structure of the system to one side which is the side of the Drive
Pulley (#7), and
(4) Causing the supporting structure of the Drive Pulley (#7) and the structure of
the whole system, including anchoring/ mooring systems as well as structures
of the Pulleys/ Bearings, required to be strengthened and anchored further.
[0111] The developed Method of Symmetric Drives (MBME4SD) is to add a secondary
Drive Pulley (#11) powered by a second Drive Motor. The Second Drive Pulley, which
is symmetric with the First Drive Pulley, creates the Upper Pulling Forces (#14). As a
result, all matters caused by the First Drive Pulley are eliminated by the Second Drive
Pulley, leading to saving costs for structures and improving structural stability of
energy systems, particularly floating energy systems.
1.18 The Twisting Oscillated Mechanical Power Transmission System (TOMPTS)
[0112] The TOMPTS is applied for transmitting mechanical power in energy systems.
The word "rope" here also implies cable, chain, belt or any flexible means capable to
bear tensional forces.
[0113] Mechanical power transmission used for distributed oscillated systems such as
floating energy systems must cope with distributed oscillated motions caused by
waves which makes the whole transmission systems oscillated while it is rotating.
Thus, shapes of the transmission systems might vary over time while their
transmission efficiencies are concerned as the shapes of the transmission systems are
fluctuated. In lieu of using popular Rotational Drive Shafts integrated with universal
joints, the TOMPTS is developed and applied for not only coping with waves but also
improving transmission efficiencies.
[0114] The MOMPTS, which uses ropes as drive ropes (called Drive Ropes), developed
for energy systems, particularly floating energy systems and wave energy systems, is
based on a set of a Drive Rope (or sections of Drive Ropes) connecting a pair of
consecutive pulleys(#1and#2 in Figure 11 (a)and (b)), or Rotating Arms (#10 in Figure
10 (b)), for both types of linearto rotational and rotational to rotational transmissions.
Thus, the TOMPTS comprises the following:
(1) The Twisting Linear-to-Rotational Transmission System by Drive Ropes (TLRTS
By DR), and
(2) The Twisting Rotational-to-Rotational Transmission System by Drive Ropes
(TRRTS By DR)
(3) The Method of Bending Moments Eliminated for Symmetric Pulls of the TLRTS
By DR (MBME4SP), and
(4) The Method of Bending Moments Eliminated for Symmetric Drives of the
TRRTS By DR (MBME4SD).
[0115] Technical features and advantages of the TOMPTS are:
(1) Light.
(2) Flexible to cope with motions of waves. Flexible to transmit mechanical power
in variable directions of transmissions fluctuated by waves.
(3) Capable to long distance mechanical power transmissions. Thus, it is beneficial
for coping with high waves offshores, either for vertical transmissions or
elevational transmissions.
(4) Able to convert mechanical power from bidirectional linear to rotational
motions. Thus, Drive Ropes are applied for both (floating) solar tracking
systems and transmitting harvested wave energy to electric generators.
(5) Able to maintain angle of rotation of the two equal sized consecutive pulleys
(or Rotating Arms) even when these pulleys (or Rotating Arms) displaced
differently by waves. This feature is beneficial for floating solar tracking
systems in maintaining separate trackers of solar panels facing to the sun at all
times in spite of different motions caused by waves.
(6) Motions of waves do not decrease transmission efficiency as it is independent
with displacements of pulleys.
[0116] The main TOMPTS's technical feature is to transfer mechanical power while
accepting its drive ropes being twisted in different directions by rotations, especially
with motions caused bywaves. Example of motions that make drive ropes twisted are:
(1) Dual axes solartracking systems: the TOMPTS forthe second axis with its drive
ropes twisted by motions of the first axis.
(2) Transmission systems on the surface of water: the TOMPTS is transmitting
mechanical power while components are oscillated, causing its drive ropes
being twisted by waves.
1.19 The Bidirectional Linear to Rotational Transmission System by Gear Racks (BLRTS by
GR) (Figure 13):
[0117] The BLRTS by GR is developed for wave energy systems. It transmits mechanical
energy from waves to electric generators. There are two versions of the BLRTS by GR:
The BLRTS by GR with Fixing Generators and The BLRTS by GR with Sliding Generators.
[0118] The BLRTS by GR with Fixing Generators (Figure 13 (a))
[0119] Components of the BLRTS by Gear Racks with Fixing Generators:
(1) A pair of One-way Pinion Gears (#2 and #3), which are both released in the
same anticlockwise direction, and both engaged in the clockwise direction,
secured to a Rotational Drive Shaft (#4) which is connecting to a rotor of an
electric generator.
(2) A pair of Gear Racks (#5 and #6) secured along a Linear Motion Drive Shaft (#8),
which is also called "Gear Rack Holder" as it holds Gear Racks. The pair of Gear
Racks and the pair of One-way Pinion Gears can be any type which have the
same functions.
(3) A Linear Motion Drive Shaft (Gear Rack Holder) secured onto a (Vertically)
Slidable Float (#1)
[0120] Operations of the BLRTS by Gear Racks with Fixing Generators:
(1) When the (Vertically) Slidable Float (#1) moves upwards, it pushes the pair of
Gear Racks up accordingly. The First Gear Rack (#5) rotates the First One-way
Pinion Gear (#2) clockwise. As the First One-way Pinion Gear (#2) is currently
engaged, it makes the Rotational Drive Shaft (#4) rotating clockwise
accordingly. At the same time, although the Second Gear Rack (#6) rotates the
Second One-way Pinion Gear (#3) anticlockwise, as the Second One-way Pinion
Gear (#3) is currently released from moving anticlockwise, it is not engaged to
the current clockwise rotation of the Rotational Drive Shaft (#4).
(2) When the (Vertically) Slidable Float (#1) moves downwards, it pushes the pair
of Gear Racks down accordingly. The Second Gear Rack (#6) rotates the Second
One-way Pinion Gear (#3) clockwise. As the Second One-way Pinion Gear (#3)
is currently engaged, it makes the Rotational Drive Shaft (#4) rotating clockwise
accordingly. At the same time, although the First Gear Rack (#5) rotates the
First One-way Pinion Gear (#2) anticlockwise, as the First One-way Pinion Gear
(#2) is currently released from moving anticlockwise, it is not engaged to the
current clockwise rotation of the Rotational Drive Shaft (#4).
(3) Thus, the bidirectional linear motions of the (Vertically) Slidable Float make the
Rotational Drive Shaft (#4) to rotate clockwise at all times.
[0121] The BLRTS by GR with Sliding Generators (Figure 13 (b) and Figure 13 (c))
[0122] The BLRTS by GR with Sliding Generators is the same with the BLRTS by GR with
Fixing Generator except the followings:
[0123] The pair of Gear Racks ((#5) and (#6)) are secured to a Floating Post or a
Surrounding Prestressed Floating Post (SPFP) instead of securing to a (Vertically)
Slidable Float (#1).
[0124]The (electric) Generator(#7), andthe pairof One-way Pinion Gears (#2 and #3)
are secured to the (Vertically) Slidable Float (#1) instead of the Floating Post. Thus, the
Generator slides along the Floating Post whereas the Gear Racks are fixed, making the
pair of One-way Pinion Gears (#2 and #3) rotating accordingly when the (Vertically)
Slidable Float slides upwards or downwards.
[0125] Figure 13 (b) presents an arrangement of electric generators and sliding guides
around a Surrounding Prestressed Floating Post (SPFP) as follows: four Sliding
Unclosed Revolution Roller Guides (SURRG)s (#14), and 4 pairs of One-way Pinion
Gears ((#2) and (#3)), and four electric generator (#7) are integrated. The Central
Structural Rail Tubes/ Beams (Central SRTB) (#11) is positioned in the centre of the
Floating Post or the Surrounding Prestressed Floating Post (SPFP). The Central SRTB is
anchored/ moored to submerged damper(s) or ground via a (Vertical) Stationed
Ropes/ Cables (#10). The Stationed Float (#12), which is secured to the bottom of the
Central SRTB, ensures the whole structure floating.
[0126] Operations of both versions of the BLRTS by GR with Fixing and Sliding
Generators are principally the same.
1.20 The Bidirectional Linear to Rotational Transmission System by Drive Ropes Circled
(BLRTS By DR Circled) (Figure 14)
[0127] The BLRTS By DR Circled is applied for wave energy systems. It uses two
separate Circular Drive Ropes. The word "Circled" implies that the two Drive Ropes
are circular. This type of Drive Rope is call "Attachment Drive Rope" as it is attached
to a short component called "Linear Motion Drive Shaft" (#8), which is also called
"Attachment Clamp Holder" as it holds Attachment Clamps.
[0128] Stators of electric generators are secured to Stationed Group supported by
Stationed Floats whereas rotors are connected to the BLRTS By DR Circled. In addition,
Figure 14 (b) presents an arrangement of Drive Ropes applicable to the BLRTS By DR
Circled with both sides to be aligned vertically at all times.
[0129] Components of the BLRTS by DR Circled:
(1) A pair of One-way Pulleys (#11 and #12), which are both released in the same
anticlockwise direction and both engaged in the clockwise direction, secured
to a Rotational Drive Shaft (#4) connecting to a rotor of an electric generator.
(2) A pair of Free Pulleys (#9 and #10).
(3) A pair of (Circular) Drive Ropes:
(a). The First Drive Rope (comprising #13 in the left side and #15 in the right
side) rolls the First One-way Pulley (#11) and the First Free Pulley (#9).
The left side (#13) of the First Drive Rope is called the First Active Rope
Section (the load line). The right side (#15) of the First Drive Rope is
called the First Passive Rope Section (the fall line). The First Active Rope
Section is secured to the left side of the Linear Motion Drive Shaft (#8)
via the first Attachment Clamp (#20). Two ends of the First Drive Rope
(at the tops #13 and #15) can be secured to the First One-way Pulley at
the same point or two separate points. The First Drive Rope also has a
reserved length of rope, which is at least equal to the linear Travel
Range, circling the First One-way Pulley for the Travel Range of the
Linear Motion Drive Shaft (#8).
(b).The Second Drive Rope (comprising #16 in the left side and #14 in the
right side) rolls the Second One-way Pulley (#12) and the Second Free
Pulley (#10). The left side (#16) of the Second Drive Rope is called the
Second Passive Rope Section. The right side (#14) of the Second Drive
Rope is called the Second Active Rope Section. The Second Active Rope
Section is secured to the right side of the Linear Motion Drive Shaft (#8)
via the second Attachment Clamp (#21). Two ends of the Second Drive
Rope (at the tops #14 and #16) can be secured to the Second One-way
Pulley at the same point or two separate points. The Second Drive Rope
also has a reserved length of rope, which is at least equal to the linear
Travel Range, circling the Second One-way Pulley for the Travel Range
of the Linear Motion Drive Shaft (#8).
(4) A Pair of Attachment Clamps (#20 & #21) to attach the Active Sections (#13
& #14) to the Linear Motion Drive Shaft (#8).
(5) If the Method of Automatic Rope Retracting Mechanism (MARRM) is applied,
a Rope Retracting One-way Pulley (RROP), which is the Child One-way Pulley
of the First One-way Pulley (#11), is included. The Child One-way Pulley is
engaged to the Pulley (#11) for anticlockwise rotations and released in the
other rotational direction. In this case, top of the First Active Section (#13) of
the First Drive Rope is secured to the Rope Retracting One-way Pulley (RROP)
while top of the First Passive Section (#15) is secured to the First One-way
Pulley. It is similar for the Second Drive Rope.
(6) A Linear Motion Drive Shaft (Attachment Clamp Holder) (#8) secured onto a
(Vertically) Slidable Float
(7) A number of tensioner guides.
(8) The Method of Vertical Alignment Control for Attachment Drive Ropes
(MVACADR) can be integrated in order to keep the Attachment Clamps (#20 &
#21) aligned with the Active Sections (#13 & #14) at all times.
[0130] Operations of the BLRTS by DR Circled:
(1) When the (Vertically) Slidable Float moves upwards, it pulls the First and the
Second Active Rope Sections up accordingly. The upward motions of the First
Active Rope Section (#13) rotate the First One-way Pulley (#11) clockwise. As
the First One-way Pulley (#11) is currently engaged, it makes the Rotational
Drive Shaft (#4) rotating clockwise accordingly. At the same time, although the
upward motions of the Second Active Rope Section (#14) rotate the Second
One-way Pulley (#12) anticlockwise, as the Second One-way Pulley (#12) is
currently released from moving anticlockwise, it is not engaged to the current
clockwise rotation of the Rotational Drive Shaft (#4).
(2) When the (Vertically) Slidable Float moves downwards, it pulls the First and
the Second Active Rope Sections down accordingly. The Second Active Rope
Section (#14) rotates the Second One-way Pulley (#12) clockwise. As the
Second One-way Pulley (#12) is currently engaged, it makes the Rotational
Drive Shaft (#4) rotating clockwise accordingly. At the same time, although the
First Active Rope Section (#13) rotates the First One-way Pulley (#11)
anticlockwise, as the First One-way Pulley (#11) is currently released from
moving anticlockwise, it is not engaged to the current clockwise rotation of the
Rotational Drive Shaft (#4).
(3) Thus, the bidirectional linear motions of the (Vertically) Slidable Float make the
Rotational Drive Shaft (#4) to rotate clockwise at all times.
(4) If the Method of Automatic Rope Retracting Mechanism (MARRM) is applied
in lieu of using tensioners, when the Rope Retracting One-way Pulley (RROP) is
activated, it rolls the First or Second Drive Ropes, making the Drive Ropes to
be always tensioned (as it is rolled to be shorter).
1.21 The Bidirectional Linear to Rotational Transmission System by Drive Ropes
Combined (BLRTS By DR Combined) (Figure 15)
[0131] The BLRTS By DR Combined is applied forwave energy systems. Instead of using
two separate circular Drive Ropes for two directions of bidirectional linear motions, it
uses a single combined Drive Rope. The combined Drive Rope has all functions
combined from two separate circular Drive Ropes. The word "Combined" implies that
two circular Drive Ropes are combined to be a single Drive Rope.
[0132] Stators of electric generators are secured to Stationed Group supported by
Stationed Floats whereas rotors are connected to the BLRTS By DR Combined.
[0133] Components of the BLRTS by DR Combined:
(1) A pair of One-way Pulleys (#11 and #12), which are both released in the same
anticlockwise direction and both engaged in the other clockwise direction,
secured to a Rotational Drive Shaft (#4) connecting to a rotor of an electric
generator.
(2) A pair of Free Pulleys (#9 and #10).
(3) A combined Drive Rope: The combined Drive Rope rolls the two One-way
Pulley (#11 and #12) and the two Free Pulley (#9 and #10). All Pulleys are
circled with reserved length of rope, which is at least equal to the Travel Range
of linear motions. The combined Drive Rope has four Sections (#18, #19, #22,
#23). The Section of Rope (#19) is called the Active Rope Section (#19).
(4) The Pulley (#10) has:
(a) Two Rope Securing Clamps (#25). The first Clamp secures the first end
of the combined Drive Rope to the Pulley (#10). The Second Clamp
secures the second end of the combined Drive Rope to the Rope
Retracting One-way Pulley (RROP) (#24), and
(b) A Rope Retracting One-way Pulley (RROP) (#24, if the Method of
Automatic Rope Retracting Mechanism (MARRM) is applied. The RROP
is the Child One-way Pulley of the Pulley (#10). The Child One-way
Pulley is engaged to the Pulley (#10) for anticlockwise rotations and
released for clockwise rotations.
(5) An Attachment Clamp (#21) to attach the Section (#19) to the Linear Motion
Drive Shaft (#8) which is also called "Attachment Clamp Holder" as it holds
Attachment Clamps.
(6) A Linear Motion Drive Shaft (#8) secured onto a (Vertically) Slidable Float.
(7) A number of tensioner guides.
(8) The Method of Vertical Alignment Control for Attachment Drive Ropes
(MVACADR) can be integrated in order to keep the Attachment Clamp (#21)
aligned with the Section (#19) at all times.
[0134] Operations of the BLRTS by DR Combined:
(1) When the (Vertically) Slidable Float moves upwards, it pulls the Active Rope
Section (#19) upwards accordingly. The upward motions of the Active Rope
Section (#19) pull the Section (#18) downwards. Then the Section (#18) rotate
the First One-way Pulley (#11) clockwise. As the First One-way Pulley (#11) is
currently engaged, it makes the Rotational Drive Shaft (#4) rotating clockwise
accordingly. At the same time, although the upward motions of the Active
Rope Section (#19) also rotate the Second One-way Pulley (#12) anticlockwise,
as the Second One-way Pulley (#12) is currently released from moving
anticlockwise, it is not engaged to the current clockwise rotation of the
Rotational Drive Shaft (#4).
(2) When the (Vertically) Slidable Float moves downwards, it pulls the Active Rope
Section (#19) downwards accordingly. The downward motions of the Active
Rope Section (#19) rotate the Second One-way Pulley (#12) clockwise. As the
Second One-way Pulley (#12) is currently engaged, it makes the Rotational
Drive Shaft (#4) rotating clockwise accordingly. At the same time, the
downward motions of the Active Rope Section (#19) pull the Section (#23)
downwards and rotates the Pulley (#10) clockwise. The Pulley (#10) then pulls
the Section (#22) upwards and rotates the First One-way Pulley (#11)
anticlockwise. As the First One-way Pulley (#11) is currently released from
moving anticlockwise, it is not engaged to the current clockwise rotation of the
Rotational Drive Shaft (#4).
(3) Thus, the bidirectional linear motions of the (Vertically) Slidable Float make the
Rotational Drive Shaft (#4) to rotate clockwise at all times.
(4) If the Method of Automatic Rope Retracting Mechanism (MARRM) is applied
in lieu of using roller tensioners, the combined Drive Rope is always tensioned.
1.22 The Bidirectional Linear to Rotational Transmission System by Drive Ropes Aligned
(BLRTS By DR Aligned) (Figure 16)
[0135] The BLRTS By DR Aligned is applied for wave energy systems. It uses two
separate vertical Aligned Drive Ropes. This type of Drive Rope is aligned vertically
during upward and downward motions of (Vertically) Slidable Floats.
[0136] The word "Aligned" implies that all sections of the Drive Ropes are always
aligned in expected arrangements of directions and connections at all times of
operations.
[0137] Both rotors and stators of electric generators are not stationed with the BLRTS
By DR Aligned. Stators and rotors slide linearly in both upward and downward
directions as the stators are fixed to Vertical Sliding Floating Structure (VSFS)s which
bear (Vertically) Slidable Floats. Rotations of rotors are created by pulling forces of the
two Aligned Drive Ropes for both upward and downward linear motions.
[0138] Components of the BLRTS by DR Aligned (Figure 16 (a)):
(1) A pair of One-way Pulleys (#26 and #27), which are both released in the same
anticlockwise direction and both engaged in the clockwise direction, secured
to a Rotational Drive Shaft (#4) connecting to a rotor of an electric generator.
(2) A pair of Aligned Drive Ropes:
(a) The First Aligned Drive Rope (comprisingthe Upper Section #28 and the
Lower Section #29) rolls the First One-way Pulley (#26). The top end of
the Upper Section (#28) and bottom end of the Lower Section (#29) are
secured to the top (#32) and the bottom (#33) of a (vertical) Floating
Post which belong to the Stationed Floating Structure of the energy
system.
(b) The Second Aligned Drive Rope (comprising the Upper Section #30 and
the Lower Section #31) rolls the Second One-way Pulley (#27). The top
end of the Upper Section (#30) and the bottom end of the Lower
Section (#31) are secured to the top (#32) and the bottom (#33) of the
(vertical) Floating Post as well.
(3) A Rotational Drive Shaft (#4) and a generator (#7) are secured to the (Vertically)
Slidable Float (#1). The (Vertically) Slidable Float is sliding along the (vertical)
Floating Post of the Stationed Floating Structure.
(4) The Drive Rope Partition (#36), which is an option of One-way Pulleys, is used
to separate the Upper Section and Lower Section of the Aligned Drive Ropes.
(5) A number of tensioner guides.
(6) If The Method of Automatic Rope Retracting Mechanism (MARRM) is applied
(option): a pair of Rope Retracting One-way Pulley (RROP)s (#37 and #38) are
added. Axes of these RROP are secured to the top of the (vertical) Floating Post
(belonged to Stationed Floating Structure). A pair of Hanging Masses (#39 and
#40) are also added. In this case, the two top ends of the two Aligned Drive
Ropesare secured tothetwo Rope Retracting One-way Pulleysthen connected
to the two Hanging Masses. The First Rope Retracting One-way Pulley (#37) is
engaged (locked) to the main structure in the clockwise direction and released
in the other direction. The Second Rope Retracting One-way Pulley (#38) is
engaged (locked) to the main structure in the anticlockwise direction and
released in the other direction. The pair of Hanging Masses (#39 and #40) can
be replaced with any other means having the same function for retracting the
ropes such as controlled drive motors or Rope Retracting Flywheel (RRF)s
(#41).
[0139] Operations of the BLRTS by DR Aligned:
(1) When the (Vertically) Slidable Float, including components secured on it such
as the two One-way Pulleys and the electric generator, moves upwards, the
Lower Section (#29) rotates the First One-way Pulley (#26) clockwise. As the
First One-way Pulley (#26) is engaged with the Rotational Drive Shaft (#4) for
clockwise rotations, the First One-way Pulley rotates the rotor of the electric
generator clockwise. At the same time, the Lower Section (#31) rotates the
Second One-way Pulley (#27) anticlockwise. As the Second One-way Pulley
(#27) is currently released from moving anticlockwise, it is not engaged to the
current clockwise rotation of the Rotational Drive Shaft (#4).
(2) When the (Vertically) Slidable Float moves downwards, the Upper Section
(#30) rotates the Second One-way Pulley (#27) clockwise. As the Second One
way Pulley (#27) is engaged with the Rotational Drive Shaft (#4) for clockwise
rotations, the Second One-way Pulley rotates the rotor of the electric
generator clockwise. At the same time, the Upper Section (#28) rotates the
First One-way Pulley (#26) anticlockwise. As the First One-way Pulley (#26) is
currently released from moving anticlockwise, it is not engaged to the current
clockwise rotation of the Rotational Drive Shaft (#4).
(3) Thus, the bidirectional linear motions of the (Vertically) Slidable Float make the
Rotational Drive Shaft (#4) to rotate clockwise at all times.
(4) If The Method of Automatic Rope Retracting Mechanism (MARRM) is applied
(option): Whenever the Section (#28) of the First Aligned Drive Rope is loose,
the First Hanging Mass (#39) pulls the One-way Pulley (#37) anticlockwise (the
anticlockwise direction is not engaged), making the Section (#28) to retract.
Similarly, whenever the Section (#30) of the Second Aligned Drive Rope is
loose, the Second Hanging Mass (#40) pulls the One-way Pulley (#38) clockwise
(the clockwise direction is not engaged), making the Section (#30) to retract.
The MARRM is convenient for installation and maintenance. It helps to keep
the First and the Second Aligned Drive Ropes always tensioned. In addition, the
MARRM can be applied with controlled drive motors or Rope Retracting
Flywheel (#41) instead of using Hanging Masses (#39 and #40). Figure 16 (b)
presents the MARRM with Rope Retracting Flywheel (#41) applied for the
BLRTS By DR Aligned:
(a) The pair of Rope Retracting One-way Pulley (RROP)s (#37 and #38) are
excluded.
(b) The pair of Hanging Masses (#39 and #40) are also excluded.
(c) The pair of Aligned Drive Ropes: all four ends of the pair of Aligned Drive
Ropes are secured to the (vertical) Floating Post.
(d) The pair of Rope Retracting Flywheel (RRF)s (#41) are added.
(e) Operations of the BLRTS By DR Aligned with the pair of Rope Retracting
Flywheel (RRF)s (#41) are similar to that of the BLRTS By DR Aligned
with Hanging Masses (#39 and #40), except features related to RRFs are described in the Method of Automatic Rope Retracting Mechanism
(MARRM) with RRFs.
1.23 The Bidirectional Linear to Rotational Transmission System by Drive Chains/ Belts
(BLRTS By DC) (Figure 17)
[0140] The mechanisms and operations of the BLRTS by Drive Chains and the BLRTS by
Belts are the same. Thus, there is only the BLRTS by Drive Chains is described below.
[0141] Stators of electric generators are secured to Stationed Group supported by
Stationed Floats whereas rotors are connected to the BLRTS By Drive Chains.
[0142] Components of the BLRTS by Drive Chains:
(1) A pair of One-way Gears (#11 and #12), which are both released in the same
anticlockwise direction and both engaged in the other clockwise direction,
secured to a Rotational Drive Shaft (#4) connecting to a rotor of an electric
generator.
(2) A pair of Free Gears (#9 and #10).
(3) A pair of Drive Chains:
The First Drive Chain (comprising the left side #17 of the Drive Chain) rolls the
First One-way Gear (#11) and the First Free Gear (#9). The left side (#17) of the
First Drive Chain is called the First Active Chain Section. The right side of the
First Drive Chain is called the First Passive Chain Section. The First Active Chain
Section is secured to the left side of the Linear Motion Drive Shaft (#8), which
is also called "Attachment Clamp Holder" as it holds Attachment Clamps, via
the first Attachment Clamp (#20).
The Second Drive Chain (comprising the right side #18 of the Drive Chain) rolls
the Second One-way Gear (#12) and the Second Free Gear (#10). The left side
of the Second Drive Chain is called the Second Passive Chain Section. The right
side (#18) of the Second Drive Chain is called the Second Active Chain Section.
The Second Active Chain Section is secured to the right side of the Linear
Motion Drive Shaft (#8) via the second Attachment Clamp (#21).
(4) A pair of Attachment Clamps (#20 & #21) to attach the Section (#17 & #18) to
the Linear Motion Drive Shaft (#8).
(5) A Linear Motion Drive Shaft (#8) secured onto a (Vertically) Slidable Float
(6) A number of tensioner guides.
[0143] Operations of the BLRTS by Drive Chains:
(1) When the (Vertically) Slidable Float moves upwards, it pulls the First and the
Second Active Chain Sections up accordingly. The upward motions of First
Active Chain Section (#17) rotate the First One-way Gear (#11) clockwise. As
the First One-way Gear (#11) is currently engaged, it makes the Rotational
Drive Shaft (#4) rotating clockwise accordingly. At the same time, although the
upward motions of the Second Active Chain Section (#18) rotate the Second
One-way Gear (#12) anticlockwise, as the Second One-way Gear (#12) is
currently released from moving anticlockwise, it is not engaged to the current
clockwise rotation of the Rotational Drive Shaft (#4).
(2) When the (Vertically) Slidable Float moves downwards, it pulls the First and
the Second Active Chain Sections down accordingly. The Second Active Chain
Section (#18) rotates the Second One-way Gear (#12) clockwise. As the Second
One-way Gear (#12) is currently engaged, it makes the Rotational Drive Shaft
(#4) rotating clockwise accordingly. At the same time, although the First Active
Chain Section (#17) rotates the First One-way Gear (#11) anticlockwise, as the
First One-way Gear (#11) is currently released from moving anticlockwise, it is
not engaged to the current clockwise rotation of the Rotational Drive Shaft
(#4).
[0144] Thus, the bidirectional linear motions of the (Vertically) Slidable Float make the
Rotational Drive Shaft (#4) to rotate clockwise at all times.
[0145] The BLRTS by Drive Chains/ Belts can also be arranged with sliding generators,
which are secured to (Vertically) Slidable Floats, while Drive Chains are fully fixed to
(vertical) Floating Posts to work similar to Gear Racks. In this case, The BLRTS by Drive
Chains/ Belts and the BLRTS by Gear Racks are the same.
1.24 The Method of Vertical Alignment Control for Attachment Drive Ropes (MVACADR)
(Figure 18)
[0146] The MVACADR is applied forthe Bidirectional Linearto Rotational Transmission
System (BLRTS) which is integrated in energy systems, particularly wave energy
systems.
[0147] Attachment Drive Ropes (#18) used in the BLRTS may require to be aligned
when circling around pulleys. During the process of circling around pulleys,
Attachment Drive Ropes are moving along the direction parallel with the pulleys' axes
whereas the Attachment Clamps (#21) do not move in the same pace if they are fixed
completely to the Sliding Structure (or the Vertical Sliding Floating Structure (VSFS))
which the (Vertically) Slidable Float (#1) is secured to.
[0148] The solution is to ensure the Attachment Clamps keeping pace with the
Attachment Drive Ropes of the BLRTS. In other words, the moving Attachment Drive
Ropes are kept to be strait vertically at all times.
[0149] Components of theMVACADR:
(1) A Bidirectional Engaged Pulley (#26). The Pulley (#26) has the same diameter
with the two pulleys (#12) and (#10)
(2) A Control Drive Rope (#28, Upper Section) and (#29, Lower Section) for the
Alignment Control. The Control Drive Rope and the Attachment Drive Ropes
(#18) have the same diameter.
(3) A Control Axis (#39) with a Lead Screw (#37). The length of steps of the Lead
Screw equals to the diameter of the Attachment Drive Ropes (#18).
(4) A Control Sliding Rail (#38) for the Attachment Clamps to slide.
(5) A pair of Attachment Drive Ropes and a pair of Attachment Clamps secured to
the Attachment Drive Ropes.
(6) Although the MVACADR can work with a pair of Attachment Drive Ropes,
Figure 18 is presented with an Attachment Drive Rope instead of the pair.
(7) The Method of Automatic Rope Retracting Mechanism (MARRM) can be
integrated to retract Attachment Drive Ropes or Control Drive Ropes.
[0150] Operations of the MVACADR:
(1) When the (Vertically) Slidable Float (#1) slides downwards:
(a) the pulley (#12) rotates the rotor of the electric generator (#7)
(b) the Attachment Drive Rope (#18) moves closer to the electric generator.
(c) the Control Drive Rope (#29) rotate the Bidirectional Engaged Pulley (#26).
Thanks to rotations of the Lead Screw (#37), the Attachment Clamp (#21)
keeps pace with the Attachment Drive Rope (#18).
(2) When the (Vertically) Slidable Floats (#1) slides upwards, the process is the
same with its downward motion except directions of motions of the Alignment
Control are opposite and the electric generator keeps rotating clockwise at all
times.
1.25 The Bidirectional Linear to Rotational Transmission System (BLRTS)
[0151] BLRTS is applied for wave energy systems to transmit mechanical power
harvested from waves to rotational electric generators.
[0152] Due to characteristics of linear motions caused by waves, which are different
with linear motions in other fields, the need of an appropriate mechanical power
transmission for wave energy conversion is required. The characteristics of linear
motions created by waves are:
(1) Bidirectional linear motions. Upward and downward directions of motions are
shifted overtime.
(2) Magnitudes of motions (oscillations) vary over time, depending mainly on
wave highs, which might be 5m, 10m or much larger.
(3) Speeds, accelerations and frequencies of motions (oscillations) vary over time,
depending mainly on wavelengths and wave frequencies.
(4) The values of speeds, accelerations and frequencies are usually smaller
whereas magnitudes are usually larger in comparison with that of other
popular machines.
[0153] The BLRTS is developed with different types of Drive Components which are:
(1) Tensional: Drive Ropes (or Cables), Drive Chains, and Drive Belts.
(2) Tensional and compressional: Gear Racks.
[0154] The Method of BLRTS (Its components and operations are more detailed in the
Bidirectional Linear to Rotational Transmission System by Gear Racks (BLRTS by GR),
the Bidirectional Linear to Rotational Transmission System by Drive Chains/ Belts
(BLRTS By DC) and the Bidirectional Linear to Rotational Transmission System by Drive
Ropes (BLRTS By DR) which comprises the BLRTS By DR Circled and the BLRTS By DR
Combined and the BLRTS By DR Aligned) is principally described below.
[0155] Components required:
(1) Two Pair of Sections. A Pair of Sections include an Active Section (load line) and
Passive Section (fall line). Each Pair of Sections is responsible for one direction
of linear motions. The Sections can be flexible (ropes/ cables/ chains/ belts) or
non-flexible (gear racks).
(2) Two One-way Pulleys/ Gears. Once secured to Rotational Drive Shafts or rotors
of electric generators, it is engaged with one rotational direction and released
with the other rotational direction of the rotors.
(3) Two Free Pulleys/ Gears which are not required for gear racks. The Free
Pulleys/ Gears keep the flexible Drive Components (ropes/ cables/ chains,
belts) in shape. Every Active and Passive Sections of a Pair of Sections are
continuous, linking together on a Free Pulleys/ Gears.
[0156] Operations of the BLRTS:
(1) When motions of the first linear direction occur, the first Active Section pulls
(or pushes) the engaged first One-way Pulleys/ Gears, rotating the rotor in the
designed rotational direction (for example, clockwise). At the same time, the
second Active Section is rotating the second One-way Pulleys/ Gears in the
opposite rotational direction (for example, anticlockwise). As the second One
way Pulleys/ Gears is currently released from moving anticlockwise, it is not
engaged to the current clockwise rotation of the rotor. Thus, the rotor
continues to rotate clockwise.
(2) When motions of the second linear direction occur, the second Active Section
pulls (or pushes) the engaged second One-way Pulleys/ Gears, rotating the
rotor in the designed rotational direction (clockwise). At the same time, the
first Active Section is rotating the first One-way Pulleys/ Gears in the opposite
rotational direction (anticlockwise). As the first One-way Pulleys/ Gears is
currently released from moving anticlockwise, it is not engaged to the current
clockwise rotation of the rotor. Thus, the rotor also continues to rotate
clockwise.
[0157] The above two Pair of Sections can be combined together. In addition, The
above two One-way Pulleys/ Gears as well as the Two Free Pulleys/ Gears can also be
combined together in different ways of arrangements. Some of these arrangements
are classified and named to be detailed cases of the BLRTS as follows:
(1) The Bidirectional Linear to Rotational Transmission System by Gear Racks
(BLRTS by GR)
(2) The Bidirectional Linear to Rotational Transmission System by Drive Ropes
(BLRTS By DR) which further comprising the following special versions:
(a) The BLRTS By DR Circled; and
(b) The BLRTS By DR Combined; and
(c) The BLRTS By DR Aligned.
(3) The Bidirectional Linear to Rotational Transmission System by Drive Chains/
Belts (BLRTS By DC).
1.26 The Method of Automatic Rope Retracting Mechanism (MARRM) (Figure 19)
[0158] The purpose of the MARRM is to keep Drive Ropes always tensioned in lieu of
using tensioners alone. It is applied for mechanical power transmission systems or
mechanisms using ropes/ cables in energy systems such as wave energy systems, solar
energy systems orwind energy systems. The word "rope" here implies both ropes and
cables.
[0159] The MARRM for Rotational-to-Rotational Transmissions (MARRM for RRT)
(Figure 19 (a) and (b)):
[0160] Components of the MARRM for RRT:
(1) A Drive Pulley (#1).
(2) A Rope Retracting One-way Pulley (RROP) (#2). The RROP is a child pulley of
the Drive Pulley. It is engaged with the Drive Pulley in its clockwise direction
and disengaged in its anticlockwise direction.
(3) A Passive (Free) Pulley (#3).
(4) A clamp which secures the first end of the Drive Rope to the Drive Pulley (#1).
It is called the First Drive Rope Clamp (#4).
(5) A clamp which secures the second end of the Drive Rope to the Rope
Retracting One-way Pulley (RROP) (#2). It is called the Second Drive Rope
Clamp (#5).
(6) A Control Rope Clamp of the MARRM (#6). It secures the Control Rope of the
MARRM (#9) to the Rope Retracting One-way Pulley (RROP) (#2).
(7) A rope section called the First Section of the Drive Rope (#7).
(8) Another rope section called the Second Section of the Drive Rope (#8).
(9) A Control Rope of the MARRM (#9).
(10) A Hanging Mass of the MARRM (#10) or any other equivalent means such as
a controlled drive motor or a Rope Retracting Flywheel (RRF) (#11, Figure 19
(b)). The RRF is secured to the RROP (#2). If a controlled drive motor or a RRF
is integrated, the Hanging Mass and the Control Rope of the MARRM (#9) are
not included.
[0161] Operations of the MARRM for RRT:
(1) When the Drive Pulley (#1) rotates anticlockwise, as the RROP is engaged
clockwise to the Drive Pulley, it is being rotated anticlockwise (by the Drive
Pulley), pulling the Second Section of the Drive Rope (#8) upwards, making the
Second Section of the Drive Rope (#8) tensioned. Mechanical power is
transmitted (anticlockwise) from the Drive Pulley (#1) to the Passive (Free)
Pulley (#3). During this phase, the Hanging Mass (#10) is moved downwards.
The MARRM might also be activated to retract the Second Section of the Drive
Rope (#8) if it is not tensioned. If the Rope Retracting Flywheel (RRF) (#11) is integrated in lieu of the Hanging Mass (#10), once the Drive Pulley (#1) stops rotating anticlockwise, thanks to an inertial force created by the RRF, the Rope
Retracting One-way Pulley (RROP) (#2) continues to rotate. Thus, the PROP
retracts the Second Section of the Drive Rope (#8) accordingly.
(2) When the Drive Pulley (#1) is in the phase of either rotating clockwise or idling,
if the Second Section of the Drive Rope (#8) is not tensioned, the Hanging Mass
(#10) pulls the Control Rope of the MARRM (#9) downwards, rotating the Rope
Retracting One-way Pulley (RROP) (#2) anticlockwise (because the (RROP) (#2)
is not engaged to the Drive Pulley anticlockwise). Thus, the Second Section of
the Drive Rope (#8) is retracted., making the Drive Rope to be tensioned. If the
Drive Pulley (#1) is not idle (It is rotating clockwise), the Drive Pulley is also
transmitting mechanical power to the Passive (Free) Pulley (#3) as it is pulling
the First Section of the Drive Rope (#7) upwards.
(3) Thus, the Drive Pulley (#1) can transmit mechanical powerto the Passive (Free)
Pulley (#3) in both clockwise and anticlockwise rotational directions while
keeping the Drive Rope always tensioned.
[0162] In lieu of using Control Ropes and Hanging Masses, Rope Retracting Flywheel
(RRF)s can be applied. In addition, electronic control systems using controlled drive
motors instead of mechanical hanging Masses or RRFs, can also be applied.
[0163] The MARRM for Linear-to-Rotational Transmissions (MARRM for LRT) (Figure
19 (c) and (d))
[0164] The principle of the MARRM For Linear-to-Rotational and Rotational-to
Rotational Transmissions are the same. The bottom end of the First Section of the
Drive Rope (#7) and the top end of the Second Section of the Drive Rope (#8) are
secured to the main structure at (#14 and #15) whereas the Sliding Pulley Compound
(#13) slides upwards or downwards.
[0165] Components of the MARRM for LRT:
(1) A One-way Drive Pulley (#1). It is engaged with the Drive Axis (#16) in its
clockwise direction and disengaged in its anticlockwise direction.
(2) A Rope Retracting One-way Pulley (RROP) (#2). The RROP is a child pulley of
the Drive Pulley (#1). It is engaged with the Drive Pulley in its anticlockwise
direction and disengaged in its clockwise direction.
(3) A clamp which secures the top end of the First Section of the Drive Rope (#7)
to the Drive Pulley (#1) while its bottom end is secured to the main structure
at (#14). It is called the First Drive Rope Clamp.
(4) A clamp which secures the bottom end of the Second Section of the Drive
Rope (#8) to the Rope Retracting One-way Pulley (RROP) (#2) while the its top
end is secured to the main structure at (#15). It is called the Second Drive
Rope Clamp.
(5) A rope section called the First Section of the Drive Rope (#7).
(6) Another rope section called the Second Section of the Drive Rope (#8).
(7) A Rope Retracting Flywheel (RRF) (#11, Figure 19 (b)) or a controlled drive
motor. The RRF is secured to the RROP (#2).
(8) The Drive Axis (#16), and the One-way Drive Pulley (#1), and the Rope
Retracting One-way Pulley (RROP) (#2), and the Rope Retracting Flywheel
(RRF) (#11) belong to the Sliding Pulley Compound (#13).
[0166] Operations of the MARRM for LRT:
(1) Upward Motions: Figure 19 (c) presents a One-way Drive Pulley (#1) rotating
clockwise when the whole Sliding Pulley Compound (#13) slides upwards. As
the One-way Drive Pulley (#1) is engaged to the Drive Axis (#16) in its clockwise
direction, the One-way Drive Pulley (#1) rotates the Drive Axis (#16) clockwise.
When the Sliding Pulley Compound (#13) stops sliding upwards, if the Second
Section of the Drive Rope (#8) is not tensioned, the inertial force of the Rope
Retracting Flywheel (RRF) (#11) continues rotating the Rope Retracting One
way Pulley (RROP) (#2) clockwise. Thus, the Second Section of the Drive Rope
(#8) is retracted.
(2) Downward Motions: Figure 19 (d) presents a One-way Drive Pulley (#1)
rotating clockwise when the Sliding Pulley Compound (#13) slides downwards.
Similarly, As the One-way Drive Pulley (#1) is engaged to the Drive Axis (#16)
in its clockwise direction, the One-way Drive Pulley (#1) rotates the Drive Axis
(#16) clockwise. When the Sliding Pulley Compound (#13) stops sliding
downwards, if the Second Section of the Drive Rope (#8) is not tensioned, the
inertial force of the Rope Retracting Flywheel (RRF) (#11) continues rotating
the Rope Retracting One-way Pulley (RROP) (#2) clockwise. Thus, the Second
Section of the Drive Rope (#8) is retracted.
[0167] Figure 19 (c) and Figure 19 (d) present the MARRM applied for bidirectional
linear to rotational mechanical power transmission systems: The upward and
downward linear motions are handled by mechanisms illustrated in Figure 19 (c) and
Figure 19 (d).
1.27 The Method of Controlled Variable Elevation (MCVE)
[0168] The MCVE is developed to apply for floating objects, including energy systems
such as solar energy systems, wind energy systems, wave energy systems and
particularly, wave energy convertors.
[0169] In order to generate electric power, Linear Motion Drive Shafts or rotors of
electric generators must be able to move/rotate differently (called differential
motions) in comparison with stators.
[0170] In case of wave energy systems, differential motions can be created using
different types of dampers which connect to either stators or rotors. The method is
focused as follows: Movable Groups need to move upwards and downwards upon
waves whereas Stationed Groups are required limiting motions by being hold at
desired elevations thanks to using damping or anchoring/ mooring systems. As a
result, energy of the created differential motions can be converted to electricity by
using electric generators.
[0171] The MCVE applies methods for stationing Stationed Groups at Desired Variable
Elevations, which vary over time, by:
(1) using dampers, either active or passive, such as gas (air, coil) spring dampers,
Inertial Hydrodynamic Based Dampers, SHHDs or Flexible Porous Net of Wave
Absorbers/ Dampers (FPNWA/D)s, and
(2) using anchors/ moors such as mooring to ground, mooring to dampers and
mooring to other floating objects.
[0172] Desired Variable Elevations, where Stationed Groups are stationed, need to be
determined regarding to:
(1) Maximizing wave energy harvested or, equivalently, maximizing Travel Range
of (Vertically) Slidable Floats while Stationed Floats are being stationed.
(2) Floating the structure of energy systems (wind/ wave/solar), particularly the
wave energy system at Desired Variable Elevations.
[0173] The MCVE provides a method to constantly re-establish Desired Variable
Elevations regarding to elevations of tops and bottoms of waves. The target of the
method is to position the Stationed Group at Desired Variable Elevations with resisting
its upward motions based on damping or anchoring/ mooring.
[0174] Thus, purposes of MCVE are:
(1) Keeping energy systems (wind/ wave/ solar), particular Wave Energy Systems,
floating and being stable.
(2) Adapting varies of waves automatically, including varies of average water
levels.
(3) Harvesting wave energy for electric generators based on creating differential
motions of rotors and stators. The MCVE aims to gain longer Travel Ranges of
(Vertically) Slidable Floats for larger amount of wave energy converted to
electricity. Thus, in order to be able to slide from tops to bottoms of waves,
the following requirements must be fulfilled:
(a) The sliding guide structure (the Floating Posts) must be tall enough.
(b) The Stationed Group (Floating Posts) needs to be stationed at desired
elevations allowingthe (Vertically) Slidable Floats to slide coveringfrom
bottoms to tops of waves. In other words, elevations of tops and
bottoms of waves must be fitted within Travel Ranges of the (Vertically)
Slidable Floats at all times. This is done thanks to holding the Floating
Structure at desired elevations by controlling the Variable Elevation. It
is called "The Method of Controlled Variable Elevation (MCVE)". The
process of controlling is detailed in The Method of Automatic
Controlled Stationed Rope (MACSR).
(4) One of the most important features of the MCVE is to be able to harvest energy
of waves with respect to full ranges from bottoms to tops of the waves.
[0175] MCVE requires integrations of the following:
(1) The Method of Applying Submerged Hanging Hollow Damper (MASHHD).
(2) The Method of Automatic Controlled Stationed Rope (MACSR).
(3) Anchoring/ mooring to FPNWA/Ds, or to ground or to other damping systems.
(4) The Solution of Extended Gas Spring (SEGS) or some types of Internal Dampers,
which are built-in wave energy convertors, may be added.
1.28 The Method of Automatic Controlled Stationed Rope (MACSR) (Figure 20)
[0176] The word "rope" here implies both "rope" and "cable' which capable to bear
tensional forces.
[0177] The MACSR is applied for floating structures or systems of floating objects,
including floating energy systems of wind, wave or solar, particularly wave energy
systems.
[0178] In order to adapt changes of the surface of water over time, Stationed Ropes
need to be controlled accordingly in order to:
(1) Maintain objects, which are being anchored/ moored via the Stationed Ropes
to ground or to submerged dampers, floating and being stable.
(2) Maintain Stationed Ropes to be tensioned at all times.
(3) Provide damping to the floating objects.
(4) Create and maximize differential motions between rotor and stator of electric
generators for generating electricity if wave energy systems are integrated.
[0179]Thus, the Stationed Ropes must be able to be:
(1) Extended automatically when waves raising up further than expected
elevations.
(2) Retracted automatically when waves going down further than expected
elevations. In this case, the Stationed Ropes are loose.
[0180] For wave energy systems, in order to maximizing generation of electricity, it is
required controlling the Stationed Ropes extended and retracted, adapting to changes
of the water surface over time.
[0181] The MACSR is developed to fulfil the above requirements.
[0182] The Mechanical MACSR:
[0183] Components of the MACSR:
[0184] The Stationed Rope (#3) is anchored/ moored downwards to ground or
submerged dampers as presented in the direction of (#1). The Hanging Mass (#2) is
hung by a rope, with the other end circling around the Pulley (#8)
[0185] The Pulley (#8) is secured to the One-way Gear (#7). The One-way Gear is
engaged (to the main structure) in its clockwise and released in its anticlockwise
rotations. The Pulley (#8) and the One-way Gear (#7) are secured to the main structure
which is supported by Stationed Floats. Thus, Stationed Ropes are able to anchor the
main structure, including Stationed Floats, at desired elevations.
[0186] Operations of the MACSR:
[0187] The process of extending: This process occurs when the (Vertically) Slidable
Float is raising upwards and the Gear Releasing Bar (#5) has been being released after
being hit by the (Vertically) Slidable Float. When a wave is too tall, the (Vertically)
Slidable Float reaches its top sliding limit of Travel Range at the Top Position and hits
the Gear Releasing Bar (#5). The Gear Releasing Bar hits the Gear Stopping Bar (#6),
making the One-way Gear (#7) released and the Stationed Rope is loose, allowing the
Stationed Rope to be extended. As the wave is raising up both the (Vertically) Slidable
Float and the Stationed Float, it is also raising up the main system structure containing the Pulley (#8), making the Stationed Rope extended and pulling up the Hanging Mass
(#2) as well. The length of the Stationed Rope is then longer and the whole system has
been moved up to a new elevation adapting to the raising water surface. This process
of extending occurs when and only when the (Vertically) Slidable Float disengage the
lock of the One-way Gear (#7) and moves up the whole system's structure.
[0188] The process of retracting: This process of retracting occurs when the process
of extending is not occurring and the Stationed Rope is loose. When the water surface
goes down, making both the (Vertically) Slidable Float and the Stationed Float going
down, causing the Stationed Rope to be loose. In this case, as the One-way Gear (#7)
always allows to rotate anticlockwise, the Hanging Mass (#2) pulls the Stationed Rope
automatically until it is stressed a gain: The Stationed Rope is retracted.
[0189] During periods of time that the (Vertically) Slidable Float moves within the
Travel Range without reaching the Top Position, the length of the Stationed Rope
remains stressed and unchanged. The whole system is floating and being stationed at
a desired elevation.
[0190] The Hanging Mass (#2) can be replaced with any other means having the same
function for retracting and extending the Stationed Rope. The One-way Gear (#7) and
its stopping/ releasing mechanisms can be replaced with any equivalent means having
the same functions.
[0191] The status of extending, retracting and being stationed of the system implies
that the system is adaptable to varies of water surface.
[0192] The Electronic MACSR:
[0193] The principle for operations of The Electronic MACSR is exactly the same with
that of the Mechanical MACSR, except the following: The Gear Releasing Bar and Gear
Stopping Bar are replaced with an electronic component such as an electronic control
system. The Hanging Mass (#2) is not included. An electric controlled drive is used to
extend or retract the Stationed Rope.
1.29 Definitions of the Inertial Hydrodynamic Based Damper (IHBD) and the Submerged
Hanging Hollow Damper (SHHD)
[0194] Inertial Hydrodynamic Based Damper is a damper based on inertial and
hydrodynamic forces for damping. Submerged Hanging Hollow Damper (SHHD) is a
(hollow) damper that is hung and submerged in water. The SHHD is a type of the IHBD
as it is able to generate inertial and hydrodynamic forces for damping.
1.30 The Method of Applying Submerged Hanging Hollow Damper (MASHHD) (Figure 21)
[0195] MASHHD is applied for floating objects, including floating energy systems,
particularly wave energy systems. In general, it is used as dampers or anchors for
stabilizing floating structures. Particularly, for generating electricity from waves, as a
damper is capable to reduce/ resist upward motions caused by waves, it helps to
separate motions of rotors and stators from motions of waves, leading to generating
electricity. The MASHHD is described below:
[0196] The abbreviation "WA/IHBD" stands for "Wave Absorber/ Inertial
Hydrodynamic Based Damper".
[0197] Stationed Groups or Stationed Floats (#3) are anchored/ moored downwards
to WA/IHBDs (#1). The WA/IHBDs are positioned deep enough in water where waves
are much less than that of the surface.
[0198] When a surface wave pushes the Stationed Floats upwards, the WA/IHBD
resists to the upward motions of the Stationed Groups or Stationed Floats thanks to:
(1) downward inertial forces created by the mass of the WA/IHBD and
(2) downward hydrodynamic forces created by the shape of the WA/IHBD when
being pulled in water and
(3) waves in deep water are much less, resulting to upward motions of the
WA/IHBD in deep water is much less than that of the surface.
[0199] The upward motions of the Stationed Groups or Stationed Floats (#3) are
limited/ resisted thanks to damping or anchoring/ mooring whereas the (Vertically)
Slidable Floats (#4) are free to move.
[0200] The shape of the WA/IHBD must meet the following requirements:
(1) The shape is appropriate to be stable when moving upwards or downwards
along the vertical direction.
(2) The shape helps to resist upward motions.
(3) The shape helps to ease downward motions.
(4) It is better to be hollow for Hydrodynamic Dampers.
[0201] The WA/IHBD can also be:
(1) Continued to be anchored/ moored to ground.
(2) Linked to a number of WA/IHBDs around or beneath via Linking Ropes/ Cables
(#7) to form a Net of Dampers which is called the Flexible Porous Net of Wave
Absorbers/ Inertial Hydrodynamic Based Dampers (FPNWA/IHBD). The
number of WA/IHBDs can also be linked together using the Net of Horizontal
Upper Connections, the Net of Vertical Connections and the Net of Horizontal
Lower Connections, making it to be a part of the System of Three-Dimensional
Flexible Porous Net of Multiple Floating Objects (3DFPNFO) as illustrated in
Figure 21 (b) with (#7) and (#8).
(3) Linked to other WA/IHBDs vertically, forming a column of multiple WA/IHBDs.
[0202] An Inertial Hydrodynamic Based Damper can be an Inertial Damper or a
Hydrodynamic Damper or the combination of both Inertial and Hydrodynamic
Dampers.
[0203] If The Method of Automatic Controlled Stationed Rope (MACSR) is not applied
for the (Vertical) Stationed Ropes/ Cables, the Stationed Groups or Stationed Floats
(#3) or the Floating Posts (#5) can be anchored/ moored to the Wave Absorber/
Inertial Hydrodynamic Based Damper (WA/IHBD)s (#1) via Crossed Stationed Ropes/
Cables (#8 in Figure 21 (b)), which is also called the "Crossed Elements (Ropes/
Cables)" of the FPNWA/D or the "Net of Vertical Connections" of the System of Three
Dimensional Flexible Porous Net of Multiple Floating Objects (3DFPNFO). Otherwise,
If the Method of Automatic Controlled Stationed Rope (MACSR) is applied for the
(Vertical) Stationed Ropes/ Cables, the Crossed Stationed Ropes/ Cables (#8) are
secured to the (Vertical) Stationed Ropes/ Cables directly. The same method is also
applied if the (Vertical) Stationed Ropes/ Cables are anchored/ moored to ground
instead of the WA/IHBD. These additional linkages of Crossed Stationed Ropes/ Cables
(#8) help to improve damping efficiency which maintain the whole floating structure,
including the Stationed Floats, at elevations closer to equilibrium positions thanks to
distributing motion energy of every Stationed Float to surrounding WA/IHBDs via
Crossed Stationed Ropes/ Cables.
[0204] Thus, MASHHD is a method to separate motions of a waves into different
motions of stators and rotors. The differential motions of rotor and stator are required
to generate electricity. The separation is done by using damping or anchoring/
mooring.
1.31 The Submerged Hanging Hollow Damper (SHHD) (Figure 22 to Figure 27)
[0205] The word "rope" here implies both "rope" and "cable" capable to bear
tensional forces.
[0206] The SHHD is applied for floating structures or systems of floating objects,
including floating energy systems of wind, wave or solar, particularly wave energy
systems. As a damper capable to resist upward motions, it helps to separate motions
of rotors and stators from every single wave, leading to generating electricity. It also
helps to stabilize floating structures.
[0207] The SHHD is defined to be a type of Inertial Hydrodynamic Based Dampers with
hollow body. It is integrated in and applied for the MASHHD (the Method of Applying
Submerged Hanging Hollow Damper). The purpose of the development of the SHHD is
to provide damping efficiencies and anchoring to floats (Stationed Floats), which hang
the SHHD via ropes or cables. The floats (Stationed Floats) are positioned close to
water surface while the SHHD is being hung in deep water underneath, where waves are much less. Thus, the main common technical features of all types of SHHD classified below is to be able to damp floating objects based on inertial or hydrodynamic forces when being hung underneath water surface.
[0208] The principle of SHHDs working in water similar to that of parachutes working
in the air.
[0209] It helps the Stationed Floats to resist upward motions caused by waves based
on its inertial or hydrodynamic forces generated when it is being pulled up by
Stationed Floats which are raising by waves.
[0210] There arethreetypes of SHHDclassified accordingto inertial and hydrodynamic
forces:
(1) The Hydrodynamic SHHD,
(2) The Inertial SHHD, and
(3) The Combined Inertial and Hydrodynamic SHHD.
[0211] The Hydrodynamic SHHD (Figure 22):
[0212] It is a hollow cylinder (#3) with a cap of a hollow conical frustum (#2) at the
bottom. It has a hole (#1) at the top of the cap where water can get through. If the
Hydrodynamic SHHD does not have the hole (#1), it becomes the Inertial SHHD as all
the water contained has no hole to escape.
[0213] The technical features and benefits of the SHHD are:
(1) sinking down easier thanks to the cone shape of the cap. Downward
movements are also stable with the cap of cone shape.
(2) resisting to pulling upwards thanks to the cap of a hollow conical frustum with
a hole for the stability of upward motions. Thus, Stationed Floats anchored/
moored to the SHHD are being prevented from upward motions.
(3) Being light weight as the SHHD is hollow. Thus, the Stationed Floats just need
to float light SHHDs beneath.
(4) The (Vertical) Stationed Ropes/ Cables being used to hang the SHHD are
arranged in different ways to maintain the stability of upward motions and to
protect the structure of the SHHD.
[0214] The Inertial SHHD (Figure 23):
[0215] The Inertial SHHD has the same shape with The Hydrodynamic SHHD. However,
it is not hollow or, if it is hollow, it has no holes at its bottom (the top of the hollow
conical frustum).
[0216] The technical features and benefits of the SHHD are:
(1) sinking down easier thanks to the cone shape of the cap. Downward
movements are also stable with the cap of cone shape.
(2) resisting to pulling upwards thanks to inertial force caused by masses of
materials filled. Thus, Stationed Floats anchored/ moored to the SHHD are
being prevented from upward motions.
(3) Being light in weight when it is empty. It is preferred to be filled with some
types of appropriate onsite materials. Both sand and waterare preferred to be
used for filling the SHHD. The mass of sand helps the SHHD to be able to sink
and helps to create inertial force when pulling upwards. Water also helps to
create inertial force and contribute some damping effects.
(4) It is important that, the top side of the cylinder (#9) might be fully uncovered,
making the SHHD to contain water fully. However, the water will not escape
when it is being pulled up as the SHHD has no holes at its bottom. Thus, the
top opened body of the SHHD is still able to help the SHHD generating inertial
force thanks to the amount of the water contained.
(5) The difference of the Inertial SHHD in comparison with typical ones is that it is
filled with a mixture of onsite materials such as sand or water.
[0217] The (Vertical) Stationed Ropes/ Cables being used to hang the SHHD are
arranged in different ways to maintain the stability of upward motions and to protect
the structure of the SHHD.
[0218] The Combined Inertial and Hydrodynamic SHHD (Figure 24):
[0219] The Combined Inertial and Hydrodynamic SHHD comprises a hollow cylinder
(#13) with a cap of a hollow conical frustum (#12) at the bottom. It has a hole (#1) at
the top of the cap where water can get through. However, unlike The Hydrodynamic
SHHD with the solid walls of the body, the walls of the body of the SHHD (composed
of a hollow cylinderand a cap of a hollow conical frustum) are also hollow as they have
their own walls (#14), making the body of the SHHD to be a container for filling
damping materials such as water or sand.
[0220] Technical features and benefits of the SHHD: It has all technical features of both
the types of inertial force based and the hydrodynamic force based.
[0221] The SHHD Sectors (Figure 25):
[0222] The SHHD can be divided into from 2 to 32 Sectors (#17) for ease in
manufacturing, transportation, installation and maintenance. These Sectors can be
made of any appropriate materials. Each Sector can contain materials like water or
sand for inertial and hydrodynamic damping as well. Benefit of the Sectors are:
(1) Walls between sectors of the SHHD help to improve stiffness of the SHHD
structure. The walls between sectors are good to protect the structure of
the SHHD under high pressure of deep water.
(2) Easierto manufacture, transport, install and maintain as the body of SHHD
can be large.
[0223] The SHHD Net-Bag (Figure 26):
[0224] The SHHD can be embraced with Circular Ropes (#15). These Circular Ropes are
secured with Vertical Ropes (#16) which are secured together before connecting to a
(Vertically) Slidable Float via a Stationed Rope. These Ropes connected together to be
what called a Net-Bag. Benefits of the Net-Bags are:
(1) squeezing Sectors of the SHHD together.
(2) beinga rope structure protecting the SHHD, particularly when being pulled
upwards.
(3) Easier to manufacture, transport, install and maintain.
[0225] The Wrapped Used Tyre Damper (WUTD) (Figure 27):
[0226] The WUTD is composed of used tyres and a Net-Bag. Used tyres (#18) in
different sizes are wrapped randomly in bulk or in a column with a net of ropes which
is called a Net-Bag comprising Circular Ropes (#15) and Vertical Ropes (#16).
[0227] Technical features and benefits of the WUTD are described below:
(1) The shapes and masses of tyres make it to be good for creating both
hydrodynamic forces and inertial forces which help to resist upward motions
of the WUTD and, as a result, the Stationed Floats.
(2) The arrangement of used tyres in the column with bigger tyres positioned
upwards and smaller tyres positioned downwards helps to improve resisting
upward motions and ease the downward motions as well.
[0228] The method of using nets of ropes such as the Net-Bag for wrapping used tyres
helps to ease transportation, installation and maintenance.
1.32 The Solution of Maximizing Differential Motions (SMDM) (Figure 28)
[0229] The method helps to maximize creating differential motions of rotors and
stators from motions of waves for wave energy convertors or wave energy systems. It
is applied for wave energy systems, including wave energy convertors with either
linear or rotational electric generators.
[0230] Typical floating wave energy convertor (WEC)s usually use a mechanical
damping device or electronic controlled damping device connecting two component
groups of a floating WEC: The first group is connected to a stator and the second group
is connected to a rotor of an electric generator. This type of damping device might be
called "Internal Damper" because:
(1) it is usually built inside wave energy convertors, and
(2) it connects two component groups of the WEC directly. Thus, each group is
being damped by the mass of the other group via the damper.
[0231] Thus, as a result of damping effects, motions of waves cause oscillations of
these groups differently. This leads to creating differential motions of rotors and
stators for generating electricity. These (internal) damping devices work similar to
springs. However, limits of such a damper possibly are:
(1) As Internal Dampers are usually fit inside floating wave energy convertors, the
travel range of linear motions of the Internal Dampers might be quite limit in
comparison with wave heights like that of offshore waves. This leads to wasting
wave energy.
(2) Life time or mechanical spring might be quite limit for continuous motions of
waves whereas electronic controlled springs might be expensive and require
much maintenance.
(3) Capacities of dampers might be limit in comparison with huge energy of waves
and heavy weights of devices. Thus, these dampers may only cope with a small
portion of wave energy and seem to be appropriate to small waves.
[0232] The developed SMDM does not apply dampers connecting the first and the
second groups (called the Stationed Group and the Movable Group) directly. In other
words, instead of sticking these Groups together via Internal Dampers with limits of
linear motions, the SMDM applies damping externally. Features of the SMDM are
listed below:
(1) An External Damper (#1) such as an Inertial Hydrodynamic Based Damper,
particularly a SHHD, or the Ground hooks to the Floating Posts (#8) or the
Stationed Floats (#3) of the Stationed Group (#3, #8, #9) which includes the
system's floating structure (#3, #8 and #9), via (Vertical) Stationed Ropes/
Cables (#2). The (Vertical) Stationed Ropes/ Cables limits motions, which are
caused by waves, of the Stationed Group, including the Stationed Floats,
Floating Posts and the floating structure of the whole wave energy system.
(2) A compound of (Vertically) Slidable Floats (#4 or #10 or #11) slidable along the
Floating Posts (#8) from its bottom sliding limit to top sliding limit positions.
(3) The Floating Post is secured vertically to the floating structure (#3, #8 and #9)
of the system. It should be tall enough for the (Vertically) Slidable Floats to
slide covering from bottoms (#10) to tops (#4) of waves. The distance between
the top sliding limit and the bottom sliding limit positions of the Floating Post
for sliding the (Vertically) Slidable Floats is called Sliding Range.
(4) The floating structure of the whole wave energy systems is set to be stationed
(a part is floating and a part is being submerged) at the surface of water as
explained in descriptions of The Method of Controlled Variable Elevation
(MCVE), and The Method of Automatic Controlled Stationed Rope (MACSR) as
well as the Surrounding Prestressed Floating Post (SPFP).
[0233] As the (Vertically) Slidable Floats are able to slide from bottoms (#10) to tops
(#4) of waves while the Stationed Floats are being hold firmly around its equilibrium
position by appropriate External Dampers, which are possible to provide appropriate
damping efficiencies, the differential motions between the Stationed Floats and the
(Vertically) Slidable Floats are able to be maximized. As a result, the differential
motions (called Differential Motions) between the rotors and the stators of generators
are also possible to be maximized.
[0234] The key developed features of the SMDM are:
(1) Maximizing Differential Motions by using two floats (Stationed Floats and
(Vertically) Slidable Floats) with External Dampers instead of using one float.
(2) Maximizing Sliding Range of (Vertically) Slidable Floats by:
(a) Maximizing Differential Motions, and
(b) using a Floating Post integrated with sliding rails (such as the Surrounding
Prestressed Floating Post (SPFP) integrated with the (Prestressed)
Structural Rail Tube/ Beam), making the (Vertically) Slidable Floats to be
able to reach tops and bottoms of waves.
(c) As the (Vertically) Slidable Float is developed to be able to slide upwards
and downwards, fully covering from tops to bottoms of waves, the SMDM
can help to harvest more wave energy.
[0235] A wave energy system includes a number of External Dampers, (Vertically)
Slidable Floats, Stationed Floats, Stationed Ropes and Floating Posts which are key
components related to the SMDM.
1.33 The Revolution Roller Guide (RRG) (Figure 29 and Figure 30)
[0236] The RRG is applied for wave energy systems and (floating/ grounding) solar
tracking systems for supporting and guiding tubes/ beams of sliding structures (called
Sliding Structures), or ropes/ cables of mechanical power transmission systems.
[0237] It has three types depending on using purposes applied for wave/ solar energy
systems:
(1) The Sliding Unclosed Revolution Roller Guide (SURRG), and
(2) The Sliding Enclosed Revolution Roller Guide (SERRG), and
(3) The Transmitting Enclosed Revolution Roller Guide (TERRG).
[0238] The Sliding Unclosed Revolution Roller Guide (SURRG) (Figure 29)
[0239] The SURRG is a Sliding Revolution Guide applied for wave energy systems. Its
main function is to be applied for linear Sliding Structures. It is particularly developed
to support a special Sliding Structure which is called "the Vertical Sliding Floating
Structure (VSFS)" with heavy loads sliding along Structural Rail Tubes/ Beams (SRTB)s
(#2) which belong to main structures of floating energy systems. A Vertical Sliding
Floating Structure (VSFS) requires a number of SURRGs integrated at positions
arranged in three dimensions.
[0240] The SURRG is developed to meet requirements of linear motions of wave
energy systems. The requirements are listed below:
(1) Handling linear motions of Vertical Sliding Floating Structure (VSFS)s, usually
vertically, with quite large horizontal forces caused by waves.
(2) Preventing twisting motions of Vertical Sliding Floating Structure (VSFS)s with
heavyloads.
(3) Frictions should be reduced by using rollers with bearings for SURRG.
(4) Linear motions of Vertical Sliding Floating Structure (VSFS)s need to be guided
along SRTBs by using SURRG.
(5) SRTBs function as both rails for sliding and beams for bending resistance. The
SRTB can be integrated with prestressed ropes: It is a Centred Prestressed
Rope Beam (CPRB) combined with rails for sliding a structure. In this case, the
SRTB it is called "Prestressed Structural Rail Tubes/ Beams (Prestressed SRTB)"
[0241] Components and operations of the SURRG are:
(1) Two Revolution Guide Roller (RGR)s (#8). Each RGR has two bearings and an
axis. The RGR can be round or polygon (such as square, pentagon, hexagon,
heptagon, octagon....) for the SRTB to slide through.
(2) (Prestressed) Structural Rail Tube/ Beam ((Prestressed) SRTB) (#2).
(3) Cross sections of the (Prestressed) SRTB can be hollow cylinders or hollow
polygons. It might and might not have two Structural Rail Bar (SRB)s (#16 in
Figure 29) along its body for anti- twisting motions and structural connections
as well as sliding. Some types of cross sections of the (Prestressed) SRTB are
presented in Figure 29 (c): round, square, hexagon and octagon.
(4) Each RGR should have two cylinders which are called RGR's Cylinders (#9) at its
two ends for rolling on the two SRBs (#16) and for anti-twisting.
(5) The two RGRs rolls on the main body of the SRTB as well as its two SRBs. Some
types of cross sections of the SRTB with SRBs are presented in Figure 29 (c).
Quantity of SRBs surrounding the SRTB must be at least two.
(6) The Unclosed Structural Ring (USR) (#10) securing the two RGRs. The USR has
a mount opened to allow structural connections of the (Prestressed) SRTB to
the main floating structure of the energy system. The structural connections
allow the SURRG sliding thanks to the opened mount of the USR.
(7) The two SRBs help to prevent twisting motions. If the (Prestressed) SRTB is a
hollow polygon, the two SRBs for anti-twisting may not be necessary.
(8) A number of the SURRG can be integrated in linear sliding components of wave
energy systems such as (Vertically) Slidable Floats or Vertical Sliding Floating
Structures.
[0242] The Sliding Unclosed Revolution Roller Guide (SURRG) is different with roller
guides such as the Transmitting Enclosed Revolution Roller Guide (TERRG) as explained
below:
(1) Rings of roller guides (or TERRGs) are usually enclosed. Roller guides (or
TERRGs) work with tensional forces which appear along ropes/ cables.
(2) Ropes/ cables are flexible when used with roller guides (or TERRGs).
(3) Ropes/ cables connect to main structures at two ends when used with roller
guides (or TERRGs).
(4) In contrast, rings of SURRG must be unclosed because Structural Rail Tubes/
Beams have to secured to main large structures at multiple points.
(5) SURRG must also work with large horizontal and twisting forces caused by
waves.
(6) Structural Rail Tubes/ Beams (used with SURRG) are not flexible like ropes/
cables (Used with roller guides (or TERRGs)).
(7) SURRGs roll along Structural Rail Tubes/ Beams whereas ropes/ cables slide
through roller guides (orTERRGs).
(8) The SURRG is not able to work alone: A number of SURRG are secured to a
structure in three dimensions, supporting the structure sliding along Floating
Posts. In contrast, rollerguides (orTERRGs) can work alone.
(9) The SURRG is able to prevent twisting motions of Sliding Structures thanks to
cylinders (#9) included at two ends of the RGRs in working together with SRBs
(#16).
[0243] The Sliding Enclosed Revolution Roller Guide (SERRG)
[0244] The Unclosed Structural Ring (USR) (#10) might not be required to be unclosed
in some cases. Instead of using the USR, an Enclosed Structural Ring (ESR) which is annular, can be integrated. The Sliding Revolution Roller Guide with ESRs integrated is called the Sliding Enclosed Revolution Roller Guide (SERRG). The SERRG is classified as a version of the Sliding Unclosed Revolution Roller Guide (SURRG).
[0245] The Transmitting Enclosed Revolution Roller Guide (TERRG) (Figure 30).
[0246] The TERRG is applied for wave energy systems and (floating or grounding) solar
tracking systems for guiding ropes/ cables.
[0247] The roles and technical features of the TERRGs for wave energy systems and
solar tracking systems are:
(1) Due to large and slow motions of waves leading to large displacements,
transmission systems using ropes, cables, chains, and belts required to be
guided.
(2) The TERRGs ensure accuracy of sliding motions of ropes/ cables. It also reduces
frictions as well as protects structures, ropes, cables, and belts.
(3) It Helps to improve efficiency of mechanical power transmissions, leading to
efficiency of wave energy systems and solar tracking systems.
(4) It is Developed to cope with long distance mechanical power transmissions as
well as oscillations by waves
[0248] The applications of the TERRG are:
[0249] For guiding drive ropes: applied for transmission systems or any other systems
of floating or grounding energy systems such as:
(1) The Bidirectional Linear to Rotational Transmission System by Drive Ropes
(BLRTS By DR)
(2) The Twisting Rotational-to-Rotational Transmission System by Drive Ropes
(TRRTS By DR) or the Twisting Linear-to-Rotational Transmission System by
Drive Ropes (TLRTS By DR). The TRRTS By DR and the TLRTS By DR are applied
for both wave energy systems and solar tracking systems.
(3) The Method of Automatic Controlled Stationed Rope (MACSR)
[0250] There are two types of TERRG:
(1) Rectangular Roller Guide (Figure 30 (a))
(2) Revolution Roller Guide (Figure 30 (b), (c), (d))
[0251] Revolution Roller Guide: It composes of two revolution rollers forming a
circular or polygonal or rectangular hole for ropes sliding through linearly. The shape
of the revolution roller is advantaged to integrates two bearings (#6) at its two ends.
Some types of Rollers are presented in Figure 30: Circular Roller (#3), Square Roller
(#4), and Hexagon Roller (#5).
[0252] Rectangular Roller Guide: It composes of four Cylindrical Rollers (#2) forming a
square or rectangular hole for ropes/ cables getting through linearly.
[0253] The TERRG are required for floating or grounding energy systems to cope with
long distance transmissions and oscillations by waves. It can be integrated in tensioner
guides or structures where required.
1.34 The Liquid Kinetic Damping Float (LKDF) (Figure 31).
[0254] The LKDF is applied for floating objects, including floating energy system,
particularly wave energy systems.
[0255] Kinetic Damping implies the progress of regulating energy, subjected to some
kind of damping, transmitted from waves through transmission systems to electric
power generators, allowing the generators to receive energy from waves in a better
regulated time history amount of energy.
[0256] The method is to fill (Vertically) Slidable Floats partially with water. It makes
the (Vertically) Slidable Floats to be able to:
(1) Gain more weights for accumulating more kinetic energy and converting the
kinetic energy to potential energy when the (Vertically) Slidable Floats are
being raised upwards by waves and
(2) Release and send the accumulated energy (in the form of potential energy)
through transmission systems to electric generators when the (Vertically)
Slidable Floats are going downwards.
(3) be liquid dampers, which help to resist horizontal motions of structures caused
by waves.
[0257] The LKDF is developed for regulating energy transmitted from waves to electric
generators. During the first phase that the (Vertically) Slidable Floats moving upwards,
a part of wave energy is transmitted and then used to generate electricity. Another
amount of wave energy is accumulated in the form of potential and kinetic energies
when the mass of water in the (Vertically) Slidable Floats moved up to higher
elevations. Then the accumulated energy is used to continue generating electricity
during the second phase, in which the (Vertically) Slidable Floats are moving down.
Thus, the transmitted wave energy is more regulated, making the electric generator
to be rotated smoother. As a result, the wave energy converted rate is improved and
the electric current generated is more regulated before reaching inverters.
[0258] In addition, the liquid filled (Vertically) Slidable Floats contribute damping
efficiency in resisting horizontal motions of the system structure as well.
[0259] The partially liquid filled (Vertically) Slidable Float is called the Liquid Kinetic
Damping Float.
1.35 (Prestressed) Structural Rail Tube/ Beam ((Prestressed) SRTB)
[0260] A Structural Rail Tube/ Beam (SRTB) is composed of a structural tube or beam
with rails attached along its body for sliding an object.
[0261] A Prestressed Structural Rail Tube/ Beam (Prestressed SRTB) is a Structural Rail
Tube/ Beam (SRTB) with prestressed ropes/ cables integrated similar to Dual
Prestressed Rope Beam (DPRB)s. In other words, the Prestressed SRTB is also a type
of DPRBs.
1.36 The Surrounding Prestressed Floating Post (SPFP) (Figure 32)
[0262] The SPFP is applied for floating energy systems, particularly wave energy
systems, wind energy systems and solar energy systems. It can also be applied for
grounding solar energy systems where tall posts are required.
[0263] Floating Post is a post bearing components of floating energy systems,
including:
(1) Wave Energy Convertors: (Vertically) Slidable Floats, Bidirectional Linear to
Rotational Transmission System (BLRTS) for Wave Energy Systems, electric
generators, Stationed Ropes, related structures or components, and related
loads. Other components of Wave Energy Systems are also included.
(2) Solar Energy Systems: solar panels, related structures or components, and
related loads.
(3) Wind Energy Systems: wind turbines, related structures or components, and
related loads.
(4) Anchoring/ mooring systems and damping systems.
[0264] Floating Post is not only a component of the wave energy systems but also the
main part of the system's structure, responsible for stability and functions of the
system's structure floating on the body of water. Main roles of the Floating Post are:
(1) Bearing a Vertical Sliding Floating Structure (VSFS) (#15) with (Vertically)
Slidable Floats attached on the body of water, adapting large loads of waves,
winds, and anchoring/ mooring systems or damping systems.
(2) Being a part of the transmission systems to transmit mechanical energy from
waves to electric generators. It is where the transmission systems are secured
and arranged.
(3) Being where Stationed Floats are secured and Stationed Ropes (#5) are
mounted. It has an important role for damping the Stationed Group of the
whole system, enabling the process of generating electricity from waves. It is
a main part to split energy of waves in creating differential motions of rotors
and stators of electric generators.
(4) Supporting floating solar energy systems, including solar tracking systems. Its
roles as a floating post or a floating object in the System of Three-Dimensional
Flexible Porous Net of Multiple Floating Objects (3DFPNFO), allowing the solar
energy systems, including solar tracking systems, to be integrated.
(5) Supporting floating wind energy systems including wind turbines.
(6) Maintaining the stability of the whole system's structure, including its
structural connections to damping/ anchoring/ mooring systems or to other
Floating Posts.
[0265] The Floating Post developed for the HESSWW (the Adaptive Flexible Hybrid
Energy Systems of Solar, Wave and Wind) is called "The Surrounding Prestressed
Floating Post (SPFP)".
[0266] Components of the SPFP:
(1) A Central Structural Rail Tubes/ Beams (Central SRTB) (#1) which has its cross
section presented in Figure 32 (e). The Central SRTB might have a number of
Structural Rail bar (SRB)s around (Figure 32 (h)). Cross sections of the Central
SRTB might be round or polygon. The Central SRTB might also be a
(Prestressed) SRTB with prestressed ropes/ cables integrated similar to the
Centred Prestressed Rope Beam (CPRB). The Central SRTB also integrates
Transmitting Enclosed Revolution Roller Guide (TERRG)s (#11) for guiding
(Vertical) Stationed Ropes/ Cables (Figure 32 (e)).
(2) A number of (Prestressed) Structural Rail Tube/ Beam ((Prestressed) SRTB)
(#2), which has its cross section presented in Figure 32 (f), distributed around
the Central SRTB. Depending on circumstances, these SRTBs can either be
prestressed or not to be prestressed (either to be a Prestressed SRTB or
simply a SRTB).
(3) A number of Floating Post's Crossed Frame (FPCF) (#3).
(4) A number of Floating Post's Surrounding Frame (FPSF) (#4).
(5) A Stationed Rope/ Cable (#5).
(6) A number of Crossed Bars/ Ropes/ Cables of the FPCF (#6).
(7) A number of Crossed Bars/ Ropes/ Cables of the FPSF (#7).
(11) A number of Transmitting Enclosed Revolution Roller Guide (TERRG) (#11).
(12) A number of Circular Rope Supports (#12).
(13) A number of Tensional Ropes/ Cables (#13).
(14) A number of Sliding Unclosed Revolution Roller Guide (SURRG) (#14) secured
to Vertical Sliding Floating Structure (VSFS)s (#15) for sliding on and along the
body of the SPFP.
(15) A number of Dual Prestressed Rope Beam (DPRB)s can be integrated where
required.
[0267] Arrangements of the components of the SPFP:
(1) A number of FPCF (#3) are secured to the a Central SRTB (#1).
(2) Every FPCF (#3) is secured with a (Prestressed) SRTB (#2).
(3) Every pair of consecutive (Prestressed) SRTBs (#2) of every pair of consecutive
FPCFs (#6) are connected via a FPSF (#4).
(4) A number of Sliding Unclosed Revolution Roller Guide (SURRG) (#14) are
installed slidable along the body of the (Prestressed) SRTBs (#2). All installed
SURRGs are secured to the Vertical Sliding Floating Structure (VSFS) (#15)
which bears (Vertically) Slidable Floats.
(5) A Stationed Rope/ Cable (#5) is installed inside and along the Central SRTB
(#1) with a number of TERRG (#11) included for guiding and supporting the
Stationed Rope.
(6) A number of Tensional Rope/ Cable (#13) are installed inside every
(Prestressed) SRTB (#2) with a number of Circular Rope Support (#12)
included.
(7) Quantity and arrangements of the (Prestressed) SRTB (#2), the FPCF (#3), the
FPSF (#4), the SURRG) (#14), and other components installed around the
Central SRTB (#1) may vary.
(8) Instead of using the whole length of the Central SRTB, sections of the Central
SRTB with built in TERRG can be applied for light loads.
(9) The Crossed Bars/ Ropes/ Cables of the FPCF (#6) and FPSF (#7) can be ropes,
cables, bars (for tension) or trusses (for both tension and compression).
(10) A Cross section of the Central Structural Rail Tubes/ Beams (Central SRTB)
(#1) is presented in Figure 32 (e).
(11) A Cross section of the (Prestressed) Structural Rail Tube/ Beam ((Prestressed)
SRTB) (#2) is presented in Figure 32 (f).
(12) A Cross section of the Sliding Unclosed Revolution Roller Guide (SURRG) (#14)
with (Prestressed) SRTB (#2) integrated in the center is presented in Figure
32 (g).
(13) An arrangement of a SPFP with a number of SURRGs and a Vertical Sliding
Floating Structure (VSFS) is presented in Figure 32 (b). The number of SURRG
applied for the SPFP may vary.
[0268] The Simplified SPFP: The SPFP has a simplified version, which is called "the
Simplified SPFP", applied for lighter loads or shorter length, particularly for structures
working on smaller waves. The Simplified SPFP has the following main components:
(1) A Central Structural Rail Tubes/ Beams (Central SRTB) (#1), similar to the full
version of the SPFP above. A number of Structural Rail Bar (SRB)s should be
attached to the body of the Central SRTB for sliding and anti-twisting. Some
types of crossed sections of the Simplified SPFP are presented in Figure 32 (h).
(2) A number of Sliding Enclosed Revolution Roller Guide (SERRG)s integrated with
Vertical Sliding Floating Structure (VSFS)s (#15) sliding on the body of the
Simplified SPFP. The SERRGs are applied with the Simplified SPFP instead of
SURRGs.
(3) Other structures of the SPFP, which surround the Central SRTB, are not
required because the Simplified SPFP bears less loads than the full version of
(4) The Simplified SPFP might or might not be prestressed as it bears lighter loads.
(5) The main function of the Simplified SPFP is to support Vertical Sliding Floating
Structure (VSFS) for both sliding and anti-twisting.
[0269] Columns of wind turbines or any other stable floating or grounding objects can
be considered to be functional as a Central Structural Rail Tubes/ Beams (Central SRTB)
(#1) of Floating Posts. Thus, components of the SPFP can be attached to the above
columns/ objects to create a type of Floating Post.
1.37 The Vertical Sliding Floating Structure (VSFS) (Figure 33)
[0270] The VSFS is applied for wave energy systems, including wave energy
convertors. It is a key component to create differential motions between rotors and
stators of electric generators.
[0271]Technicalfeatures ofthe VSFS:
(1) The VSFS, which is integrated in wave energy systems, is a structure floating
and sliding along a Floating Post of a floating structure on a body of water.
(2) The VSFS is slidable with an option of using roller guides such as the Sliding
Unclosed Revolution Roller Guide (SURRG) or the Sliding Enclosed Revolution
Roller Guide (SERRG) (#3) for guiding and supporting the VSFS on the body of
water. Roller guides can be excluded if friction is accepted when sliding the
structure. Other methods such as usingwater may be applied to reduce friction
instead of applying Revolution Roller Guide (RRG)s.
(3) It bears (Vertically) Slidable Floats (#8) for harvesting wave energy.
(4) It bears a part of mechanical power transmission systems for transmitting
harvested wave energy to electric generators.
(5) It may also bear (sliding) electric generators required by some types of
mechanical power transmission systems.
(6) Its body is strengthened with Surrounding Crossed Ropes/ Cables/ Bars/
Trusses (#4) which also helps to prevent twisting or bending. Ropes are more
preferred.
(7) It might be integrated with Centred Prestressed Rope Beam (CPRB)s or Dual
Prestressed Rope Beam (DPRB)s.
[0272] Components and arrangements of the VSFS:
(1) The VSFS has a number of Sliding Beams (#1) capable to bending moments
created by horizontal forces of waves. Centred Prestressed Rope Beam (CPRB)s or Dual Prestressed Rope Beam (DPRB)s are preferred to be incorporated in lieu of normal Sliding Beams.
(2) The VSFS has a number of Sliding Rings (#2) secured to Sliding Beams.
(3) The VSFS has a number of Roller Guides such as Sliding Unclosed Revolution
RollerGuide (SURRG)s ora numberof Sliding Enclosed Revolution RollerGuide
(SERRG)s (#3) secured to the Sliding Rings.
(4) The VSFS has a number of Surrounding Cross Ropes/ Trusses (#4) for anti
twistingand anti-bending. The Surrounding Cross Ropes/Trusses can be ropes,
cables, bars or trusses.
(5) The VSFS slides along a number of (Prestressed) Structural Rail Tube/ Beam
((Prestressed) SRTB) (#5) of the Floating Post which comprises a Central
Structural Rail Tubes/ Beams (Central SRTB) (#6), and a Stationed Rope (#7).
(6) A number of Float Hubs to hold a number of (Vertically) Slidable Floats (#8).
Multiple annular (Vertically) Slidable Floats might be arranged in elevated
layers.
(7) A Top Platform secured on top of the VSFS for bearing (sliding) electric
generators.
(8) A number of (Vertically) Slidable Floats (#8).
1.38 The Solution of Extended Gas Spring (SEGS) (Figure 34)
[0273]The word "gas" here implies gas or air or any other fluid has the same function
for springs.
[0274] SEGS is applied for floating energy systems, particularly wave energy systems.
As a damper capable to resist motions, a gas spring helps to separate motions of rotors
and stators from every single wave, leading to creating differential motions of rotors
and stators for generating electricity.
[0275] The application of gas springs in wave energy systems is a solution for Variable
Elevation Control which handles the task of harvesting and transmitting wave energy
to electric generators.
[0276] Most typical gas springs have quite short Travel Ranges in comparison with
offshore wave heights. Structures for wave energy systems are also too tall if gas
springs are accepted to be long. The Solution of Extended Gas Springforwave energy
systems helps to solve the problem, allowing the structure of energy systems not to
be too tall while maximizing Travel Ranges within limits of the system structure for
generating electricity.
[0277] Description of the SEGS:
[0278] The SEGS comprises a gas spring with a piston and a primary cylinder (#4) for
the travel of the piston. The piston is able to travel along a section of the length of the
primary cylinder around its equilibrium position.
[0279] In order to extend the travel range of the piston, the SEGS is added with
additional cylinders (#5) connecting to the primary cylinder through the Gap/ Holes
(#6). These cylinders are communicating vessels for gas.
[0280] Thanks to additional cylinders, as gas can escape from primary cylinders to
reside in additional cylinders, pressure in the primary cylinder is maintained to be
smaller for longer travel range than its equilibrium pressure which limits travel range.
Thus, the piston of the gas spring is still possible to travel further: the travel range is
extended and more wave energy is accumulated for electric generators.
[0281] Technical features of the Extended Gas Springs are:
(1) Supporting the whole system, bearing the system weight and transferring the
weight to floats.
(2) Working as shock absorbers.
(3) Handling the process of transferring wave energy to electric generator. It
eliminates the need of mechanical power transmissions. It contributes the
roles of relative (differential) motions between rotors and stators of electric
generators through arrangements of Stationed Groups (including Stationed
Floats) and Movable Groups (including (Vertically) Slidable Floats) of wave
energy systems. As a result, unlike other damping devices, the gas spring allows to use only one type of floats combined functions of (Vertically) Slidable Floats and Stationed Floats for both floating and harvesting wave energy.
(4) Working as an energy regulator or an energy damper. During the first phase of
a wave raising up, a portion of the wave energy is transmitted directly to
electric generators. Another portion of the wave energy is absorbed by the gas
spring. Then the gas spring releases the accumulated energy for electric
generators during the second phase of wave going down. Thus, the gas spring
works as energy regulators and dampers. However, Travel Ranges of gas
springs are quite limit in comparison with oscillations of waves, particularly
offshore waves.
(5) In addition to the above features of typical gas spring, the SEGS helps to extend
the Travel Range of gas springs for generating more electricity.
1.39 The Flexible Interlinked Wave Energy System (FIWES) (Figure 35)
[0282] The FIWES, which is composed of wave energy converters structurally
interlinked together, is the system responsible for the process of harvesting and
transmitting wave energy.
[0283] The FIWES is developed to adapt variations of water surface, including high
waves, tides and tsunamis.
[0284] The components and the arrangement of the FIWES are described below:
(1) A System of Three-Dimensional Flexible Porous Net of Multiple Floating
Objects (3DFPNFO).
(2) A number of Floating Posts or Surrounding Prestressed Floating Post (SPFP)s
(#8 in Figure 35) linking together via ropes/ cables or Dual Prestressed Rope
Beam (DPRB)s (#9). These ropes/ cables or DPRBs are arranged according to
the 3DFPNFO.
(3) A number of Stationed Floats (#3) secured to the Floating Posts or the SPFPs
(#8). Shapes of the Stationed Floats can be (annular) sphere or cylinder,
composing of sectors. The Stationed Floats can also be filled up partially with
water for damping.
(4) A number of Dampers (#1) being interlinked together via Linking Ropes (#10)
to form a Net of Dampers which is called the Flexible Porous Net of Wave
Absorbers/ Dampers (FPNWA/D). Particularly and similarly, the Inertial
Hydrodynamic Based Dampers (#1), which are dampers based on inertial
and/or hydrodynamic forces can also be interlinked together via Linking
Ropes (#10) to form the Flexible Porous Net of Wave Absorbers/ Inertial
Hydrodynamic Based Dampers (FPNWA/IHBD), can also be included. In
addition, Submerged Hanging Hollow Damper (SHHD)s, which are defined as
a specific type of Inertial Hydrodynamic Based Dampers, are possible to be
included as well.
(5) A number of (Vertical) Stationed Ropes/ Cables (#2) and Crossed Stationed
Ropes/ Cables (#11) hanging the number of Inertial Hydrodynamic Based
Dampers (#1), including the FPNWA/IHBD, or anchoring to ground. The
Crossed Stationed Ropes/Cables is alsocalled the "Crossed Elements (Ropes/
Cables)" of the FPNWA/D or the "Net of Vertical Connections" of the System
of Three-Dimensional Flexible Porous Net of Multiple Floating Objects
(3DFPNFO).
(6) A number of Rotational Electric Generators (#7) or Linear Motion Electric
Generators integrated.
(7) A number of Sliding Structures, particularly the Vertical Sliding Floating
Structure (VSFS)s. The Sliding Structures, including the (VSFS)s, may and may
not comprise the Revolution Roller Guide (RRG). The Sliding Structures slide
along bodies of the Floating Posts or the SPFPs.
(8) A number of (Vertically) Slidable Floats or Liquid Kinetic Damping Float
(LKDF)s (#4) secured to the Sliding Structures for harvesting wave energy. The
(Vertically) Slidable Floats can be composed of sectors. They can also be filled
up partially with water, making them to be the LKDFs.
(9) A number of mechanical power transmission systems (#5) such as the
Bidirectional Linear to Rotational Transmission System (BLRTS)s transferring
energy harvested by the (Vertically) Slidable Floats/ Liquid Kinetic Damping
Float (LKDF)s (#4) to the Rotational Electric Generator (#7) or Linear Motion
Electric Generators.
(10) A number of Flexible Compressible Net of Ropes (FCNR)s can be included to
support light weight components such as electric cables.
(11) A numberof Floating Damping Wave Energy Convertor (FDWEC)s, which have
electronic controlled dampers or spring dampers integrated, can also be
included.
(12) A number of Stretchable Vertical Crossed Elements (SVCE)s might be
integrated.
(13) A number of Solution of Extended Gas Spring (SEGS)s might also be
integrated.
(14) In addition, the following methods or solutions are also implemented:
(a) The Solution of Arch Waterway through Linked Floating Objects
(b) The Method of Automatic Rope Retracting Mechanism (MARRM)
(c) The Method of Controlled Variable Elevation (MCVE)
(d) The Method of Automatic Controlled Stationed Rope (MACSR)
(e) The Method of Applying Submerged Hanging Hollow Damper
(f) The Solution of Maximizing Differential Motions (SMDM)
[0285] The FIWES is also developed to work with not only Surrounding Prestressed
Floating Post (SPFP)s but also any type of Floating Posts (#8), including available
floating/ grounding structures/ objects such as columns of either small or tall wind
turbines, oil rigs or concrete walls. These structures/ objects can be added with
selected components of the SPFP to be functional as a SPFP. Thus, the FIWES can be
added to available offshore or nearshore wind farms as well.
1.40 The Adaptive Solar Energy System (ASES)
[0286] The Adaptive Solar Energy System is the system of solar energy, which includes
one or more of the following options to adapt different circumstances:
(1) Floating or Grounding.
(2) With or without "solar tracking".
(3) Single Axis or Dual Axes, if the option "solar tracking" is included.
[0287] Depending on which options are included, the ASES might include one or more
components/ methods below:
(1) A System of Three-Dimensional Flexible Porous Net of Multiple Floating
Objects (3DFPNFO) linking all (floating) objects of the ASES. The 3DFPNFO can
also be applied for grounding ASESs.
(2) A number of Dual Prestressed Rope Beam (DPRB)s applied for drive shafts,
Drive Beams or general solar racks either to support arrays of solar panels or
to transmit mechanical power.
(3) A number of Flexible Compressible Net of Ropes (FCNR)s applied for
supporting arrays of solar panels or light weight components.
(4) The Method of Automatic Rope Retracting Mechanism (MARRM) applied for
mechanical power transmission systems using ropes/ cables.
(5) A number of Twisting Oscillated Mechanical Power Transmission System
(TOMPTS)s applied for (floating/ grounding) single axis or dual axes solar
tracking systems. The TOMPTS has a good transmission efficiency for either
complex terrains of grounding solar energy systems or oscillations of floating
solar energy systems. It is also a good choice for transmitting mechanical
power through multiple arrays of trackers with dual axes. Thus, the number of
drive motors required for rotating multiple solar trackers are reduced
significantly.
(6) A number of Elevational Crossed Dual Axes Pivot Arm (ECDAPA)s applied for
rotating arrays of solar trackers.
[0288] In addition, if the solar energy systems are floating, the ASES also includes the
following structural components/methods which are included in the Flexible
Interlinked Wave Energy System (FIWES):
(1) A numberof Floating Posts orSPFPs (#8 in Figure 35) linking together via ropes/
cables/ Dual Prestressed Rope Beam (DPRB)s (#9). These ropes/ cables/ DPRBs
are arranged according to the System of Three-Dimensional Flexible Porous
Net of Multiple Floating Objects (3DFPNFO).
(2) A number of Stationed Floats (#3) secured to the Floating Posts or the
Surrounding Prestressed Floating Post (SPFP)s (#8). Shapes of the Stationed
Floats can be (annular) sphere or cylinder, composing of sectors. The
Stationed Floatscan alsobefilled up partiallywith water for damping.
(3) A number of Dampers (#1) being interlinked together via Linking Ropes (#10)
to form a Net of Dampers which is called the Flexible Porous Net of Wave
Absorbers/ Dampers (FPNWA/D). Particularly and similarly, the Inertial
Hydrodynamic Based Dampers (#1), which are dampers based on inertial
and/or hydrodynamic forces can also be interlinked together via Linking
Ropes (#10) to form the Flexible Porous Net of Wave Absorbers/ Inertial
Hydrodynamic Based Dampers (FPNWA/IHBD), can also be included. In
addition, Submerged Hanging Hollow Damper (SHHD)s, which are defined as
a specific type of Inertial Hydrodynamic Based Dampers, are possible to be
included as well.
(4) A number of (Vertical) Stationed Ropes/ Cables (#2) and Crossed Stationed
Ropes/ Cables (#11) hanging the number of Inertial Hydrodynamic Based
Dampers (#1), including the FPNWA/IHBD, or anchoring to ground. The
Crossed Stationed Ropes/Cables is also called the "Crossed Elements (Ropes/
Cables)" of the FPNWA/D or the "Net of Vertical Connections" of the System
of Three-Dimensional Flexible Porous Net of Multiple Floating Objects
(3DFPNFO).
(5) In addition, the following methods or solutions are also implemented:
(a) The Solution of Arch Waterway through Linked Floating Objects
(b) The Method of Applying Submerged Hanging Hollow Damper
[0289] It is notable that, thanks to its capability to work with long span of the DPRBs,
and thanks to other characteristics of its flexible structure, the ASES is also appropriate
to work on complex terrains with long spans. The 3DFPNFO can also be integrated in
grounding solar energy systems for strengthening the system structure by interlinking
posts together via ropes/ cables. In addition, arrays of solar panels are mounted to
ASES's structures, which are secured to Floating Posts or Surrounding Prestressed
Floating Post (SPFP)s.
1.41 The Adaptive Flexible Hybrid Energy Systems of Solar, Wave and Wind (HESSWW)
(Figure 35)
[0290] The HESSWW is an energy system that combines the energy system of wind,
the energy system of wave and the energy system of solar such as the ASES into a
single energy system based on flexible structure of the System of Three-Dimensional
Flexible Porous Net of Multiple Floating Objects (3DFPNFO).
[0291] The HESSWW is combined from the Adaptive Solar Energy System (ASES) and
the Flexible Interlinked Wave Energy System (FIWES) and wind turbines.
[0292] Thus, the HESSWW composes all the following components/ methods of the
FIWES arranged as follows:
(1) A System of Three-Dimensional Flexible Porous Net of Multiple Floating
Objects (3DFPNFO)
(2) A numberof Floating Posts orSurrounding Prestressed Floating Post (SPFPs (#8
in Figure 35) linking together via ropes/ cables/ Dual Prestressed Rope Beam
(DPRB)s (#9). These ropes/ cables/ DPRBs are arranged according to the
System of Three-Dimensional Flexible Porous Net of Multiple Floating Objects
(3DFPNFO).
(3) A number of Stationed Floats (#3) secured to the Floating Posts or the
Surrounding Prestressed Floating Post (SPFP)s (#8). Shapes of the Stationed
Floats can be (annular) sphere or cylinder, composing of sectors. The
Stationed Floats can also be filled up partially with water for damping.
(4) A number of Dampers (#1) being interlinked together via Linking Ropes (#10)
to form the Net of Dampers which is called the Flexible Porous Net of Wave
Absorbers/ Dampers (FPNWA/D). Particularly and similarly, the Inertial
Hydrodynamic Based Dampers (#1), which are dampers based on inertial
and/or hydrodynamic forces can also be interlinked together via Linking
Ropes (#10) to form the Flexible Porous Net of Wave Absorbers/ Inertial
Hydrodynamic Based Dampers (FPNWA/IHBD), can also be included. In
addition, Submerged Hanging Hollow Damper (SHHD)s, which are defined as
a specific type of Inertial Hydrodynamic Based Dampers, are possible to be
included as well.
(5) A number of (Vertical) Stationed Ropes/ Cables (#2) and Crossed Stationed
Ropes/ Cables (#11) hanging the number of Inertial Hydrodynamic Based
Dampers (#1), including the FPNWA/IHBD, or anchoring to ground. The
Crossed Stationed Ropes/Cables is also called the "Crossed Elements (Ropes/
Cables)" of the FPNWA/D or the "Net of Vertical Connections" of the System
of Three-Dimensional Flexible Porous Net of Multiple Floating Objects
(3DFPNFO).
(6) A number of Rotational Electric Generators (#7) or Linear Motion Electric
Generators integrated.
(7) A number of Sliding Structures, particularly the Vertical Sliding Floating
Structure (VSFS)s. The Sliding Structures, including the (VSFS)s, may and may
not comprise the Revolution Roller Guide (RRG). The Sliding Structures slide
along bodies of the Floating Posts or the SPFPs.
(8) A number of (Vertically) Slidable Floats or Liquid Kinetic Damping Float
(LKDF)s (#4) secured to the Sliding Structures for harvesting wave energy. The
(Vertically) Slidable Floats can be composed of sectors. They can also be filled
up partially with water, making them to be the LKDFs.
(9) A number of mechanical power transmission systems (#5) such as the
Bidirectional Linear to Rotational Transmission System (BLRTS)s transferring
energy harvested by the (Vertically) Slidable Floats/ Liquid Kinetic Damping
Float (LKDF)s (#4) to the Rotational Electric Generator (#7) or Linear Motion
Electric Generators.
(10) A number of Flexible Compressible Net of Ropes (FCNR)s can be included to
support light weight components such as electric cables.
(11) A numberof Floating Damping Wave Energy Convertor (FDWEC)s, which have
electronic controlled dampers or spring dampers integrated, can also be
included.
(12) A number of Stretchable Vertical Crossed Elements (SVCE)s might be
integrated.
(13) The Solution of Extended Gas Spring (SEGS) might also be implemented.
(14) In addition, the following methods or solutions are also included:
(a) The Solution of Arch Waterway through Linked Floating Objects
(b) The Method of Automatic Rope Retracting Mechanism (MARRM)
applied for mechanical power transmission systems using ropes/
cables.
(c) The Method of Controlled Variable Elevation (MCVE).
(d) The Method of Automatic Controlled Stationed Rope (MACSR).
(e) The Method of Applying Submerged Hanging Hollow Damper
(f) The Solution of Maximizing Differential Motions (SMDM).
[0293] In addition, the HESSWW also includes the following selected components/
methods of the ASES as follows:
(1) A number of Dual Prestressed Rope Beam (DPRB)s applied for drive shafts,
Drive Beams and supporting arrays of solar panels.
(2) A number of Flexible Compressible Net of Ropes (FCNR)s applied for
supporting arrays of solar panels
(3) A number of Twisting Oscillated Mechanical Power Transmission System
(TOMPTS)s applied for (floating/ grounding) single axis or dual axes solar
tracking systems. The TOMPTS has a good transmission efficiency for both
complex terrains of grounding solar energy systems or oscillations of floating
solar energy systems. It is also a good choice for transmitting mechanical
power through multiple arrays of trackers with dual axes. Thus, the number of
drive motors required for rotating multiple solar trackers are reduced
significantly.
(4) A number of Elevational Crossed Dual Axes Pivot Arm (ECDAPA)s applied for
arrays of solar trackers.
[0294] The HESSWW is developed to work either in reservoirs or offshore. In addition,
the HESSWW is also developed to work on either floating or even grounding bases.
For the grounding HESSWW, components related to floating such as floats or floating
dampers are excluded.
Claims (2)
1. An Adaptive Flexible Hybrid Energy Systems of Solar, Wave and Wind
(HESSWW) comprising:
• a flexible supporting structure comprising:
• an array of connected Wave Energy Converters (WEC) that harvest wave energy based
on vertical oscillations of waves;
• wherein the flexible supporting structure further comprises a Flexible Net of Non
Horizontal Connections (FNNHC) and a number of Flexible Net of Horizontal Connection
(FNHC)s; wherein:
* each FNNHC comprises a Flexible Pair of Crossed Elements (FPCE) linking each Wave
Energy Convertor (WEC) of the array to an adjacent WEC of the array;
* each WEC comprises a Structural Floating Post (SFP) floating at water surface level with
a submerged rope, cable or chain descending from the post with a wave absorbing damper
hung from the rope, cable or chain;
• each SFP being the primary support structure of each WEC and also suitable for
supporting solar panels above the water surface;
* each FPCE comprises Flexible Crossed Elements (FCE) that are either ropes, cables or
chains;
* wherein an FCE is strung between the lower ends of each SFP to the upper ends of each
adjacent SFP in the array; and an FCE is strung between the lower ends of each SFP to each
adjacent damper in the array;
* each Flexible Net of Horizontal Connections comprises a horizontal rope, cable, chain,
strung between the upper ends of each adjacent SFP in the array, the lower ends of each
adjacent SFP in the array and each adjacent damper in the array;
• and wherein each WEC:
• comprises a Vertically Slidable Float (VSF);
• wherein waves generate linearly oscillating differential motion between the VSF and its
associated SFP;
* and wherein energy of the linearly oscillated differential motions is transmitted to a
generator attached to the SFP wherein the generator converts mechanical energy to
electrical energy via gearing attached to the SFP and connected to the VSF; wherein said energy can alternatively be transmitted from the WECs via a Mechanical Power Transmission System (MPTS) to a number of other generators; • and wherein the SFP supports arrays of solar panels with or without single axis or dual axes solar tracking systems and wherein the Flexible Net of Horizontal Connections supports arrays of solar panels;
* and wherein the SFP supports wind turbines.
2. The HESSWW according to Claim 1 wherein the wind turbines and the WECs
may or may not share the same Mechanical Power Transmission System (MPTS).
Priority Applications (22)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2022218552A AU2022218552A1 (en) | 2022-08-17 | 2022-08-18 | Surrounding prestressed floating post |
AU2022218537A AU2022218537A1 (en) | 2022-08-17 | 2022-08-18 | System of three-dimensional flexible porous net of multiple floating objects |
AU2022218546A AU2022218546A1 (en) | 2022-08-17 | 2022-08-18 | Dual prestressed rope beam |
AU2022218550A AU2022218550A1 (en) | 2022-08-17 | 2022-08-18 | Flexible porous net of wave absorbers or dampers |
AU2022218538A AU2022218538B2 (en) | 2022-08-17 | 2022-08-18 | Net of non-horizontal connections |
AU2022218587A AU2022218587A1 (en) | 2022-08-17 | 2022-08-19 | Bidirectional linear to rotational transmission system |
AU2022218600A AU2022218600B2 (en) | 2022-08-17 | 2022-08-19 | Submerged hanging hollow damper |
AU2022218615A AU2022218615A1 (en) | 2022-08-17 | 2022-08-19 | Method of automatic controlled stationed rope |
AU2022218586A AU2022218586B2 (en) | 2022-08-17 | 2022-08-19 | Twisting oscillated mechanical power transmission system |
AU2022218602A AU2022218602A1 (en) | 2022-08-17 | 2022-08-19 | Method of applying submerged hanging hollow damper |
AU2022218609A AU2022218609A1 (en) | 2022-08-17 | 2022-08-19 | Method of automatic rope retracting mechanism |
AU2022218639A AU2022218639A1 (en) | 2022-08-17 | 2022-08-20 | Elevational crossed dual axes pivot arm |
AU2022218636A AU2022218636B2 (en) | 2022-08-17 | 2022-08-20 | Revolution roller guide |
AU2022218638A AU2022218638A1 (en) | 2022-08-17 | 2022-08-20 | Flexible compressible net of ropes |
AU2022218637A AU2022218637A1 (en) | 2022-08-17 | 2022-08-20 | Liquid kinetic damping float |
AU2022221376A AU2022221376A1 (en) | 2022-08-17 | 2022-08-22 | Flexible interlinked wave energy system for utility scale plants |
AU2022221375A AU2022221375A1 (en) | 2022-08-17 | 2022-08-22 | Solution of maximizing differential motions |
AU2022221577A AU2022221577A1 (en) | 2021-12-08 | 2022-08-27 | Vertical damping net for three dimensional interlinked floating objects |
AU2022221576A AU2022221576A1 (en) | 2021-12-08 | 2022-08-27 | Liquid damping tank for three dimensional interlinked floating objects |
AU2022221575A AU2022221575A1 (en) | 2022-08-17 | 2022-08-27 | Surface distributed damping system for three dimensional interlinked floating objects |
AU2022256200A AU2022256200A1 (en) | 2022-08-17 | 2022-10-21 | Dual floats based wave energy convertor |
AU2023282209A AU2023282209A1 (en) | 2022-08-17 | 2023-12-13 | Methods of automatic rope retracting mechanism |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2022902348A AU2022902348A0 (en) | 2022-08-17 | Adaptive flexible hybrid energy systems of solar, wave and wind for utility scale plants | |
AU2022902348 | 2022-08-17 |
Related Child Applications (21)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2022218546A Division AU2022218546A1 (en) | 2022-08-17 | 2022-08-18 | Dual prestressed rope beam |
AU2022218538A Division AU2022218538B2 (en) | 2022-08-17 | 2022-08-18 | Net of non-horizontal connections |
AU2022218537A Division AU2022218537A1 (en) | 2022-08-17 | 2022-08-18 | System of three-dimensional flexible porous net of multiple floating objects |
AU2022218552A Division AU2022218552A1 (en) | 2022-08-17 | 2022-08-18 | Surrounding prestressed floating post |
AU2022218550A Division AU2022218550A1 (en) | 2022-08-17 | 2022-08-18 | Flexible porous net of wave absorbers or dampers |
AU2022218587A Division AU2022218587A1 (en) | 2022-08-17 | 2022-08-19 | Bidirectional linear to rotational transmission system |
AU2022218600A Division AU2022218600B2 (en) | 2022-08-17 | 2022-08-19 | Submerged hanging hollow damper |
AU2022218615A Division AU2022218615A1 (en) | 2022-08-17 | 2022-08-19 | Method of automatic controlled stationed rope |
AU2022218602A Division AU2022218602A1 (en) | 2022-08-17 | 2022-08-19 | Method of applying submerged hanging hollow damper |
AU2022218586A Division AU2022218586B2 (en) | 2022-08-17 | 2022-08-19 | Twisting oscillated mechanical power transmission system |
AU2022218609A Division AU2022218609A1 (en) | 2022-08-17 | 2022-08-19 | Method of automatic rope retracting mechanism |
AU2022218637A Division AU2022218637A1 (en) | 2022-08-17 | 2022-08-20 | Liquid kinetic damping float |
AU2022218636A Division AU2022218636B2 (en) | 2022-08-17 | 2022-08-20 | Revolution roller guide |
AU2022218639A Division AU2022218639A1 (en) | 2022-08-17 | 2022-08-20 | Elevational crossed dual axes pivot arm |
AU2022218638A Division AU2022218638A1 (en) | 2022-08-17 | 2022-08-20 | Flexible compressible net of ropes |
AU2022221376A Division AU2022221376A1 (en) | 2022-08-17 | 2022-08-22 | Flexible interlinked wave energy system for utility scale plants |
AU2022221375A Division AU2022221375A1 (en) | 2022-08-17 | 2022-08-22 | Solution of maximizing differential motions |
AU2022221576A Division AU2022221576A1 (en) | 2021-12-08 | 2022-08-27 | Liquid damping tank for three dimensional interlinked floating objects |
AU2022221575A Division AU2022221575A1 (en) | 2022-08-17 | 2022-08-27 | Surface distributed damping system for three dimensional interlinked floating objects |
AU2022221577A Division AU2022221577A1 (en) | 2021-12-08 | 2022-08-27 | Vertical damping net for three dimensional interlinked floating objects |
AU2022256200A Division AU2022256200A1 (en) | 2022-08-17 | 2022-10-21 | Dual floats based wave energy convertor |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2022218536A1 AU2022218536A1 (en) | 2022-10-20 |
AU2022218536B2 true AU2022218536B2 (en) | 2023-09-28 |
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AU2022218536A Active AU2022218536B2 (en) | 2021-12-08 | 2022-08-17 | Adaptive flexible hybrid energy systems of solar, wave and wind for utility scale plants |
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CN117914247B (en) * | 2024-03-20 | 2024-05-14 | 上海海事大学 | Marine floating type comprehensive power generation device with paper folding configuration and power generation method thereof |
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US990596A (en) * | 1909-10-29 | 1911-04-25 | John Arnt Rosvold | Sea-anchor. |
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