CA2698650A1 - Ocean power electrical generator by mass oscillation - Google Patents
Ocean power electrical generator by mass oscillation Download PDFInfo
- Publication number
- CA2698650A1 CA2698650A1 CA2698650A CA2698650A CA2698650A1 CA 2698650 A1 CA2698650 A1 CA 2698650A1 CA 2698650 A CA2698650 A CA 2698650A CA 2698650 A CA2698650 A CA 2698650A CA 2698650 A1 CA2698650 A1 CA 2698650A1
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- Prior art keywords
- wpg
- power
- mcu
- wave
- generator
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Classifications
-
- 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
- F03B13/14—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 using wave energy
- F03B13/16—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 using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
- F03B13/20—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 using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" wherein both members, i.e. wom and rem are movable relative to the sea bed or shore
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- 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
- F05B2250/00—Geometry
- F05B2250/40—Movement of component
- F05B2250/44—Movement of component one element moving inside another one, e.g. wave-operated member (wom) moving inside another member (rem)
-
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
This invention for electrical power generation from Sea & Ocean waves.
A new principle of operation has been invented . This Novel principle is based on mass oscillation. As a result of this new principle a new design has been introduced This design leads to great advantages as described in the claims.
A new principle of operation has been invented . This Novel principle is based on mass oscillation. As a result of this new principle a new design has been introduced This design leads to great advantages as described in the claims.
Description
Description The general layout of the Wave Power Generator WPG is shown in figure -1-. The WPG is basically Mass-Spring-damper combination which known in so many application.
In this invention the electrical generator by which the electrical power generated resemble the damper.
To understand the operation let us look to fig-1 . Consider the event when wave moves from right to left, two wave components are affect on WPG body, these forces are as follow 1- Horizontal force Fh which is due to horizontal ( surface ) wave movement.
In this invention the electrical generator by which the electrical power generated resemble the damper.
To understand the operation let us look to fig-1 . Consider the event when wave moves from right to left, two wave components are affect on WPG body, these forces are as follow 1- Horizontal force Fh which is due to horizontal ( surface ) wave movement.
2-Vertical force Fo which is due to Oscillating wave column OWC wave movement.
when the wave strike the WPG both of above forces Fs & Fo combined to produce a torque rotating the WPG CCW. it is useful to say that when the wave strike the WPG , some of energy in Fs component transform to vertical component,i.e. Fo increases.
As a result of WPG CCW rotation, the Active Mass M start moving left down due to ( inclined surface) the instantaneous force acting of M Fm equal to Fm= a*m* sin (th) ........................ 1 a= Gravitational acceleration ( app= 9.8 N.m/ sec 2 ) m= active mass M weight in Kg.
th= instantaneous incline angle of WPG with respect to horizon the active mass keep moving in same direction at variable velocity V(t) . Until it finally stopped due to :
1- Spring force Fs which always try to push the active mass in opposite direction, the Fs is proportional to displacement ( d) of the active mass M.
so Fs= k*d , k is spring constant ...............2 2- damping force Fd which due to frictions of the active mass bearings with surface & other friction force(s) Ff & force due to electrical power generator Fg , both damping forces are proportional to active mass velocity v.
so Fd= z (V(t)) , z is damping factor ............................ 3 on other hand the wave get weaker as the wave moves along the WPG.
So the active mass eventually stopped then pushed to move in opposite direction due to spring force Fs so the WPG rotated clock wise CW, but the damping force again oppose the active mass movement in both strokes (ccw,&cw).
So the WPG keep oscillating at certain frequency.
For maximum power delivery the WPG must resonate with Ocean waves frequencies strike it. this is the key point of this invention.
The frequency at which the WPG resonate will depends on ( m,k,&z) .
In this invention m,& k are constant for a WPG . but to tune the WPG
frequency with Ocean wave we would change the damping factor z as requested that z =Z(t) , t is the time.
In normal operating state Z(t) set to keep the system in under damp state with variable frequency range .
But in real world the Ocean/sea wave variable height, variable frequency, variable wave length & variable speed.
To maximize the power within above variables , we have to consider the factors which categorized as follow :
1- At design level, these factors should be considered a-The shape & dimensions of WPG.
b-Weight & material of the active mass & weight of the Gross WPG.
c- Spring coefficient value, electrical generator rating & characteristics (rotor weight, no.of winding ....etc).
d-Location of each components within the WPG.
2-At operating level Output voltage & current of the electrical generator will be monitored by the ( Monitoring & control unit MCU) . By online reading of above output voltage & current the MCU can determine the instantaneous power generated . Once the MCU measure the power output it will change the value of magnetic excitation field B(t) of the electrical alternator/generator For maximum power generation.
Other functions of the MCU will be discussed in more details in next sections.
Description of components The components can be classified as follow 1- Mechanical Components The main component as follow 1.1 The active mass M is an important part of the WPG , the active mass play an important role in determining the power generation & the natural frequency of the WPG.
As shown in fig-1 the active mass moves in straight line , but to reduce the friction as possible & keep in in straight line , it should be loaded on proper bearing & proper bearing number. That bearing should be running through rails( channels) to keep it moves in strait line.
The friction of that bearings highly affect the efficiency of the system.
So regular ball bearing is quite suitable .
The active mass weight should be calculated at design level.
The material could any material that have density above water density 1000Kg/m3 ( the more density is better ), of course the lowest cost will be preferred * to ease the installation & mobilization the active mass should be sliced to proper sizes.
1.2 Springs The springs plays an important role in the principle of operation with active mass ,& electrical generator.
The spring factor k described before in equation -2 will be related to active mass weight M (Kg) according to equation below Wo"2= k/Me .................4 Me=M+ Mg, where Mg proportional to generator rotor or mass of coil of linear generator.
:Wo"2 is the square of maximum radian frequency of the system ,i.e the frequency with NO friction . Practically the maximum frequency would be less because we cannon avoid the friction . The value of k would be determined as design level.
1.3 Electrical Generator & its mechanism The electric generator has two very important functions , 1st converting the mechanical power captured from wave to electrical power& 2"d by controlling its rotating magnetic field Bi(t), the WPG tuned to proper frequency for maximum power delivery.
Because the active mass move linearly & for practical & cost reduction we can avoid the use of linear generator, In stead we can convert the linear motion to rotating as shown in fig-2.
A teethed Rubber belt or chain firmly connected to active mass so when the active mass moved the belt(s)/chain(s) will move too. This belt/chain run on two sprockets at the two end.
So that when the active mass moves right & left the sprockets rotate CCW,& CW.
At any of these two sprocket, the electrical generator coupled to it through gear box with proper speed ration determined as design level.
Regarding the gear box, the higher speed will be at generator side.
The rotating generator would be regular 3-Ph generator runs at' variable speed RPM'.
1.4 WPG Capsule (Shell ) The WPG capsule is the vessel which contains all other components The most important properties for it is - High resistance for corrosion for its out side which exposed to water.
-The materials weight should be as minimum as possible.
The dimensions & shape of the capsule would highly affect the WPG
efficiency. The top view of the WPG shown in fig-3 Electrical components The basic electrical layout is shown in fig-5.
2.1 Monitoring & Control Unit ( MCU) The MCU is the Sole & brain of the WPG, by which the maximum power generated by controlling the magnetic field of the generator Bi.
The MCU could a general purpose programmable controller & data acquisition available in the market.
In addition many other tasks executed by MCU which can be categorized as follow.
2.1.1 monitoring & measuring the power output online The MCU measure the power on line by continuously by measuring the output voltage & current of the generator after been rectified. In order to a- Maximum power delivery as described in above or as in section 3.0 WPG tuning.
b- in case of the output power exceed the maximum allowable average power of the generator ( due to very high wave power strike the WPG) , MCU will manage to reduce the power output by pushing the system away from the maximum power generation by mean of adjusting the magnetic excitation field Bi of generator to reduce the power, but the MCU continuously monitors the output power to keep it near the maximum allowable power as possible.
c- In case of zero power delivered to final destination such as due to power cable disconnection, the MCU will cease the power generation electrically by pushing the system to be over damped by set Bi(t) to maximum value.
d- As an option if cable disconnection combined with very high wave so that action described in -c not enough MCU will stop the active mass oscillation mechanically.
2.1.2 Alarming MCU can send alarm signal such as flash or by wireless device(s) available . Alarming should be necessary for the cases b,c,& d described in section 2.1.1.
2.1.3 Input Data The input data needed by MCU is the setting parameter for MCU (default setting), program by which the maximum power delivered, update data or even debugging.
Such setting parameter in necessary for calculation of exact excitation magnetic field Bi , to attain the maximum power delivery.
Also that data tell the MCU how to make the decision in sec.2.1.1 & 2.1.2 2.1.4 Output data We can suggest many output data such as the current power, alarms described above .............etc 2.2 The generator & rectifier The electrical generator is a classical 3-phase alternator & its output will be rectified as shown in fig-5 .
Another function of the rectifier in addition to AC/DC conversion is to send the sensing signal Vs to be processed by MCU , by this signal the MCU detect the current frequency of the active mass .
2.3 Inverter & battery The final output preferred -for practical reasons- to be AC voltage ( 220-110 V)/(50-60 Hz) to be used in home appliances & to reduce the copper loss which is less in higher voltage as compared if the output directly taken out of the battery.
The battery shown in fig-5 is NOT a storage battery, instead it is a basic component of the electrical system.
when the wave strike the WPG both of above forces Fs & Fo combined to produce a torque rotating the WPG CCW. it is useful to say that when the wave strike the WPG , some of energy in Fs component transform to vertical component,i.e. Fo increases.
As a result of WPG CCW rotation, the Active Mass M start moving left down due to ( inclined surface) the instantaneous force acting of M Fm equal to Fm= a*m* sin (th) ........................ 1 a= Gravitational acceleration ( app= 9.8 N.m/ sec 2 ) m= active mass M weight in Kg.
th= instantaneous incline angle of WPG with respect to horizon the active mass keep moving in same direction at variable velocity V(t) . Until it finally stopped due to :
1- Spring force Fs which always try to push the active mass in opposite direction, the Fs is proportional to displacement ( d) of the active mass M.
so Fs= k*d , k is spring constant ...............2 2- damping force Fd which due to frictions of the active mass bearings with surface & other friction force(s) Ff & force due to electrical power generator Fg , both damping forces are proportional to active mass velocity v.
so Fd= z (V(t)) , z is damping factor ............................ 3 on other hand the wave get weaker as the wave moves along the WPG.
So the active mass eventually stopped then pushed to move in opposite direction due to spring force Fs so the WPG rotated clock wise CW, but the damping force again oppose the active mass movement in both strokes (ccw,&cw).
So the WPG keep oscillating at certain frequency.
For maximum power delivery the WPG must resonate with Ocean waves frequencies strike it. this is the key point of this invention.
The frequency at which the WPG resonate will depends on ( m,k,&z) .
In this invention m,& k are constant for a WPG . but to tune the WPG
frequency with Ocean wave we would change the damping factor z as requested that z =Z(t) , t is the time.
In normal operating state Z(t) set to keep the system in under damp state with variable frequency range .
But in real world the Ocean/sea wave variable height, variable frequency, variable wave length & variable speed.
To maximize the power within above variables , we have to consider the factors which categorized as follow :
1- At design level, these factors should be considered a-The shape & dimensions of WPG.
b-Weight & material of the active mass & weight of the Gross WPG.
c- Spring coefficient value, electrical generator rating & characteristics (rotor weight, no.of winding ....etc).
d-Location of each components within the WPG.
2-At operating level Output voltage & current of the electrical generator will be monitored by the ( Monitoring & control unit MCU) . By online reading of above output voltage & current the MCU can determine the instantaneous power generated . Once the MCU measure the power output it will change the value of magnetic excitation field B(t) of the electrical alternator/generator For maximum power generation.
Other functions of the MCU will be discussed in more details in next sections.
Description of components The components can be classified as follow 1- Mechanical Components The main component as follow 1.1 The active mass M is an important part of the WPG , the active mass play an important role in determining the power generation & the natural frequency of the WPG.
As shown in fig-1 the active mass moves in straight line , but to reduce the friction as possible & keep in in straight line , it should be loaded on proper bearing & proper bearing number. That bearing should be running through rails( channels) to keep it moves in strait line.
The friction of that bearings highly affect the efficiency of the system.
So regular ball bearing is quite suitable .
The active mass weight should be calculated at design level.
The material could any material that have density above water density 1000Kg/m3 ( the more density is better ), of course the lowest cost will be preferred * to ease the installation & mobilization the active mass should be sliced to proper sizes.
1.2 Springs The springs plays an important role in the principle of operation with active mass ,& electrical generator.
The spring factor k described before in equation -2 will be related to active mass weight M (Kg) according to equation below Wo"2= k/Me .................4 Me=M+ Mg, where Mg proportional to generator rotor or mass of coil of linear generator.
:Wo"2 is the square of maximum radian frequency of the system ,i.e the frequency with NO friction . Practically the maximum frequency would be less because we cannon avoid the friction . The value of k would be determined as design level.
1.3 Electrical Generator & its mechanism The electric generator has two very important functions , 1st converting the mechanical power captured from wave to electrical power& 2"d by controlling its rotating magnetic field Bi(t), the WPG tuned to proper frequency for maximum power delivery.
Because the active mass move linearly & for practical & cost reduction we can avoid the use of linear generator, In stead we can convert the linear motion to rotating as shown in fig-2.
A teethed Rubber belt or chain firmly connected to active mass so when the active mass moved the belt(s)/chain(s) will move too. This belt/chain run on two sprockets at the two end.
So that when the active mass moves right & left the sprockets rotate CCW,& CW.
At any of these two sprocket, the electrical generator coupled to it through gear box with proper speed ration determined as design level.
Regarding the gear box, the higher speed will be at generator side.
The rotating generator would be regular 3-Ph generator runs at' variable speed RPM'.
1.4 WPG Capsule (Shell ) The WPG capsule is the vessel which contains all other components The most important properties for it is - High resistance for corrosion for its out side which exposed to water.
-The materials weight should be as minimum as possible.
The dimensions & shape of the capsule would highly affect the WPG
efficiency. The top view of the WPG shown in fig-3 Electrical components The basic electrical layout is shown in fig-5.
2.1 Monitoring & Control Unit ( MCU) The MCU is the Sole & brain of the WPG, by which the maximum power generated by controlling the magnetic field of the generator Bi.
The MCU could a general purpose programmable controller & data acquisition available in the market.
In addition many other tasks executed by MCU which can be categorized as follow.
2.1.1 monitoring & measuring the power output online The MCU measure the power on line by continuously by measuring the output voltage & current of the generator after been rectified. In order to a- Maximum power delivery as described in above or as in section 3.0 WPG tuning.
b- in case of the output power exceed the maximum allowable average power of the generator ( due to very high wave power strike the WPG) , MCU will manage to reduce the power output by pushing the system away from the maximum power generation by mean of adjusting the magnetic excitation field Bi of generator to reduce the power, but the MCU continuously monitors the output power to keep it near the maximum allowable power as possible.
c- In case of zero power delivered to final destination such as due to power cable disconnection, the MCU will cease the power generation electrically by pushing the system to be over damped by set Bi(t) to maximum value.
d- As an option if cable disconnection combined with very high wave so that action described in -c not enough MCU will stop the active mass oscillation mechanically.
2.1.2 Alarming MCU can send alarm signal such as flash or by wireless device(s) available . Alarming should be necessary for the cases b,c,& d described in section 2.1.1.
2.1.3 Input Data The input data needed by MCU is the setting parameter for MCU (default setting), program by which the maximum power delivered, update data or even debugging.
Such setting parameter in necessary for calculation of exact excitation magnetic field Bi , to attain the maximum power delivery.
Also that data tell the MCU how to make the decision in sec.2.1.1 & 2.1.2 2.1.4 Output data We can suggest many output data such as the current power, alarms described above .............etc 2.2 The generator & rectifier The electrical generator is a classical 3-phase alternator & its output will be rectified as shown in fig-5 .
Another function of the rectifier in addition to AC/DC conversion is to send the sensing signal Vs to be processed by MCU , by this signal the MCU detect the current frequency of the active mass .
2.3 Inverter & battery The final output preferred -for practical reasons- to be AC voltage ( 220-110 V)/(50-60 Hz) to be used in home appliances & to reduce the copper loss which is less in higher voltage as compared if the output directly taken out of the battery.
The battery shown in fig-5 is NOT a storage battery, instead it is a basic component of the electrical system.
3.0 WPG Tuning Let us return to equation -4 above where the natural radian frequency Wo= 'l(k/Me), zero damping force But when the damping forces considered the instantaneous frequency Wi would be approximately :
Wi= 4 [ (K/Me)- ((Ka*Bi^2 / 2Me+ C)^2) ] ...............5 by solving a 2nd order differential equation in under damping state.
Ka= a constant depending on alternator factor such as total length of conductor exposed to magnetic field...... etc, gearbox ratio,& load current (I) shown in fig-5.
C= is a constant proportional to the friction forces in the system.
So we can set the WPG natural frequency for maximum power delivery by changing the generator/alternator excitation field Bi as shown in equation -5.
So the frequency Wi always less than Wo , but should be greater than zero to keep the system in under damp state, if we increased the Bi so that the value in bracket under square root become negative then the system get in over damped state which should be avoided in normal operation except the case mentioned in section 2.1.1-C.
For practical purpose we can choose Wo= II , then F0= 0.5 Hz So the maximum WPG natural frequency will be always less than 0.5 Hz Important Comments The invention described so far is the basic design just as the prove of concept.
Many improvements/options can be done, for example using a linear generator would increase the efficiency due to avoidance of friction in gear box described in section 1.3.
Also we can improve the power efficiency if we design the WPG according to some practical experiments' or by computer simulation .
Offshore design The invention described so far seem to be designed for Onshore .
However we can build the Offshore ocean power generator based on the onshore WPGs as shown in fig-4.
The main differences are as follow 1- A centre Buoy needed to connect the WPGs .
2- At least three WPG needed to compose the Offshore design .
3- The WPGs would swinging independently at frequencies explained before, each of WPG hanged by two powerful joints & rods as shown in fig.4 4-The mooring would by through the central buoy.
Wi= 4 [ (K/Me)- ((Ka*Bi^2 / 2Me+ C)^2) ] ...............5 by solving a 2nd order differential equation in under damping state.
Ka= a constant depending on alternator factor such as total length of conductor exposed to magnetic field...... etc, gearbox ratio,& load current (I) shown in fig-5.
C= is a constant proportional to the friction forces in the system.
So we can set the WPG natural frequency for maximum power delivery by changing the generator/alternator excitation field Bi as shown in equation -5.
So the frequency Wi always less than Wo , but should be greater than zero to keep the system in under damp state, if we increased the Bi so that the value in bracket under square root become negative then the system get in over damped state which should be avoided in normal operation except the case mentioned in section 2.1.1-C.
For practical purpose we can choose Wo= II , then F0= 0.5 Hz So the maximum WPG natural frequency will be always less than 0.5 Hz Important Comments The invention described so far is the basic design just as the prove of concept.
Many improvements/options can be done, for example using a linear generator would increase the efficiency due to avoidance of friction in gear box described in section 1.3.
Also we can improve the power efficiency if we design the WPG according to some practical experiments' or by computer simulation .
Offshore design The invention described so far seem to be designed for Onshore .
However we can build the Offshore ocean power generator based on the onshore WPGs as shown in fig-4.
The main differences are as follow 1- A centre Buoy needed to connect the WPGs .
2- At least three WPG needed to compose the Offshore design .
3- The WPGs would swinging independently at frequencies explained before, each of WPG hanged by two powerful joints & rods as shown in fig.4 4-The mooring would by through the central buoy.
5- The central buoy will contain the Storage battery & the central inverter at higher voltage (in Kv) because the longer distance & higher power.
6- The output AC voltage cable should be routed under the central buoy at proper depth.
Figures & components Fig-1- : The basic view of the wave power Generator WPG
1- The active mass 2- The Springs 3-Spring channel ( rod).
4-Upper active mass bearings.
5-Lower active mass bearings.
6-Lower active mass bearings channel/ rail.
Figures & components Fig-1- : The basic view of the wave power Generator WPG
1- The active mass 2- The Springs 3-Spring channel ( rod).
4-Upper active mass bearings.
5-Lower active mass bearings.
6-Lower active mass bearings channel/ rail.
7-Upper active mass bearings channel/rail.
8- Linear generator or generator mechanism shown in fig-2.
9- Magnetic excitation coil in case of using the linear generator.
10- Electrical and electronic unit shown in fig-5.
11- Flexible output power cable.
12- The antenna.
13- The service cover for maintenance & installation.
14- Front buoy.
15- Rear buoy.
16- Mooring.
17- Emergency flashing light.
18- WPG capsule/ shell.
Fig-2 : Generator mechanism 1- Teethed belt(s) or metallic chain(s).
2-Sprocket with gearbox coupling.
3-Sproket.
4- Sprocket to gearbox coupling.
5- Gearbox.
6- 3-phase alternator.
7- 3-phase output cable shown in fig.5.
8-Magnetic excitation cable of the 3-phase alternator shown in fig.5.
9- The active mass.
10.Springs.
Fig-3- Top view of the WPG ( Onshore design) 1- WPG Capsule ( Shell) .
2-Wave reflector.
3-Output cable gland.
4-Output AC- voltage flexible cable.
5- Removable service cover for maintenance & installation.
6- Antenna.
Fig-4 : Offshore design Wave Power Generator 1- Central buoy & the container for Storage battery & inverter.
2.1,2.2,&2,3 Swinging joints & bearings of the 3-WPG(s).
3.1,3.2,& 3.3 Connection joints & bearings by which the WPG(s) connected to central buoy through out the connection rods ( items 7.1,7.2,&7.3).
4.1,4.2,&4.3 the Onshore WPG(s) shown in figure-1.
5.1,5.2,5.3 the flexible cables deliver the DC current produced by each WPG to storage battery inside the central buoy.
6.1,6.2,&6.3 wave reflector of the WPG(s).
7.1,7.2,& 7.3 a connection rods which connect the swinging joints and connection joints described above.
Fig-5 : Electrical & Electronic Unit 1- Electrical 3-phase alternator.
2- Three phase AC/DC rectifier.
3- DC/AC inverter for Onshore design.
4- Monitoring & Control Unit MCU.
5-Wireless communication unit.
6- Antenna.
7- AC voltage output cable gland for Onshore design.
8- AC voltage output flexible cable shown fig-1 & fig-3.
9- DC voltage output cable gland for Offshore design.
10- DC voltage output flexible cable shown in fig-4.
11- Excitation field coil of the alternator shown in fig-2.
Fig-2 : Generator mechanism 1- Teethed belt(s) or metallic chain(s).
2-Sprocket with gearbox coupling.
3-Sproket.
4- Sprocket to gearbox coupling.
5- Gearbox.
6- 3-phase alternator.
7- 3-phase output cable shown in fig.5.
8-Magnetic excitation cable of the 3-phase alternator shown in fig.5.
9- The active mass.
10.Springs.
Fig-3- Top view of the WPG ( Onshore design) 1- WPG Capsule ( Shell) .
2-Wave reflector.
3-Output cable gland.
4-Output AC- voltage flexible cable.
5- Removable service cover for maintenance & installation.
6- Antenna.
Fig-4 : Offshore design Wave Power Generator 1- Central buoy & the container for Storage battery & inverter.
2.1,2.2,&2,3 Swinging joints & bearings of the 3-WPG(s).
3.1,3.2,& 3.3 Connection joints & bearings by which the WPG(s) connected to central buoy through out the connection rods ( items 7.1,7.2,&7.3).
4.1,4.2,&4.3 the Onshore WPG(s) shown in figure-1.
5.1,5.2,5.3 the flexible cables deliver the DC current produced by each WPG to storage battery inside the central buoy.
6.1,6.2,&6.3 wave reflector of the WPG(s).
7.1,7.2,& 7.3 a connection rods which connect the swinging joints and connection joints described above.
Fig-5 : Electrical & Electronic Unit 1- Electrical 3-phase alternator.
2- Three phase AC/DC rectifier.
3- DC/AC inverter for Onshore design.
4- Monitoring & Control Unit MCU.
5-Wireless communication unit.
6- Antenna.
7- AC voltage output cable gland for Onshore design.
8- AC voltage output flexible cable shown fig-1 & fig-3.
9- DC voltage output cable gland for Offshore design.
10- DC voltage output flexible cable shown in fig-4.
11- Excitation field coil of the alternator shown in fig-2.
Claims (19)
1- The principle of operation ( the oscillating mass ) for this invention is quite novel. By this principle absolutely maximum ocean/sea electrical power will be delivered.
2- In this invention the power would be generated with fairly at any wave level specially the minimum level.
3-In this invention the WPG capture the power of both of wave components ( surface moving & Oscillating wave column ).
4-The WPG in this invention has NO moveable part exposed to Ocean/Sea water or other weather aggressive.
Except the case of Offshore where joints for WPGs swinging.
Except the case of Offshore where joints for WPGs swinging.
5- This invention need very less special made -costly- component.( the only special component is WPG capsule), that will ease & accelerate the manufacturing and highly reduce the cost.
6-This invention is very easy to mobilize & need very less installation time relatively specially for low power range ( in Kws ) & for Onshore since the WPG can be considered as conventional boat or barge.
7- This invention need no construction works such as concrete structure or under water works ..............etc.
8- This invention use very low cost electrical & electronic components for power management & other tasks described in MCU description. The MCU could a general purpose programmable controller & data acquisition.
9- Due to claim -8, an intelligent algorithmic program would be deployed This algorithmic design perform the function described in the MCU
section.
section.
10- Due to claim 8,&9 the system (WPG) can be update or even debug on and the data can be sent online & if a proper communication device is attached to MCU.
11- Due to claims 4,5,6,7,&8 the initial and the installation cost are very low relative to other Ocean power technologies.
12- Due to claims 1,2,& 3 the running cost is too low.
13- Due to claims 8,9,&10 this design has a great potential for future development, for example we can develop new algorithm(s) & re-program the WPG online.
14-The invention can be work as offshore or onshore with differences described earlier. But for the case on Offshore , claim-4 no longer valid.
15- Due to claim 4 the invention has minimum ecology impact.
16- Due to claims 8,&9 the invention can manage to protect itself in case of emergencies as described earlier.
17- Due to claims 8,&9 the invention can send or receive variety of data and commands & execute it online.
18- Due to claims 15,16,&17 the invention is too reliable .
19- Due to claim 4 the WPG is easy to maintained, the maintenance will be similar to maintaining of any regular barge or ship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2698650A CA2698650A1 (en) | 2010-04-06 | 2010-04-06 | Ocean power electrical generator by mass oscillation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2698650A CA2698650A1 (en) | 2010-04-06 | 2010-04-06 | Ocean power electrical generator by mass oscillation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2698650A1 true CA2698650A1 (en) | 2011-10-06 |
Family
ID=44763646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2698650A Abandoned CA2698650A1 (en) | 2010-04-06 | 2010-04-06 | Ocean power electrical generator by mass oscillation |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2698650A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181701A1 (en) * | 2012-06-05 | 2013-12-12 | Ddnt Consultants Australia Pty Ltd | Wave power generation system and method |
| CN107514331A (en) * | 2017-08-16 | 2017-12-26 | 海南大学 | One kind is without axiation wave energy generating set |
| CN107587970A (en) * | 2017-08-16 | 2018-01-16 | 海南大学 | A kind of wave energy generating set and its circuit |
| CN111322191A (en) * | 2019-05-22 | 2020-06-23 | 北京纳米能源与系统研究所 | Ocean energy development platform |
| CN111400810A (en) * | 2020-03-31 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Design method for reinforcing unstable slope of operation line by micro-piles |
| CN114483423A (en) * | 2022-01-29 | 2022-05-13 | 中国海洋大学 | Bistable friction electrification wave power generation device |
-
2010
- 2010-04-06 CA CA2698650A patent/CA2698650A1/en not_active Abandoned
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181701A1 (en) * | 2012-06-05 | 2013-12-12 | Ddnt Consultants Australia Pty Ltd | Wave power generation system and method |
| US10082128B2 (en) | 2012-06-05 | 2018-09-25 | Ddnt Consultants Australia Pty Ltd. | Wave power generation system and method |
| CN107514331A (en) * | 2017-08-16 | 2017-12-26 | 海南大学 | One kind is without axiation wave energy generating set |
| CN107587970A (en) * | 2017-08-16 | 2018-01-16 | 海南大学 | A kind of wave energy generating set and its circuit |
| CN111322191A (en) * | 2019-05-22 | 2020-06-23 | 北京纳米能源与系统研究所 | Ocean energy development platform |
| CN111400810A (en) * | 2020-03-31 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Design method for reinforcing unstable slope of operation line by micro-piles |
| CN114483423A (en) * | 2022-01-29 | 2022-05-13 | 中国海洋大学 | Bistable friction electrification wave power generation device |
| CN114483423B (en) * | 2022-01-29 | 2022-10-18 | 中国海洋大学 | Bistable friction electrification wave power generation device |
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