JP6091111B2 - Wind power generator - Google Patents

Description

  The present invention relates to an outer rotor type generator that can be suitably used, for example, as a wind power generator. More specifically, the present invention relates to an outer rotor type generator having a structure in which a stator and a rotor can be easily attached to a columnar or pipe-shaped external structure such as an outdoor iron pole or street light column.

Since natural energy such as wind power, sunlight, or geothermal energy is clean energy that does not generate waste such as carbon dioxide and NO _x , recently it has been reconsidered to be used as electric power more than before.
Among these, in the wind power generation field, for example, various types of dedicated generators have been proposed (for example, Patent Document 1). The basic configuration is that a permanent magnet consisting of N poles and S poles is concentrically arranged on the outer periphery of an annular stator composed of a plurality of iron cores and windings, and a blade is fixed to the outer periphery of the rotor. The blade is rotated by wind power to extract electric power from the stator.

  In this case, the rotation axis can be arranged in any direction, either vertically or horizontally. For example, the generator can be fixed directly to a pillar-shaped external structure such as a steel pillar or a street light standing vertically from the ground. However, if the stator and the rotor are endless, it is extremely difficult to attach to these columnar bodies.

  Therefore, in the prior art, the stator is divided into a plurality of parts corresponding to the outer diameter of the columnar body in advance and assembled in a ring around the columnar body on site. In this case, since the stator is stationary, the attaching operation to the columnar external structure is relatively easy.

  However, the rotor itself rotates during power generation, and the weight of the blade fixed to the rotor is added as a thrust load to the columnar external structure. If it does so, the bearing structure of a rotor will become complicated and fixation to a columnar external structure will not be as easy as a stator (for example, patent documents 2, 3).

  Therefore, it is necessary to divide the rotor into a rotatable bearing structure.However, there is no wind power generator divided into the rotor as described above, and it is difficult to mount it on the columnar external structure. It was.

Japanese Utility Model Publication No. 62-168772 (FIG. 1) JP 2003-65335 A JP 2002-81438 A (Claim 1, FIG. 6)

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an outer rotor type generator that solves the above-described problems, facilitates the assembly work of the rotor to the central shaft, and improves the bearing structure. Moreover, it aims at provision of the outer rotor type generator for wind power generation as the specific use.

In order to solve the above problems, a wind power generator according to claim 1 of the present application is divided into a plurality of divided power generation unit units that are internal stators including coils and an external rotor including permanent magnets . A generator in which a plurality of power generation unit units are connected to each other in a ring shape and installed in a columnar external structure as a complete internal stator and a complete external rotor, the internal stator being a base end portion The outer rotor is extended in a radial direction from the side wall, the longitudinal section is formed in a substantially U-shape, and is rotatably installed outside the inner stator via a gap, Furthermore, the wind turbine generator is characterized in that a windmill blade is installed outside the external rotor.

The generator for wind power generation according to claim 2 of the present application is characterized in that, in the invention described in claim 1, the external rotor is a bearing unit, and is configured to float with respect to the internal stator. It is a generator for wind power generation according to claim 1.

The wind power generator according to claim 3 of the present application is characterized in that, in the invention described in claim 1, the external rotor is a positioning magnet and is configured to float with respect to the internal stator. It is a generator for wind power generation according to claim 1.

  Since the outer rotor type generator of the present invention can be installed in an existing external structure such as a columnar structure, land acquisition / installation costs for setting up a column again are unnecessary. In addition, the following effects can be achieved.

  In the first invention, not only the internal stator of the generator but also the external rotor is divided into 3 to 24 parts and assembled to the columnar body, so that the columnar body is, for example, an outdoor light column, a road sign column In the case of a columnar external structure such as an outdoor speaker support, maintenance such as carrying in to the site, assembly on site or replacement of parts is much easier, and the number of assembly steps can be greatly reduced.

  In the second invention, in addition to the structure of the first invention, the external rotor has a floating structure adopting a so-called linear motor system with respect to the internal stator by a positioning magnet. In addition to the effects, assembly errors and the like can be absorbed. Further, since it is not necessary to directly support the rotation axis of the windmill so as to be rotatable like a conventional bearing, the cutout rotational speed of the windmill can be set high.

  Further, since there is no resistance due to the bearings of the internal stator and the external rotor, wind power generation cut-in can be started from a low wind speed, and the number of rotations until cut-out can be set widely.

  The third invention has the effects of the first and second inventions, and is a columnar body whose central axis is long in the vertical direction, and a plurality of the outer rotor type generators are mounted on the columnar body at a predetermined interval. As a result, the amount of power generation also becomes multiple, and when the pair of external rotors are connected to each other in the axial direction, the rotation of the external rotor is stabilized.

  Since the 4th invention fixes the blade for wind power generation to the external rotor of the 3rd invention, the wind power generator provided with the effect of the 1st-the 3rd invention can be obtained.

  In the fifth invention, the outer rotor type generator of the first invention can be fixed to a columnar external structure such as an outdoor lamp post, a road sign post, an outdoor speaker post and the like, and the generated electric power can be utilized as a power source thereof. Of course, it is easy to install the generator on the columnar external structure described above, and basically the function of each columnar external structure can be maintained without the need for conventional power transmission equipment. .

  In addition, by installing on outdoor lights of columnar external structures, power poles on the side of railway tracks, bridges, road signs, outdoor speakers, etc. and making it a wide area network, the instability of power generation, which is the biggest weak point in wind power generation, is reduced. In addition to minimization, the generated power can be transmitted to the central control room as a signal to various transportation facilities, administrative agencies, various transportation agencies, administrative agencies, and traffic, disaster prevention radio, weather, etc. Information, etc. can be reported, controlled and warned.

  Moreover, since the columnar external structure is a structure having a high altitude outdoors, it also has an effect as a lightning rod.

  Finally, it can be expected to be used as an emergency power source in the affected areas.

It is a perspective view of a part of rotor and stator part of an outer rotor type generator concerning the 1st invention. 2A is a plan view of a part of the rotor and the stator portion of FIG. 1, and FIG. 2B is a front view thereof. 3 (a) is a longitudinal sectional view of the rotor and stator portion of FIG. 2 (a) cut along the line AA, and FIG. 3 (b) is a connecting portion with an adjacent power generation portion unit. FIG. 4A is a partial longitudinal sectional view of an example in which the rotor bearing structure of the outer rotor type generator according to the first invention is a floating type, and FIG. 4B is the bearing structure of FIG. 4A. It is the expanded cross-sectional view cut | disconnected by the BB line | wire. FIG. 5A is a longitudinal sectional view of the outer rotor type generator according to the third and fourth inventions, and FIG. 5B is a state in which the upper generator in FIG. 5A is cut along the CC line. FIG. 6 (a) is a half sectional view of an outer rotor type generator according to the fifth invention of a type different from the generators of FIGS. 4 and 5, and FIG. 6 (b) is a half showing a connecting structure of rotors. It is sectional drawing. It is a front view of the example which attached the generator of FIG. 5 to the support | pillar of a traffic sign. It is a front view of the example which attached the generator of FIG. 5 to the support | pillar of a street light. It is a front view of the example which attached the generator of FIG. 5 to the support | pillar for disaster prevention broadcasting facilities.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A mode for carrying out the present invention will be described below with reference to the drawings of one embodiment.
[Embodiment 1]
First, the 1st invention among the outer rotor type generators concerning the present invention is explained with reference to Drawing 1-3.

  FIG. 1 is a perspective view of a part of an internal stator (stator) 1 and an external rotor (rotor) 2 constituting the outer rotor type generator according to the first invention, and FIG. 2 (a) is a partial plan view thereof. 2 (b) is a front view thereof, FIG. 3 (a) is a longitudinal sectional view of the stator 1 and the rotor 2 portion of FIG. 2 (a) cut along line AA, FIG. FIG. 4B is a partial cross-sectional view of the connecting portion 3 with the adjacent stator 1.

  The constituent member of the outer rotor type generator according to the present invention shown in FIG. 1 includes a stator 1 and a rotor 2 assembled concentrically, and is divided into three equal parts with a central angle θ of 120 °. In the present invention, a configuration in which the stator 1 and the rotor 2 are equally divided with the axis O as the center is referred to as a “power generation partial unit 10” for convenience. That is, in the outer rotor type generator of the present embodiment, the end portions of the three power generation partial units 10, 10, 10 are connected in a ring shape (endless shape), and a complete stator and rotor It becomes.

  In the generator of the present embodiment, the stator 1 and the rotor 2 are divided into three equal parts with a central angle θ of 120 ° as shown in the figure, but the columnar external structure to which the generator of the present invention is to be attached. It is preferable that the stator 1 is divided into 2 to 18 equal divisions and the rotor 2 is divided into 3 to 24 equal divisions according to the outer diameter of the body and other design conditions.

  The power generation unit 10 is a columnar or pipe-shaped external structure (hereinafter referred to as “P” for these columnar bodies) such as outdoor lights, road signs, outdoor speakers, etc., in addition to a shaft and a hollow shaft (not shown). It can also be fixed to the outer peripheral surface. Although the specific outer diameter of these columnar external structures P is not specifically limited, Usually, it is around 200 mm.

  As shown in FIG. 1, the stator 1 has an iron core portion 1b extending in the radial direction from the side wall of the thick base end portion 1a, and the iron core portion 1b has a structure as shown in FIG. Six stator 1 yokes 1d are formed, and coil windings 1c are wound around the respective yoke 1d portions.

  On the other hand, as shown in FIG. 1, the rotor 2 is formed in a plate-like body having three surfaces including an upper surface 2 a, a side surface 2 b, and a lower surface 2 c and having a substantially “U” cross section. Further, as shown in FIGS. 1 and 3 (a), the N-pole permanent magnet 2d and the S-pole permanent magnet 2e are fixed to the back surfaces of the upper surface 2a and the lower surface 2c so as to face each other. ing.

  Further, as shown in FIG. 2A, eight permanent magnets 2d and 2e of the rotor 2 are equally arranged in the iron core portion 1b with respect to one power generation partial unit 10, and six coil windings 1c are arranged. .. Are arranged in a shifted positional relationship as shown in the figure.

  Therefore, in the complete stator 1 assembled concentrically by connecting the ends of the three power generation partial units 10, 10, 10, there are 18 (6 × 3 = 18) coils on the outer periphery of the shaft P. Windings 1c, 1c,... Exist, and the coil windings 1c are connected by a wiring 1e.

  On the other hand, the rotor 2 includes 24 N-pole permanent magnets 2d on the upper surface 2d and 24 S-pole permanent magnets 2e on the lower surface 2c with the coil windings 1c, 1c. Are evenly arranged and fixed. The detailed dimensions of the stator 1 and the rotor 2 must be designed so that the maximum power generation capacity can be exerted, but these can be appropriately determined by a finite element method (FEM) or the like conventionally performed. it can.

  The stator 1 and the rotor 2 are assembled by being connected in a ring shape so that the rotor 2 can rotate relative to the stator 1 in one columnar body or hollow body P. An example of this is shown in FIG. 3, in which FIG. 3 (a) shows a case where the power generation unit 10 of FIG. 2 is connected in an annular shape to the outer peripheral surface of a vertically arranged hollow shaft P. It is a longitudinal cross-sectional view of the assembled state.

  In this case, the connecting portion 3 between the adjacent power generation partial units 10 is represented as a simple flat surface in the rotor 2 and the stator 1 shown in FIGS. 1 and 2 described above. ) And the enlarged cross sectional view of FIG. 4B, the connecting portion 3 is formed in a hook shape in which the end portions of the stators 1 and the rotors 2 are engaged with each other. And are connected in an annular shape with suitable fasteners.

  3A, reference numeral 4 in the drawing denotes a positioning flange ring for the stator 1, which is fixed to the hollow shaft P by appropriate fastening means such as bolts and nuts (not shown). The part 1 a is fixed to the upper surface 4 a of the positioning flange ring 4. Therefore, the stator 1 can be horizontally fixed at a desired position in the vertical direction of the hollow shaft P.

  On the other hand, reference numeral 5 is a bearing unit for supporting the rotor 2 on the hollow shaft so that the permanent magnet can rotate while maintaining a constant interval with respect to the coil winding of the stator 1. Three parts divided into three for each partial rotor 2 having a central angle θ of 120 ° are connected and fixed to the outer peripheral surface of the shaft.

  Therefore, the rotor 2 can be rotated in a horizontal plane in a floating state while maintaining the air gap G with respect to the stator 1 while being supported by the hollow shaft P. As such a bearing unit 5, a known thrust bearing, for example, can be used for a shaft having a small shaft diameter P, and a magnetic levitation type is not used for a shaft having a large shaft diameter. A contact bearing or a dynamic pressure type air bearing is used. In the case of the latter magnetic levitation type non-contact bearing or air bearing, the degree of freedom in assembling accuracy to the hollow shaft P is high, and it can be sufficiently adapted to high-speed rotation.

  Thus, the rotor 2 of the outer rotor type generator of the first invention can be rotated while holding the predetermined air gap G with respect to the stator 1 and the hollow shaft P, and the permanent magnets 2d and 2e can be rotated. A current generated when the magnetic flux cuts the coil windings 1c and 1c of the stator 1 and generated by each of the three power generation partial units 10, 10, and 10 is an electric wire passing through the inside of the hollow shaft P (not shown). The current is collected and then rectified by a rectifier in a known control panel (not shown) and supplied as a power source for various applications.

  Thus, in the outer rotor type generator of the first invention, since the stator 1 and the rotor 2 are divided into three equal parts, the hollow shaft P of the rotor 2 is, for example, an outdoor column, street light, highway sign In this case, it is much easier to carry in to the site, assemble at the site, or replace parts at the time of failure, and in any case, the assembly man-hour can be greatly reduced.

Further, since the hollow shaft P is a structure having a high altitude outdoors, it can also serve as a lightning rod.
[Embodiment 2]
Next, an example of the second invention will be described with reference to FIG.

  FIG. 4A is a partial longitudinal sectional view of an example in which the bearing structure of the rotor 2 of the outer rotor type generator according to the first invention described above is a floating type, and FIG. It is a BB sectional view of the bearing structure. Note that the configuration of the part not specifically described is the same as in the case of the first invention.

  In FIG. 4 (a), the bearing structure of the second invention is such that the upper generator 6 is mounted on the upper part of the vertically extending hollow shaft P, and the lower power generator is installed on the lower part at a predetermined distance. Machine 7 is installed.

The upper generator 6 is fixed with the stator 1A having the coil winding 1c described above with respect to the hollow shaft P, and the rotor 2A is located on the outer periphery thereof via a predetermined air gap G.
The rotor 2A includes a ring 2Aa having a substantially “U” -shaped longitudinal section and a plurality of permanent magnets 2Ab fixed to the back side of the side surface of the ring. The nacelle 8 is fixed to prevent the entry of wind and rain into the generator by surrounding the generator. The nacelle 8 is formed by bending a thin steel plate as shown in the figure. An electromagnet 8b is fixed to the back surface of the upper surface 8a, and the rotor 2 is subjected to a repulsive force with the electromagnet 8b fixed to the upper end portion of the hollow shaft P. The whole is levitated in a state through a predetermined air gap G.
Further, an electromagnet 8d is also provided on the back side of the conical surface 8c below the nacelle 8, and due to the mutual repulsive force with the electromagnet 8e fixed to the inclined surface Pa of the hollow shaft P through a predetermined air gap G, The rotor 2A can be positioned in the vertical direction with respect to the stator 1A.
On the other hand, the lower generator 7 is also fixed with the stator 1A having the coil winding described above with respect to the hollow shaft P, and the rotor 2A is provided on the outer periphery thereof via a predetermined air gap G.
The lower portion of the nacelle 8 is bent and fixed to the outer peripheral surface of the ring 2Aa having a substantially “U” cross section of the rotor 2, and the electromagnet 8d is fixed to the back surface of the upper conical surface 8c. Due to the repulsive force with the electromagnet 8e fixed to the inclined surface Pa of the shaft P, the entire rotor 2A is levitated through a predetermined air gap G.

  Therefore, the pair of upper and lower generators 6 and 7 mounted on the hollow shaft P with a predetermined interval H is separated from the rotor by the repulsive force of the pair of electromagnets 8b and 8b provided on the upper side of the upper generator 6. 2 can float with respect to the stator 1 through a predetermined air gap G, and two pairs of electromagnets 8e and 8d provided on the conical surface 8c of the nacelle 8 of the upper generator 6 and the lower generator 7 are provided. Thus, a certain position can be maintained.

  The stator 1A and the rotor 2A according to the second aspect of the invention are also assembled by connecting three power generation partial units 10A having a central angle θ of 120 ° in an annular shape as described in the longitudinal sectional view of FIG. It is a thing.

  The above-described three pairs of electromagnets 8b, 8d, and 8e facing each other use the principle and structure of the former levitation electromagnet among levitation electromagnets and propulsion electromagnets used in known linear motors. Therefore, a specific description is omitted here.

  Also in the second aspect of the invention, the stator 1A and the rotor 2A can be assembled in an annular shape by connecting three units of the power generation unit 10A having a central angle θ of 120 °. Maintenance is much easier, and the assembly man-hours can be greatly reduced.

  In addition, since the external rotor 2A has a floating structure adopting a so-called linear motor system with respect to the stator 1A by the positioning magnets 8e and 8d, in addition to the effects of the first invention described above, an assembly error or the like is introduced. Can absorb.

Further, since it is not necessary to support the windmill in direct contact like a conventional bearing, the cutout rotational speed of the windmill can be set high.
[Embodiments 3 and 4]
Next, an example of the third and fourth inventions will be described with reference to FIG.

  FIG. 5 shows another example of the bearing structure of the rotor 2A described in FIG. 4 as the third invention, and the generator according to the embodiment in which the wind turbine blade E is attached to the rotor 2A is the fourth invention. 5A is a longitudinal cross-sectional view, and FIG. 5B is an enlarged cross-sectional view of the upper generator 6A of FIG. 5A cut along the line CC.

  In FIG. 5A, the upper generator 6A and the lower generator 7A are fixed to a hollow shaft P standing from the ground with an interval H therebetween. The stator 1A of each of the generators 6A and 7A is fixed to a columnar body P at the center, and the conical surface 9a of the stator mounting shaft 9 inside the stator 1A is used for the floating and positioning of the rotor 2A. Electromagnets 8e and 8d are fixed.

  On the other hand, the rotor 2A is fixed to the inner surface of the rotor mounting cylinder 11 that also serves as the nacelle 8 so as to face the stator 1A, inside the rotor 2A, and on the conical surface 11a of the rotor mounting cylinder 11. An electromagnet 8d for floating and positioning of the rotor 2A is fixed to the back surface of the rotor 2a so as to face the stator-side electromagnet 8e. The same applies to the lower generator 7A.

  An arm 12 extends radially from the outer peripheral surface of the nacelle 8, and a gyromill type windmill blade E is fixed to the tip of the arm 12. The type of the windmill blade E is not particularly limited, and other types such as a propeller type, a Darius type, and a saponius type can be fixed to the rotor 2 in addition to the gyromill type.

  Accordingly, in the third invention as well, the stator 1A and the rotor 2A are connected to each other by three units of the power generation portion unit 10B having a central angle θ of 120 ° and assembled in an annular shape. Maintenance is much easier, and the number of assembly steps can be greatly reduced.

  Further, the pair of upper and lower rotors 2A are supported by a pair of upper and lower electromagnets spaced apart from each other through a predetermined air gap G so as to be rotatable like beams supported at both ends. Has the effect of stabilizing.

  Further, since the rotation of the rotor 2A with respect to the stator 1A is a floating rotation through the air gap G, the rotor is compared with the bearing structure of the rotor 2 of the conventional technology supported by the thrust bearing. The assembly accuracy of 2A can be absorbed, and the lifetime of the generator can be greatly extended.

  And according to the 4th invention which fixed the windmill blade E to the rotor 2A, even if the rotational torque of the wind with respect to the braid | blade E is unevenly distributed in the up-down direction of the braid | blade E, it is the structure which supports both ends of the braid | blade E with an arm. Therefore, the blade E can rotate stably.

  Next, the outer rotor type generator 20 according to the fourth aspect of the invention described with reference to FIG. 5 may be the following embodiment, which will be described with reference to FIG.

  FIG. 6 is a half sectional basic structural view showing only the left side portion of the outer rotor type generator 30 with respect to the hollow shaft P.

  This outer rotor type generator 30 includes three power generation unit units 10C each including a stator 1B having a central angle of 120 ° and a rotor 2B on the outer periphery of the hollow shaft P. It is connected and fixed in a plate shape.

  That is, the base end 1Ba of the stator 1B is fixed to the outer peripheral surface of the hollow shaft P by appropriate fastening means (not shown), and the end 1Bb of the yoke 1Bd extends in a disk shape in the radial direction. The coil winding 1Bc also extends in the radial direction while being wound around the yoke 1Bd.

  On the other hand, the rotor 2B has a substantially U-shaped cross section along the hollow axis P direction. A crank-shaped split surface 2Ba is formed on the extension of the center line of the stator 1B, and is integrally formed by appropriate fastening means. A permanent magnet 2Bb extending in the radial direction is fixed to the upper and lower inner peripheral surfaces so as to face the coil winding 1Bc.

  Also, between the base end portions 1Ba and 2Bc of the stator 1B and the rotor 2B, the linear motor type stator-side electromagnet 8e and the rotor-side electromagnet 8d described above with reference to FIGS. During rotation, the rotor 2B can float and rotate while maintaining a predetermined gap G by the repulsive action of both magnets.

  Next, FIG. 6B is a half cross-sectional view of a connection structure between adjacent power generation partial units 10C and a connection structure that fixes the wind power generation blade F to the rotor 2B, and FIG. 6B is a detailed view of a Q portion in FIG. 6B, and is an enlarged cross-sectional view in which a base end portion 2Bc of the rotor 2B is cut along a line DD. As shown in FIG. 6C, in this embodiment, the flange portion 13 is formed in the axial direction of the hollow shaft P so as to face each other at the end face of the adjacent portion of each rotor.

  Further, a lock ring 14 that is a connecting means between adjacent power generation partial units 10C is fixed to the outer peripheral surface of the opposing flange portion 13 with screws 15 so as to cover the rotor 2B.

  With this connection structure, the end surfaces of the adjacent portions of the rotors 2B are kept in close contact, and can be prevented from being displaced while the rotor 2B is rotating by being fixed with the screws 15.

  On the other hand, as shown in FIG. 6B, a blade fixing base end portion 16 having a substantially U-shaped cross section is fixed to the end portion of the rotor 2B with a plurality of screws 15. The wind power generator blade F can be easily mounted by using the front, back and side surfaces having a wide end.

Also in this embodiment, since the hollow shaft P is a high altitude structure outdoors, it can also serve as a lightning rod.
[Embodiment 5]
The outer rotor type generator according to the first to fourth inventions described above can be developed for various applications. FIG. 7 to FIG. 9 specifically show this for various wind power generation applications as the fifth invention.

  That is, FIG. 7 is an example in which the wind power generator 20 of FIG. 5 is used for a traffic sign 21 of a main road connected to an expressway and its entrance and exit from the upper end of a support pipe P made of iron pillars in the lateral direction. The wind power generator 20 is fixed to the upper portion of the support P and the arms 22 with respect to the route guidance sign plate 21 fixed to the arms 22 protruding to the top.

  According to the wind power generator 20 of this application example, the LED illumination lamps arranged with the generated power as the destination name of the route guide sign plate 21 can be caused to emit light. In addition, an anemometer (not shown) is fixed to the support pipe P, and the measured wind speed is made to light up, for example, “wind speed 7 m / sec” as the current wind speed to the LED illumination lamp of the nearby wind speed display plate 23, thereby driving in the vicinity. You can let the car driver know. Further, an outlet 24 is provided below the support P, and can be used as an emergency power source.

  By the way, recently, for example, a control technology that associates home appliances as a network has been developed. In the above example as well, a central control room (not shown) is constructed by networking a plurality of wind power generators installed in various places, and the detected wind speed is self-generated power. By reporting to, you can know the wind speed distribution in each place, which can be useful for natural disaster response and weather forecast.

  8 shows, for example, the wind power generator 20 shown in FIG. 5 in the vicinity of the top of the column P of the illuminating lamp 51 installed on the road side of the vehicle T such as a truck or bus traveling on a highway or the like. Is fixed on the left side of the vehicle, and a second power generator 20B that rotates at the wind pressure only when the traveling vehicle T passes is provided at the top of the column P. .

  According to the first generator 20A, since the installation location is a suburban highway or the like, wind power can be captured relatively, and the generated power can be used as an auxiliary power source in the event of a power failure.

  On the other hand, since the second generator 20B rotates with its wind pressure only when the traveling vehicle T passes and is self-generated, the power generation can be used as a passing signal of the vehicle, and the traffic volume on the main road can be grasped. It can be used to predict traffic jams in advance. Therefore, in the fifth aspect of the invention, the second generator is networked for each installation area and is notified to the central control room (not shown), so that the driver can be notified of traffic information or the vehicle can be detoured in advance. Can eliminate traffic jams.

  The generator 20 for wind power generation of FIG. 9 is an example used as a power source of the disaster prevention radio broadcasting equipment 61 installed outdoors. That is, in the disaster prevention radio broadcasting equipment 61, an antenna 62 for receiving disaster prevention radio information is fixed to a support pipe P made of steel pillars standing from the ground, and a speaker 61 provided with the disaster prevention information received by this antenna at the upper end. Broadcast to neighboring residents, and the power supply at that time is covered by the power generated by the wind power generator 20 of FIG. 5 fixed between the antenna 62 and the speaker 61.

  However, the solar power generation panel 63 is also provided as an auxiliary power source in preparation for a day when there is no wind, and the generated power is charged in the battery 64 and stored as an auxiliary power source during the day. In addition, the generated electric power can be used by any person through an emergency outlet 66 provided below the support pillar P. These two power sources can generate power even if a power failure occurs.

  The fifth invention described with reference to FIGS. 7 to 9 fixes the outer rotor type wind power generator 20 of FIG. 5 to a support column such as an iron column P having a different outer diameter installed outdoors. However, as described above, since the stator 1A and the rotor 2A are divided, the generator of the present invention has a common effect of being easy to assemble at the site. The power generation capacity of the generator applied to these columnar external structures P is not particularly limited, but is usually about 0.5 to 1.5 Kw.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to the thing of embodiment of the 1st-5th invention mentioned above, Various within the range described in the claim and embodiment. It is needless to say that modifications, applications, or combinations are possible, and these modifications, combinations, and application examples are also included in the scope of the present invention.

  For example, in the above description, the application of the present invention has been described as an example for wind power generation in which the hollow shaft of the stator 1 is vertical. However, by appropriately devising the bearing structure, the hollow shaft of the stator 1 can be It can also be applied to applications that are horizontal.

  In the above description, the use of the outer rotor type generator of the present invention has been described as an example of a wind power generator, but the basic structure is characterized by a stator / rotor split structure and a bearing structure thereof. Because of its versatility, it can also be applied to outer rotor generators in all fields other than wind power generation.

1: Stator 2: Rotor 3: Connecting portion 4: Positioning flange ring 5: Bearing unit 6: Upper side generator 7: Lower side generator 8: Nacelle 9: Stator mounting shaft 10: Power generation partial unit 11: Rotor mounting cylinder 12: arm 13: flange portion 14: lock ring 20: generator for wind power generation (present invention)
E: Windmill blade P: Columnar external structure (columnar body)

Claims (3)

Internal stator in which a plurality of divided power section units, and the plurality of power generating partial units that are divided is an external rotor containing permanent magnets, the internal stator of complete type each connected in a ring shape including a coil And a generator installed in a columnar external structure as a complete external rotor,
The inner stator extends radially from the side wall of the proximal end,
The external rotor has a substantially U-shaped longitudinal section, and is rotatably installed through a gap on the outside of the internal stator.
Further, a wind power generator, wherein a windmill blade is installed outside the external rotor.   The generator for wind power generation according to claim 1, wherein the external rotor is a bearing unit and is configured to float with respect to the internal stator.   The wind turbine generator according to claim 1, wherein the external rotor is a positioning magnet and can float with respect to the internal stator.

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