WO2003016712A1 - Generateur eolien - Google Patents

Generateur eolien Download PDF

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Publication number
WO2003016712A1
WO2003016712A1 PCT/JP2001/009565 JP0109565W WO03016712A1 WO 2003016712 A1 WO2003016712 A1 WO 2003016712A1 JP 0109565 W JP0109565 W JP 0109565W WO 03016712 A1 WO03016712 A1 WO 03016712A1
Authority
WO
WIPO (PCT)
Prior art keywords
wind turbine
auxiliary
main
wind
generator
Prior art date
Application number
PCT/JP2001/009565
Other languages
English (en)
Japanese (ja)
Inventor
Hareyuki Nishida
Original Assignee
Kanki, Kenzou
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kanki, Kenzou filed Critical Kanki, Kenzou
Publication of WO2003016712A1 publication Critical patent/WO2003016712A1/fr

Links

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
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors coaxially arranged
    • 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
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/30—Wind power
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present invention relates to a wind power generator. Background art
  • the wind turbine of a conventional wind turbine starts rotating when it receives winds at a predetermined start wind speed (cut-in wind speed) or higher.
  • the wind turbine that has started to rotate continues to rotate even if the wind speed falls below the cut-in wind speed.
  • a wind turbine that starts with relatively low speed wind is required.
  • An object of the present invention is to provide a wind power generator having a relatively simple structure and improved power generation efficiency.
  • a wind power generator including a main wind turbine driving a generator, and an auxiliary wind turbine arranged coaxially with the main wind turbine and rotated independently of the main wind turbine.
  • the starting wind speed of the auxiliary wind turbine is lower than the starting wind speed of the main wind turbine.
  • the auxiliary wind turbine is located close to the main wind turbine so that when the auxiliary wind turbine is rotated, the main wind turbine is started at a lower speed than the main wind turbine.
  • a wind power generator including a main wind turbine driving a generator, and an auxiliary wind turbine arranged coaxially with the main wind turbine and rotated in the same direction as the main wind turbine.
  • the starting wind speed of the auxiliary wind turbine is lower than the starting wind speed of the main wind turbine.
  • the wind turbine transmits the rotation of the auxiliary wind turbine to the main wind turbine, starts the main wind turbine, and releases the transmission of the rotation from the auxiliary wind turbine to the main wind turbine after the main wind turbine starts rotating.
  • a transmission switching device for removing is provided.
  • the wind power generator When receiving wind, the auxiliary wind turbine and the main wind turbine preferably rotate in opposite directions.
  • the wind power generator further comprises a frame rotatably supporting the main wind turbine, and a bearing mounted on the frame and rotatably supporting the auxiliary wind turbine.
  • the frame preferably includes a sleeve covering the rotor shaft of the generator connected to the main wind turbine, and the bearing is preferably fixed to the outer surface of the sleep.
  • the auxiliary wind turbine is located downstream of the main wind turbine.
  • the wind power generator may further include an auxiliary generator driven by the auxiliary wind turbine to generate power, and a connection switching device for connecting the auxiliary wind turbine to the auxiliary generator when the rotation speed of the main wind turbine is equal to or higher than a predetermined value. It is good.
  • the main wind turbine has a plurality of main blades
  • the auxiliary wind turbine has at least one auxiliary blade
  • the number of the auxiliary blades is preferably smaller than the number of the main blades.
  • the auxiliary wind turbine is preferably stopped or decelerated when the rotation speed of the main wind turbine reaches a predetermined value or more.
  • the wind power generator further includes a sensor that detects the rotation speed of the main wind turbine.
  • the connection switching device preferably includes an electromagnetic clutch that switches the connection between the auxiliary wind turbine and the auxiliary generator based on a signal from the sensor.
  • FIG. 1 is a sectional view of a power generator according to one embodiment of the present invention.
  • FIG. 2 is a perspective view of the wind turbine generator of FIG.
  • Figure 3 is an enlarged view of the mounting part between the blade and the hub.
  • Figure 4 is a schematic diagram of the experimental device.
  • Figure 5 is a graph showing the experimental results.
  • FIG. 6 is a partial cross-sectional view of a power generator according to another embodiment of the present invention.
  • the wind turbine generator 11 has a fixed portion 12 fixed to the ground and a fixed portion 12 fixed to the ground.
  • a hollow metal strut 13 extending substantially perpendicularly from the fixed portion 12.
  • a support case 14 rotatable around the column 13 is arranged at the upper end of the column 13.
  • a tail fin 14 a is fixed to the support case 14. When the tail fin 14 a receives wind, the support case 14 is rotated so that the tail fin 14 a faces leeward.
  • a power generator 15 is attached.
  • the power generator 15 will be described with reference to FIG.
  • the generator 15 includes a main generator 16, an auxiliary generator 17, and a casing 15 a that houses the generators 16 and 17.
  • the main generator 16 is connected to a rotor shaft 18 arranged substantially horizontally.
  • the rotor shaft 18 penetrates a sleeve 19 fixed to the casing 15a, and protrudes outside the casing 15a.
  • a disc-shaped main hub 20 is fixed to the tip of the rotor shaft 18.
  • the rotor shaft 18 rotates together with the main hap 20.
  • the frame is formed by the casing 15 a and the sleeve 19.
  • main blades 21 extending radially are attached to the main hub 20 at equal angular intervals (120 °).
  • the main wind turbine 22 is formed by the main hub 20 and the main blade 21.
  • a radial bearing 26 is attached at a predetermined position on the peripheral surface of the sleeve 19.
  • An annular auxiliary hub 27 having the same diameter as the main hub 20 is fixed to the outer ring portion 26 a of the radial bearing 26.
  • Two auxiliary blades 28 having the same dimensions as the main blade 21 and extending radially are attached to the auxiliary haptic 27 at equal angular intervals (180 °).
  • An auxiliary hub 27 and an auxiliary blade 28 form a catch wind turbine 29.
  • the main windmill 22 and the auxiliary windmill 29 are coaxial and are independently rotated.
  • the main wind turbine 22 and the auxiliary wind turbine 29 are arranged relatively close to each other, and the interval between the two wind turbines 22 and 29 is set to a value that does not contact each other during rotation.
  • a bevel gear 31 is attached to the rear surface of the outer ring 26 a of the radial bearing 26.
  • the bevel gear 31 is engaged with a gear mechanism 32 attached to the casing 15a.
  • the gear mechanism 3 2 is connected to the auxiliary generator 1 7 via the electromagnetic clutch 3 3.
  • Drive shaft 17a The electromagnetic clutch 33 selectively connects the drive shaft 17 a and the gear mechanism 32 to selectively transmit the rotational energy of the auxiliary wind turbine 29 to the auxiliary generator 17.
  • the electromagnetic clutch 33 is activated according to a signal from a sensor 33a that detects the rotation speed of the rotor shaft 18. Specifically, the electromagnetic clutch 33 connects the gear mechanism 32 to the drive shaft 17a when the rotation speed of the rotor shaft 18 exceeds a predetermined value.
  • the gear mechanism 32 and the drive shaft 17a are disconnected.
  • the electromagnetic clutch 33 and the sensor 33a form a connection switching device.
  • the main blade 21 and the auxiliary blade 28 are attached to the main hub 20 and the f-auxiliary hub 27 by two L-shaped metal plate connectors 35a and 35b, respectively.
  • the blade connector 35 a is screwed to each blade 21, 28, and the hub connector 35 b is screwed to the main hub 20 or the auxiliary hub 27.
  • the blade connector 35a and the associated hub connector 35b are connected to each other by bolts 36a and nuts 36b. By loosening the bolt 36a, the mounting angle (pitch angle) ⁇ of each blade 21 and 28 can be adjusted.
  • the blade connector 35 a is fixed at the base end of the main blade 21 so as to be shifted to the one edge 21 a side.
  • the pitch angle ⁇ is set such that the distance between the other edge 21b of the main blade 21 and the main hub 20 is larger than the distance between one edge 21a and the main hub 20.
  • the blade connector 35 a is fixed at the base end of the catching blade 28 so as to be shifted to the one edge 28 a side.
  • the pitch angle is set so that the distance between the other edge 28 b of the auxiliary blade 28 and the catching hub 27 is larger than the distance between one edge 28 a and the auxiliary hub 27.
  • the direction of inclination of the main blade 21 is opposite to the direction of inclination of the auxiliary blade 28.
  • the auxiliary wind turbine 29 rotates in the opposite direction to the main wind turbine 22.
  • the main wind turbine 22 rotates counterclockwise
  • the auxiliary wind turbine 29 rotates clockwise.
  • the pitch angle is set so that the direction of the inclination of the auxiliary blade 28 is the same as the direction of the inclination of the main blade 21 as shown by the dashed line in FIG. 3
  • the auxiliary wind turbine 29 becomes the main wind turbine.
  • Windmill 2 Turns in the same direction as 2 (counterclockwise).
  • the tail fins 14 a When the wind blows, the tail fins 14 a receive the wind and the support case 14 rotates. Then, the support case 14 stops at the position where the wind resistance received by the tail fins 14a becomes the smallest. In other words, the tip of the tail fin 14 a faces leeward, and the main windmill 22 faces leeward. In this way, the main windmill 22 is always directed to the windward direction by the tail fins 14a.
  • the electromagnetic clutch 33 disconnects the auxiliary windmill 29 from the auxiliary generator 17.
  • the auxiliary wind turbine 29 starts to rotate. This is for the following reasons.
  • the number of blades of the auxiliary wind turbine 29 is two, which is less than the number of blades (three) of the main wind turbine 22.
  • a load based on the connection with the main generator 16 acts on the main wind turbine 22.
  • the auxiliary wind turbine 29 is separated from the auxiliary generator 17 by the electromagnetic clutch 33. Therefore, the auxiliary wind turbine 29 is started by a lower speed wind than the main wind turbine 22.
  • the main windmill 22 is activated under the influence of the rotation of the auxiliary windmill 29. That is, the main wind turbine 22 is started by a wind lower in speed than the starting wind speed of the main wind turbine 22 alone.
  • the electromagnetic clutch 33 connects the auxiliary wind turbine 29 and the auxiliary generator 17 and the gear mechanism 32 drives the driving shaft. Linked to 17 a. As a result, the rotational energy of the auxiliary wind turbine 29 is transmitted to the auxiliary generator 17, and the auxiliary generator 17 generates electricity.
  • the electromagnetic clutch 33 disconnects the auxiliary windmill 29 from the auxiliary generator 17. Thereby, the load acting on the auxiliary wind turbine 29 is reduced, and the rotation speed of the auxiliary wind turbine 29 is increased. Due to the effect of the increase in the rotation speed of the auxiliary wind turbine 29, the rotation speed of the main wind turbine 22 increases. Therefore, the amount of power generated by the main generator 16 is secured.
  • a wind tunnel device 51 is installed in front of the wind power generation device 11.
  • the wind tunnel device 51 includes a cylindrical wind tunnel 52 having a blower 53 and a current plate 55.
  • the number of rotations per second (rotational speed) of the blower 53 can be changed in synchronization with the frequency of the drive current.
  • the rotation speed of the blower 53 was changed by changing the frequency of the drive current by the power supply 54 provided with an inverter.
  • a voltmeter 56 is connected to the wind power generator 11 so that the generated voltage of the main generator 16 can be observed. Note that the electromagnetic clutch 33 is maintained in a disconnected state.
  • the distance from the air outlet of the wind tunnel 52 to the main wind turbine 22 is 150 cm, and the pitch angle ⁇ of the main wind turbine 22 is 15. It is.
  • the distance between the main wind turbine 22 and the auxiliary wind turbine 29 is 2.5 cm.
  • Experiments 1 to 6 were performed under the following conditions. In Experiment 1, the auxiliary wind turbine was omitted.
  • the frequency of the power supply 54 (power supply frequency) was increased by 1 Hz from the 15 Hz power, and the wind speed of the blower 53 was increased.
  • the dynamic wind speed (power-in wind speed) was examined. After the main wind turbine 22 was started, the frequency of the power supply unit 54 was decreased by 1 Hz, and the generated voltage (V) of the main generator 16 at each wind speed was measured by the voltmeter 56.
  • the auxiliary wind turbine 29 When the rotation direction of the auxiliary wind turbine 29 is opposite to that of the main wind turbine 22, the auxiliary wind turbine 29 is rotated at a higher speed. This is presumably because the wind affected by the rotation of the main wind turbine 22 is incident on the auxiliary wind turbine 29 at an angle at which the auxiliary wind turbine 29 can be more easily rotated.
  • the wind turbine 11 has an auxiliary wind turbine that is slower than the starting wind speed of the main wind turbine 2 2.
  • the main wind turbine 22 is started by a wind having a lower speed than the starting wind speed of the main wind turbine 22 alone, and the power generation efficiency of the main generator 16 is improved.
  • the rotation direction of the auxiliary wind turbine 29 may be set to the same direction as the rotation direction of the main wind turbine 22 or to the opposite direction.
  • the auxiliary wind turbine 29 is supported by a sleeve 19 that supports the main wind turbine 22 via a radial bearing 26. Therefore, the main windmill 22 and the auxiliary windmill 29 rotate independently of each other with a relatively simple structure. Since the auxiliary wind turbine 29 is supported by the sleeve 19, the rotor shaft 18 does not receive the load of the auxiliary wind turbine 29. Therefore, the main wind turbine 22 is rotated with a relatively small resistance and resistance, and the power generation efficiency of the wind power generator 11 is improved.
  • the auxiliary windmill 29 is located downstream of the main windmill 22. Therefore, the main wind turbine 22 receives the wind before the auxiliary wind turbine 29, and the power generation efficiency of the wind power generator 11 can be further improved.
  • the number of auxiliary blades 28 (two) is smaller than the number of main blades 21 (three). In this way, the starting wind speed of the auxiliary wind turbine 29 can be made lower than the starting wind speed of the main wind turbine 22 relatively easily at a relatively low cost. Since the number of auxiliary blades 28 is different from the number of main blades 21, all auxiliary blades 28 The overlap with the in-plane 21 is prevented. As a result, the auxiliary wind turbine 29 can receive sufficient wind.
  • the main wind turbine 22 and the auxiliary wind turbine 29 are not limited to being rotatably supported independently of each other.
  • a disk 71 having a diameter substantially equal to the diameter of the auxiliary hub 27 is formed integrally with the rotor shaft 18.
  • An electromagnet 72 is attached to the casing 15a via a bracket 15b.
  • the electromagnet 72 is disposed to face the auxiliary hub 27 and is excited when the rotation speed of the rotor shaft 18 is equal to or higher than a predetermined value.
  • a leaf spring (not shown) for urging the auxiliary hub 27 toward the disk 71 is arranged.
  • the auxiliary hub 27 is supported by a radial bearing 26 so as to be slightly slidable along the axis of the rotor shaft 18.
  • the transmission switching device is formed by the auxiliary hub 27, the disk 71, and the electromagnet 72.
  • the pitch angle is set to gx / E 0 so that the auxiliary wind turbine 29 rotates in the same direction as the main wind turbine 22.
  • the electromagnetic clutch 33 disconnects the auxiliary windmill 29 from the auxiliary generator 17, and the electromagnet 72 is demagnetized. ing. Therefore, the auxiliary hub 27 is in contact with the disc 71 by the urging force of the leaf spring, and is rotatable relative to the disc 71.
  • the auxiliary wind turbine 29 starts to rotate.
  • the rotation of the auxiliary wind turbine 29 is transmitted to the rotor shaft 18 by friction between the auxiliary hub 27 and the disk 71, and the main wind turbine 22 starts rotating. That is, the main windmill 22 is started by the wind having a speed lower than the wind speed of the main windmill 22 alone.
  • the electromagnets 72 are excited.
  • the auxiliary hub 27 is attracted to the electromagnet 72, the contact between the auxiliary hub 27 and the disk 71 is released, and the connection between the main wind turbine 22 and the auxiliary wind turbine 29 is released.
  • the auxiliary wind turbine 29 is connected to the auxiliary generator 17 by the electromagnetic clutch 33 after the contact with the disk 71 is released.
  • the auxiliary generator 17 generates electric power using the rotational energy of the auxiliary wind turbine 29.
  • the main windmill 22 is stopped and the auxiliary windmill 29 is started by the wind having a lower speed than the starting wind speed of the main windmill 22, the main windmill 22 is rotated by the rotation of the auxiliary windmill 29.
  • the number of blades of the main wind turbine 22 may be changed. Further, the number of the assisting blades 28 may be changed, but is preferably smaller than the number of the main blades 21.
  • the number of auxiliary blades 28 does not have to be set smaller than the number of main blades 21. If the starting wind speed of the auxiliary wind turbine 29 is lower than the starting wind speed of the main wind turbine 22, the number of the auxiliary blades 28 may be equal to or larger than the number of the main blades 21.
  • the size of the auxiliary blade 28 may be different from that of the main blade 21.
  • the auxiliary blade 28 may be larger than the main blade 21, but is preferably equal to or smaller than the main blade 21.
  • the brake mechanism may be operated to decelerate or stop the auxiliary wind turbine 29 so that the rotation speed of the main wind turbine 22 does not exceed a predetermined value. Even in this case, it is possible to prevent the auxiliary wind turbine 29 from reducing the power generation efficiency of the main wind turbine 22.
  • the sleeve 19 may be supported by a support member extending from the upper surface of the support case 14, for example. Even in this case, since the load of the auxiliary wind turbine 29 does not act on the main wind turbine 22, it is difficult to rotate the main wind turbine 22. I can do it. Note that the support member and the sleep 19 function as a frame.
  • the sleeve 19 may be attached to the main generator 16 instead of being fixed to the casing 15a. Even in this case, since the load of the catch wind turbine 29 does not act on the main wind turbine 22, the main wind turbine 22 can be easily rotated. Sleep 19 functions as a frame.
  • a thrust bearing may be used instead of the radial bearing 26 supporting the auxiliary wind turbine 29.
  • the auxiliary wind turbine 29 may be arranged on the windward side of the main wind turbine 22.
  • the wind power generator which has a comparatively simple structure and starts with a comparatively low speed wind, and which improved power generation efficiency is provided.

Abstract

L'invention concerne un générateur éolien (11) produisant de l'énergie à l'aide de vent de vitesse relativement faible. Le générateur éolien comprend un générateur d'énergie (15) comportant un générateur principal (16) ainsi qu'un générateur auxiliaire (17), une éolienne principale (22) fixée à l'extrémité avant de l'arbre (18) du rotor du générateur principal, un manchon (19) couvrant l'arbre du rotor, un palier radial (26) fixé au manchon, et une éolienne auxiliaire (29) fixée à la partie annulaire extérieure (26a) du palier radial. L'éolienne auxiliaire est disposée proche de l'éolienne principale sans la toucher. Le sens de rotation de l'éolienne auxiliaire est inverse à celui de l'éolienne principale.
PCT/JP2001/009565 2001-08-10 2001-10-31 Generateur eolien WO2003016712A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-243637 2001-08-10
JP2001243637A JP2003056446A (ja) 2001-08-10 2001-08-10 風力発電装置

Publications (1)

Publication Number Publication Date
WO2003016712A1 true WO2003016712A1 (fr) 2003-02-27

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ID=19073703

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/009565 WO2003016712A1 (fr) 2001-08-10 2001-10-31 Generateur eolien

Country Status (2)

Country Link
JP (1) JP2003056446A (fr)
WO (1) WO2003016712A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7095129B2 (en) * 2004-06-30 2006-08-22 General Electric Company Methods and apparatus for rotor load control in wind turbines
ITPG20100004A1 (it) * 2010-01-11 2011-07-12 Aeroconsult Int Srl Sistema di conversione elettrica della energia eolica con eliche controrotanti e generatori ad albero cavo
CN103375350A (zh) * 2012-04-16 2013-10-30 远景能源（江苏）有限公司 具有主发电机和次发电机的风力涡轮机及其操作方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2528767C (fr) * 2003-06-09 2013-07-30 Shinko Electric Co., Ltd. Generateur et materiel d'alimentation en energie pour utilisation connexe
WO2005040606A1 (fr) * 2003-10-24 2005-05-06 Shinko Electric Co., Ltd. Source d'alimentation, generatrice et eolienne
JP4539075B2 (ja) * 2003-10-24 2010-09-08 シンフォニアテクノロジー株式会社 電源装置を備えた発電装置
DE102004024563B4 (de) * 2004-05-18 2008-01-10 Nordex Energy Gmbh Verfahren zur Erzeugung von Notstrom für eine Windenergieanlage mit einem Hilfsgenerator
KR100970302B1 (ko) * 2008-01-25 2010-07-15 엘에스전선 주식회사 이중 날개를 이용한 수평축 풍력 발전 장치
CN102734073B (zh) * 2011-04-07 2014-05-28 陆继荣 涡扇式双扇叶水平轴轴向扭矩平衡风能发电机
CN103358917A (zh) * 2012-04-05 2013-10-23 陆继荣 并联式风能油电混合动力汽车
CN103358918A (zh) * 2012-04-05 2013-10-23 陆继荣 增程式风能油电混合动力汽车

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419036A (en) * 1977-07-12 1979-02-13 Nippon Electric Ind Wind mill device
WO1996018815A1 (fr) * 1994-12-16 1996-06-20 Alfred Wilhelm Turbine eolienne
DE4444757A1 (de) * 1994-12-15 1996-06-20 Lehmann Klaus Dieter Gebläse bzw. Windgenerator
JP2519899B2 (ja) * 1986-07-22 1996-07-31 一郎 和田 風力回転駆動機構
DE19543458A1 (de) * 1995-11-22 1997-05-28 Ekkehard Senf Windkraftanlage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419036A (en) * 1977-07-12 1979-02-13 Nippon Electric Ind Wind mill device
JP2519899B2 (ja) * 1986-07-22 1996-07-31 一郎 和田 風力回転駆動機構
DE4444757A1 (de) * 1994-12-15 1996-06-20 Lehmann Klaus Dieter Gebläse bzw. Windgenerator
WO1996018815A1 (fr) * 1994-12-16 1996-06-20 Alfred Wilhelm Turbine eolienne
DE19543458A1 (de) * 1995-11-22 1997-05-28 Ekkehard Senf Windkraftanlage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7095129B2 (en) * 2004-06-30 2006-08-22 General Electric Company Methods and apparatus for rotor load control in wind turbines
ITPG20100004A1 (it) * 2010-01-11 2011-07-12 Aeroconsult Int Srl Sistema di conversione elettrica della energia eolica con eliche controrotanti e generatori ad albero cavo
CN103375350A (zh) * 2012-04-16 2013-10-30 远景能源（江苏）有限公司 具有主发电机和次发电机的风力涡轮机及其操作方法

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