[특허]Wind turbine blade pitch control system

[미국특허] Wind turbine blade pitch control system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F03D-007/02
출원번호	US-0130658 (1980-03-17)
발명자 / 주소	Barnes Philip E. (West Hartford CT) Mayo Millard G. (Wethersfield CT) Sherman Robert (West Hartford CT)
출원인 / 주소	United Technologies Corporation (Hartford CT 02)
인용정보	피인용 횟수 : 29 인용 특허 : 4

초록 ▼

A pitch control system for a multibladed variable pitch wind turbine. Each of the turbine blades is pivotally driven about the longitudinal axis thereof independently of the other blades by at least a pair of hydraulic actuators. The actuators are supplied with pressurized hydraulic fluid from a first source thereof under conditions of normal pitch change adjustment. Under conditions wherein feathering of the blades is required, the actuators are supplied with hydraulic fluid from second sources thereof such that one of the actuators associated with each of the blades is supplied with fluid from one second source and a second actuator is provided with fluid from a redundant second source whereby blade feathering may be effected despite a malfunction of one of the redundant sources or one of the actuators. In one of the two preferred embodiments disclosed, the first and second fluid sources are maintained in mutual communication whereby fluid from the second sources thereof may supplement fluid from the first source under conditions of normal blade pitch adjustment.

대표청구항 ▼

A pitch control system for a wind turbine having a plurality of blades, said control system comprising a plurality of hydraulic actuators, each connected to one of said blades and adapted to pivot said blade about the longitudinal axis thereof in blade pitch adjusting and feathering modes of operation; means in fluid communication with said actuators for selectively distributing hydraulic fluid to said actuators in both pitch adjusting and feathering modes of operation; first and redundant second sources of pressurized hydraulic fluid in fluid communication with said distributing means for supplying hydraulic fluid thereto for delivery to said actuators; first means communicating with said first hydraulic fluid source for controlling the introduction of hydraulic fluid from said first source to said distributing means in said blade pitch adjusting mode and second means communicating with said second hydraulic fluid sources for controlling the introduction of hydraulic fluid from said redundant second hydraulic fluid sources in said blade feathering mode such that each of said redundant sources supplies hydraulic fluid to at least a single one of said actuators associated with each of said blades independently of other hydraulic actuators associated therewith whereby each of said redundant second sources of hydraulic fluid is individually capable of powering all of said blades simultaneously in said feather mode of operation.

이 특허에 인용된 특허 (4) 인용/피인용 타임라인 분석

Garner Jimmy G. (Hurst TX) Guinn Kenneth F. (Fort Worth TX), Swashplate drive redundancy system.
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Worback David L. (Highland MI), Swing valve circuit.
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Huetter Ulrich (Schlierbacher Strasse 93 D-7312 Kirchheim DEX), Wind turbine.
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Patrick John P. (South Windsor CT), Wind turbine generator having integrator tracking.
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이 특허를 인용한 특허 (29) 인용/피인용 타임라인 분석

Annebique, André ; Schmidt, Jörg, Apparatus for hydraulically adjusting the blades of an impeller of an axial-flow fan.
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Harner Kermit I. (Windsor CT) Patrick John P. (South Windsor CT) Vosseller Kenneth F. (Enfield CT), Blade feathering system for wind turbines.
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Fric, Thomas Frank; Standish, Kevin; Pierce, Kirk Gee; Landa, Bernard, Blade pitch management method and system.
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McArdle Francis H. (Norristown PA), Helicopter rotor control system with integrated hub.
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Nomaguchi, Hiroyuki; Yuge, Atsushi; Hayashi, Toshikazu, Hydraulic system and wind turbine generator provided therewith.
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Oyama, Hiroki, Hydraulic system for aircraft.
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Lehnhoff, Martin, Individual blade adjustment for wind turbines.
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Carlock, Gaylord W.; Garner, Jimmy G.; Gatlin, Charles M.; Guinn, Kenneth F.; Reyes, Peter A., Individual blade control.
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Weitkamp, Roland; Lütze, Henning; Riesberg, André; Anemüller, Jochen, Means for adjusting the rotor blade of a wind power plant rotor.
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Moroz,Emilian Mieczyslaw; Pierce,Kirk Gee, Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed.
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Pedersen, Bo Juul, Method and control system for reducing the fatigue loads in the components of a wind turbine subjected to asymmetrical loading of the rotor plane.
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Gao, Meng; Ma, Cheng, Method and system for operating a wind turbine during a fault.
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Schubert, Matthias, Method for controlling a wind turbine and corresponding wind turbine.
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Andersen, Jesper Lykkegaard; Madsen, Jens Bay, Pilot circuitry for controlling the emergency feathering of a wind turbine.
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Numajiri, Tomohiro; Matsushita, Takatoshi, Pitch drive apparatus of wind generator and wind generator.
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Rogall, Peter; Achenbach, Patrick, Pitch drive system for a wind turbine.
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Menke, Detlef, Redundant blade pitch control system for a wind turbine and method for controlling a wind turbine.
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Egedal, Per; Kjaer, Ole; Lund, Mogens, System for triggering an emergency system of a wind turbine.
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Erdman, William; Behnke, Michael; Garcia, Ricardo Royo; Polo, Miguel Nunez, Systems, methods and apparatuses for a wind turbine controller.
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Perkinson, Robert H., Teeter mechanism for a multiple-bladed wind turbine.
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Bertolotti, Fabio P., Teeter-restraint device for wind turbines.
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Bertolotti, Fabio R., Teeter-restraint device for wind turbines.
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Aloys Wobben DE, Wind energy installation.
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Andersen, Jesper Lykkegaard; Madsen, Jens Bay, Wind turbine and a method for pitching a blade of a wind turbine.
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Andersen, Jesper Lykkegaard; Madsen, Jens Bay, Wind turbine and a method for powering one or more hydraulic pitch actuators.
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Hancock, Mark; Loh, Wuh Ken; Chang, Yun Chong Gabriel, Wind turbine blade.
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Jeppesen, Ole Mølgaard; Bengtson, John; Hansen, Torben Møller, Wind turbine comprising a multiplied redundancy control system and method of controlling a wind turbine.
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Von Mutius,Martin, Wind turbine in parked position.
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Risager, Lars; Svendsen, Rasmus; Miranda, Erik Carl, Wind turbine with pitch control arranged to reduce life shortening loads on components thereof.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Wind turbine blade pitch control system 원문보기