发明名称 |
WIND TURBINE BLADE PITCH CONTROL SYSTEM |
摘要 |
The present invention provides an improvement for a wind turbine (20) having at least one blade (21) mounted on a hub (22) for controlled rotation about a blade axis (yb-yb) to vary the pitch of the blade relative to an airstream. The hub is mounted on a nacelle (23) for rotation about a hub axis (xh-xh). The wind turbine includes a main pitch control system for selectively controlling the pitch of the blade, and/or a safety pitch control system for overriding the main blade pitch control system and for causing the blade to move toward a feathered position in the event of an overspeed or fault condition. The improvement includes: an energy storage device (26) mounted on the nacelle and associated with the blade; a pitch-axis controller (25) mounted on the nacelle and associated with the blade and with the energy storage device; an electro-mechanical actuator (28) mounted on the hub and associated with the blade; and at least one slip ring (29) operatively arranged to transmit power and/or data signals between the pitch-axis controller and the electro-mechanical actuator; whereby the mass on the rotating hub may be reduced. |
申请公布号 |
EP2321531(B1) |
申请公布日期 |
2012.09.05 |
申请号 |
EP20090789274 |
申请日期 |
2009.09.08 |
申请人 |
MOOG INC. |
发明人 |
POTTER, BENJAMIN;NAGASAKI, RYUICHI;SHIGA, MAMORU |
分类号 |
F03D7/04;F03D7/02;F03D9/02 |
主分类号 |
F03D7/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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