Wind turbine blade pitch control system

Details Wind turbine blade pitch control system Wind turbine blade pitch control system

F - Mech Eng,Light,Heat,Weapons

03

D

170/4

F03D 7/00 (2006.01) F03D 7/02 (2006.01)

Patent

CA 1146076

- 16 - WIND TURBINE BLADE PITCH CONTROL SYSTEM Abstract Wind turbine blade pitch control system including hy- draulic actuators which pivotally drive the blades about the longitudinal axes thereof to adjust the blade pitch. The actuators are supplied with hydraulic fluid from independent sources thereof for normal blade pitch adjustment and feathering. Means are provided which, during feathering, isolate the pressurization and drain of the actuators from certain system components, whereby such pressurization and drain are not hampered by any malfunction of such components.

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