| 摘要 |
Disclosed is a fluid control system for operation of a pitch control system for wind turbines of the type comprising a pitch system driving at least one rotor blade, by at least one hydraulic actuator (1, 41, 51, 61, 71, 91). A hydraulic pump(3, 43, 53, 63, 73, 93)of the fluid control system is supplied with hydraulic fluid from a hydraulic reservoir (5, 45, 55, 65, 75, 95) mounted on a rotating part of the wind turbine and the hydraulic reservoir is a pilot pressurized hydraulic reservoir (5, 45, 55, 65, 75, 95) being pressurized by the pitch system itself. The pilot pressurized hydraulic reservoir (5, 45, 55, 65, 75, 95) comprises a reservoir piston(101, 200)connected to a pilot piston (105, 202) through a rod (103), wherein the active reservoir piston area of the reservoir piston(101, 200) is larger than the active pilot piston area of the pilot piston (105, 202). A wind power generator is also disclosed. |
