| 摘要 |
A hydraulic system (200) is provided comprising,
- at least one hydraulic actuator (230),
- means (220...223) in fluid communication with the at least one hydraulic actuator (230) for selectively distributing hydraulic fluid to and from that at least one hydraulic actuator (230),
- at least one source (210, 211) of hydraulic fluid in fluid communication with that distribution means (220...223)
- for supplying hydraulic fluid to the at least one hydraulic actuator (230), or
- for draining away hydraulic fluid from the at least one hydraulic actuator (230),
- means (217) communicating with the at least one source for controlling
- pressurizing of the hydraulic fluid into the at least one actuator (230), or
- the draining away of the hydraulic fluid from the at least one actuator (230).
Further, a pitch control system for a wind turbine and a method for operating a hydraulic system are suggested. |
