| 摘要 |
It is described a method for determining and applying a pitch angle offset signal for controlling a rotor frequency of a rotor of a wind turbine, the method comprising: obtaining a motion quantity indicative of a motion of the rotor (221); determining the pitch angle offset signal (439) based on the motion quantity such that the pitch angle offset signal is adapted to be used for adjusting a blade pitch angle (²) of a rotor blade (219) mounted at the rotor (221) for controlling the rotor frequency in order to reduce a time span during which the rotor is in a critical motion region (450). Furthermore, a corresponding system and a method for controlling a rotor frequency are provided. |
