Patent ID: 11965484
Assignee: VESTAS WIND SYSTEMS A/S
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 15:
16. A wind turbine comprising:
a rotor having at least one rotor blade;
a pitch actuator configured to adjust a pitch of the rotor blade; and
a control system configured to:
measure a motion parameter of the rotor blade;
determine, based on the motion parameter, a vibration velocity of an edgewise vibration at a center of mass of the rotor blade;
generate, based on the vibration velocity of the edgewise vibration at the center of mass of the rotor blade, a blade pitch angle control signal; and
transmit the blade pitch angle control signal to the pitch actuator to damp the edgewise vibration at the center of mass of the rotor blade,

wherein a resulting force on the rotor blade pitched according to the blade pitch angle control signal is, in a direction of the edgewise vibration in a coordinate system that rotates with the rotor, opposite and proportional to the vibration velocity of the edgewise vibration at the center of mass of the rotor blade.