Damping wind turbine tower oscillations using gyroscopic forces

摘要

A method and a control device for damping an oscillatory movement of the top of a tower of a wind turbine are provided. The described method includes (a) rotating a rotor being rotatably attached to a nacelle of the wind turbine with a rotational speed, and (b) yawing the nacelle of the wind turbine around an axis being aligned with the longitudinal axis of the tower with a yawing speed. Thereby, a yawing movement being associated with yawing the nacelle is coordinated with the oscillatory movement in such a manner that a gyroscopic torque resulting (i) from rotating the rotor and (ii) from yawing the rotor damps the oscillatory movement of the top of the tower. A wind turbine comprising such a control device and a computer program for controlling this method are also provided.

主权项

1. A method for damping an oscillatory movement of a top of a tower of a wind turbine, the wind turbine comprising wind-driven blades rotating a rotor about a rotation axis attached to a nacelle on the tower, the method implemented by electronics of the wind turbine comprising a processor executing the steps of:
measuring a movement of the top of the tower; actuating a yaw adjustment system of the wind turbine to yaw the nacelle around an axis substantially aligned with the longitudinal axis of the tower with a yawing speed and direction that causes the rotating rotor to create a gyroscopic torque on the top of the tower that opposes the movement of the top of the tower.