DEVICE AND METHOD OF DAMPING FRONT AND BACKWARD MOVEMENTS OF A TOWER OF A WIND TURBINE

摘要

The present invention is related to a device and a method of damping front and backward movements of a tower of a wind turbine, wherein the wind turbine comprises the tower and a rotor, the rotor being mounted at the top of the tower to rotate about a rotational axis in which the front and backward movements of the tower occur, and the rotor has a plurality of blades (15), wherein each blade has at least one corresponding active add-on member which is actuated by a corresponding actuator to alter aerodynamic properties of the blade. Each add-on member is actuated by the corresponding actuator (17) to alter the aerodynamic properties of the blade in a manner that the rotor is configured to damp the front and backward movements of the tower of the wind turbine.