Wind turbine and method for controlling the same

A method for controlling a wind turbine including a tower defining a vertical axis, a nacelle, a rotor having at least two rotor blades defining a rotor plane, and also a yaw system having at least one yaw drive for rotating the nacelle about the vertical axis, the method comprising the steps of:

• providing at least one signal indicative of wind direction;
• providing at least one value indicative of an edgewise vibration mode of the at least two rotor blades in the rotor plane;
• and,
• applying the at least one signal to a yaw control for the at least one yaw drive to control the position of the nacelle according to the at least one signal and wherein the yaw control further depends upon the at least one value indicative of the edgewise vibration mode of the at least two rotor blades in the rotor plane;
• wherein:
• a change in a rotational position of the nacelle is the at least one value indicative of the edgewise vibration mode of the at least two rotor blades;
• a rotational speed of the at least one yaw drive is controlled such that an amplitude of the change in the rotational position of the nacelle at a predetermined frequency (f) is dampened;
• and,
• the predetermined frequency (f) corresponds to the edgewise vibration mode of the at least two rotor blades in the rotor plane.