Tower vibration damping method of a wind turbine and tilt control system

摘要

Tower vibration damping method of a wind turbine (100) that is equipped with rotor blades, a step controller (13) and a step actuator system, fixing the pitch of the rotor blades, comprising the stages of : - provide a speed reference value (3) for the rotor speed; - providing a rotor speed value (1) representing the rotor speed (105); and - establish a modification value that represents a modification to be made in the speed reference value (3) to take into account tower vibrations; - use the modification value to modify the speed reference value (3) to establish a modified speed reference value; - determining a step reference value (7) representing a step to be set by the step actuator system based on at least the difference between the modified speed reference value and the rotor speed value; - control the pitch angle of the rotor blades according to the step reference value (7).