Patent ID: 8115331
Filing Date: 2012-02-14
Classification: F03D,F05B,Y02B,Y02E

Abstract:
1. A wind turbine generator, comprising: a nacelle; a rotor; blades; a tower supporting the nacelle; a pitch-angle control mechanism for controlling a pitch angle of the blades on the basis of a blade-pitch-angle command; an accelerometer for detecting the acceleration due to vibrations; a damping unit for calculating a pitch angle of the blades so as to cancel out the vibrations on the basis of the acceleration detected with the accelerometer and for outputting a blade-pitch-angle command for damping; a pitch-angle control unit for an adder for supplying the pitch-angle control mechanism with a blade-pitch-angle command obtained by combining the blade-pitch-angle command for damping with the blade-pitch-angle command for output control; wherein the damping unit includes a phase compensator for applying a phase compensation by a predetermined amount.