Patent ID: 7452185
Filing Date: 2008-11-18
Classification: F03D,F05B,Y02E

Abstract:
1. A blade-pitch-angle control device used for a wind power generator having a plurality of blades, the blade-pitch-angle control device comprising: a memory device in which predetermined parameters that affect the load fluctuation of the blades, azimuth angles, and pitch-angle command values are stored in association with each other; an azimuth-angle detecting device that detects the azimuth angle of each of the blades; a parameter-detecting device that detects the predetermined parameters; a command-value receiving device that receives the pitch-angle command values for each of the blades from the memory device, the pitch-angle command values being selected on the basis of the azimuth angle of each blade detected by the azimuth-angle detecting device and the predetermined parameters detected by the parameter-detecting device; and a pitch-angle-control command-value generating device that generates pitch-angle-control command values for individually controlling the pitch-angle of each blade on the basis of the pitch-angle command values received by the command-value receiving device and a common-pitch-angle command value that is common to each blade, the common-pitch-angle command value being determined by output information of the wind power generator.