Blade pitch angle control device and wind turbine generator

摘要

A blade-pitch-angle control device used for a wind power generator having a plurality of blades, the blade-pitch-angle control device comprising:
load-measuring devices (30) for measuring a load applied to the blades or mechanical parts constituting a windmill at predetermined azimuth angles;
a calculation device (31) for calculating a periodic fluctuation of the load on the basis of the measured values measured by the load-measuring devices;
an adjusting pitch-angle command-value generating device (32) for generating an adjusting pitch-angle command value for each blade for reducing a load fluctuation on the basis of the calculation results of the calculation device; and
a pitch-angle-control command-value generating device (36) for generating a pitch-angle-control command-value for each blade by causing the adjusting pitch-angle command value generated for each blade to be reflected in a common-pitch-angle command value for equally controlling the blades.