Patent ID: 7268443
Filing Date: 2007-09-11
Classification: F03D,F05B,G09G,H02J,H02P,Y02E

Abstract:
1. A wind turbine generator system of variable velocity drive comprising a generator connected to a shaft of a wind turbine, a converter connected to the generator, and a regulator for the converter, said regulator comprising: a velocity detector that detects a rotational velocity of the wind turbine; a velocity regulator that sets an instruction concerning the rotational velocity of the wind turbine based on a detected value by the velocity detector; a first control part that controls output power from the generator in a manner of following an instruction concerning the output power of the generator based on a wind velocity, if the rotational velocity of the wind turbine is within a predetermined range; and a second control part that controls the rotational velocity of the wind turbine in a manner of following the instruction concerning the rotational velocity, if the rotational velocity of the wind turbine is out of the predetermined range.