Patent ID: 8198741
Filing Date: 2012-06-12
Classification: F03D,F05B,Y02E

Abstract:
1. A wind turbine generator system comprising, a nacelle mounted atop a tower, a main shaft mounted in the nacelle and having a rotor head to which wind turbine blades are attached, the main shaft and the wind turbine blades integrally rotating, a gear box attached to the main shaft, and accelerating and outputting the rotation speed of the main shaft, a generator driven by the output of the gear box, and a controller that performs cut-out control during strong wind when a measured value from an anemometer is a predetermined level or more, the controller being configured to decide that the anemometer has a fault when a difference of a predetermined level or more occurs between the measured value from the anemometer and an estimated wind speed value obtained from a relationship between a blade-pitch-angle of the wind turbine blades and an output of the generator, wherein the controller is operatively connected with an outside air temperature sensor and configured to use a detection value of outside air temperature for deciding that the anemometer has a fault.