Patent ID: 9587626
Date: 2017-03-07
CPC Classifications: F03D,F05B,H02P,Y02E

Claim:
1. Control system for a wind turbine, such wind turbine being a variable speed turbine provided with a doubly fed induction generator having a stator and a rotor, the control system comprising: a converter including a rotor side converter connected with the generator rotor, and a network side converter adapted to be connected to a power distribution network; a temperature determination module configured for measuring and/or estimating the operating temperature of electrical components at least of the converter and the generator; a reactive power distribution module configured to cyclically calculate a distribution of reactive power production demand values for the stator and for the network side converter, to meet a global reactive power production demand, demanded to the wind turbine generator; and wherein distribution module is additionally configured to modify the distribution of reactive power production between the stator and the network side converter, based on the temperature determined by the temperature determination module, in order to reduce the operating temperature of the electrical component whose temperature is closest to a limit temperature.