IMPLEMENTING FUZZY CONTROLLER FOR WIND TURBINE CONTROL FOR ALL WIND SPEEDS --WITH REDUCED FUZZY RULE SET

To extract maximum power, at below rated speed of wind, the speed of the generator rotor is adjusted for maximum power extraction. But for higher wind speed, however the output power is monitored and controlled at rated power by pitch angle adjustments. In this paper attempt has been made to design and implement a fuzzy controller, which is applicable for both below rated wind speed region as well as above that. It is proposed and shown that how framing control rules using only the desired extremity conditions  helps attaining the desired result with a reduced rule set, making it easy for further fine tuning too.