Fuzzy self-adaptive PID control of the variable speed constant frequency variable-pitch wind turbine system

The variable-pitch system is one of the most active subject in the wind turbine control field. After analyzing the principle of variable-pitch wind turbine, the modeling of variable-pitch wind turbine is established. General control strategy in different wind speed can be decided. Use PID controller to make basic control, capturing maximum wind energy at below rated wind speed. The paper presents a wind speed simulation model based on Kamal´s spectrum; Compared with PID control, intelligence control fuzzy self-adaptive control has better control effect.