A sliding model control based on intelligent PID control for wind turbine system

This paper is presented a sliding model control (SMC) based intelligent PID method for a variable speed-constant frequency wind turbine system. This method regards power fluctuation which it is affected by the turbine wind or other factors as disturbance. This controller has two components. Firstly, an intelligent PID controller is designed by estimating the disturbance and compensating them online. Further more, in order to decrease the effect of error estimation, an extra sliding model controller is designed for compensating it. This method has been tested by a 5MW wind turbine system by Matlab/Simulink platform. The results confirm that the proposed method is powerful for the active power and is superior in the respond time.