Direct model reference adaptive internal model controller for DFIG wind farms with dither injection

Abstract

This paper presents the Direct model reference adaptive internal model controller for doubly fed induction generator used in wind farms based on MIT Rule adjustment mechanism with dither injection. Direct model reference adaptive internal model controller is developed and it is tuned using MIT rule. Rotor current controller is designed using direct model reference adaptive internal model controller to improve the robust performance of the system and triangular dither signal is injected to improve the performance of the system. The performance is compared with conventional direct model reference adaptive internal model controller and is described. Flexibility of proposed method in shunt connection is illustrated, dynamic response under fault causes sag condition, like sudden drop in terminal voltage and it affects the behavior of the machine, this phenomenon is simulated using MATLAB/SIMULINK and is presented.