Efficiency Maximizing of Doubly Fed Induction Generator with Considering Core Loss and Reactive Power Control by Optimized Model Reference Adaptive Method

In this paper, a novel approach is proposed for maximizing the efficiency of doubly fed induction generator based wind turbine. In order to maximize the efficiency, a new relationship is presented for determining the stator reactive power reference value, with considering core loss into account. In addition, a new control scheme is proposed which is based on model reference adaptive and controls the active and reactive powers. Since the suggested controller has proportional-integral and derivative controllers, selecting proper coefficient for them is of high importance. Hence, the Krill-Herd optimization algorithm is used to optimize the controller’ coefficients. The simulation results show the satisfactory performance of the proposed control scheme with high dynamics and low ripple. In addition, since maximizing the efficiency does not seek any additional cost, so the use of the proposed method makes wind power generation more cost effective.