A novel optimal controller design for doubly fed induction generator speed control

Abstract

This paper presents a new method for doubly fed induction generator performance optimization using electromagnetic transient simulation (EMTP) program. A 2 MW doubly fed induction generator(DFIG) is modeled in electromagnetic transient simulation PSCAD/EMTDC. To optimize the performance of DFIG, each controller parameters like kp and k should be properly tuned and cordinated. The objective function (OF) is formed in terms of design parameters like kp and k of the controller to reduce the error arise due to overshoot, steady state error etc. The nonlinear optimization program evaluates the parameter values to minimize the OF value in successive iterations. In this paper, the OF is formed to minimize the error in outer speed control loop of rotor side converter of DFIG.