Performance Evaluation of Wind Turbine Driven Squirrel Cage Induction Generator Connected to Grid

Recently various FACTS devices have been used for flexible power flow control, secure loading and damping of power system oscillation. Some of those are used also to improve transient and dynamic stability of wind power generation system (WPGS). In this paper we proposed the static reactive compensator (STATCOM) based on the voltage source converter (VSC) PWM technique to stabilize grid connected squirrel cage wind generator system. The paper deals with the fuzzy logic based control of wind turbine driven by squirrel cage induction generator (SCIG) connected to grid. The controller is proposed to maintain the speed of the squirrel cage induction generator constant for different wind speeds. The proposed fuzzy logic controller (FLC) is used with nine rules to implement the control strategy for the induction generator. These state variables used for fuzzy logic controller design are the error signals from the model of the induction machine. The computer simulation results show the controller is satisfactory in operation of induction generator (IG) with the significant improvement in the reactive power output.