Selection of optimal controller for active and reactive power control of doubly fed induction generator (DFIG)

The world is facing the challenge to generate and store electrical energy in an effective manner so the concentration of wind farm is increasing day by day. All these natural resources possess stochastic behavior so the variation in output waveforms at all these nonlinear power supply units are pre-default. Integration of these standalone, isolated dispatch able units with grid leads instability and imbalance in active and reactive power. In order to control active and reactive power in variable speed wind generators, different control schemes are adopted to mitigate voltage and current fluctuations. In this research work mathematical model of variable speed, a wind turbine with their control schemes is implemented on MATLAB software. In order to improve transient performance of DFIG, a conventional controller is compared with Proportional, Integral, and Differential (PID) controller to get optimal power output. Analysis of results clearly depict the robustness of PID controller over a conventional controller.