Optimization method for power regulation in wind turbine coupled to doubly-fed induction generator

This paper presents a optimization method for power regulation in a wind turbine which is coupled with doubly-fed induction generator (DFIG) through the gear-box system. In this method, the blade pitch angle and turbine shaft speed are dynamically varied in order to keep the captured power as close to the rated power as possible. The vector based control technique has been successfully implemented on the DFIG system for the required variable speed operation. The genetic algorithm has proposed to get optimal tip speed ratio to extract maximum possible power. The capacity of this method to handle fast varying wind speeds has been verified using MATLAB simulations.