Over the Last few Hence the tuning years parameters determines c onstant speed the efficiency of wind turbines are turbine.PID in use which was controller is a flexib flexible tuner and a very simple in simple tuner. construction and The tuner is connected there was no mechanical valve of necessity for speed the speed controller controllers.Due to which controls the the tremendous speed as per tuning improvements in technology parameters. constant speed wind turbines were gradually replaced by variable speed wind turbines where the researches are still ingrowth. To improve the efficiency of the turbines the power electronics area wherethe converters and inverters along with speed controllers are chosen and the parameters are optimised.