FUZZY LOGIC BASED HYBRID ENERGY STORAGE SYSTEM FOR WIND GENERATING PLANT

This paper discusses a hybrid energy storage system for isolated operation of permanent magnet synchronous generator based wind turbine. The hybrid energy storage system consisting of battery storage and a super capacitor, the battery and super capacitor provide high energy and power requirements respectively. The super capacitor ensures a healthy operation of the battery storage by preventing it to operate in high Depth of Discharge regions and to operate at low frequency power regions. The system provides the solution for power wasted by the turbine when the battery is in full charge condition .A fuzzy logic is proposed for the hybrid energy storage with a view to improve the performance of the battery storage and to improve the system stability. The simulation results using MATLAB simulink of the proposed method is capable of achieving voltage and frequency regulation, effective management of the hybrid storage system without dump load and maximum power extraction from wind