Universal maximum power point tracking in wind-solar hybrid system for battery storage application

This paper proposes a universal control algorithm to harvest maximum possible power from wind-solar hybrid energy system for battery storage application. It consists of main and auxiliary battery storage system which has higher energy yield as compared to conventional energy storage system. The universal control strategy improves the performance of the hybrid system for large variations in wind velocity and solar radiation conditions with reduced complexity of the controller. Thus the system achieves higher reliability and better energy yield, especially in poor environmental conditions. The algorithm also maintains constant voltage at the DC bus. A separate boost and buck converters are used for the maximum power point tracking (MPPT) and voltage regulation using the universal controller. Operation of the complete proposed system under different climatic conditions is verified through the PSCAD/EMTDC simulation studies.