Design of fuzzy logic based photovoltaic fed battery charging system

摘要

© 2019 the Author(s).The battery energy storage systems emerged as the best option among the different strategies developed for meeting energy demand, effective utilization of energy and its conservation. The PV system supply energy under consistent working condition and with aid of battery storage system it can supply under transient condition also. The proposed intelligent and robust control technique based battery charging circuit fed by photovoltaic (PV) system, consists two power electronic converters boost and buck converters. The intelligent MPPT controller using fuzzy logic is employed to extract maximum power through boost converter which increases the variable PV voltage level. The output of the boost converter is fed to buck converter to maintain constant voltage suitable for the battery charging using another fuzzy logic controller. Fuzzy control makes the controlled system robust under the presence of system uncertainties and external disturbances such as variable irradiance and temperature. The MATLAB based simulation results show the effectiveness of proposed scheme such as higher efficiency, lower cost, reduced battery losses and enhancing life cycle.