DEVELOPMENT OF GRID CONNECTED PHOTOVOLTAIC SYSTEM USING FUZZY LOGIC CONTROLLER

This paper describes a Development of grid connected Photovoltaic (PV) system using Fuzzy Logic Controller (FLC). The Modified Single Ended Primary Inductor Converter (Mod. SEPIC) with the fuzzy logic based Maximum Power Point Tracking (MPPT) provides a constant voltage for a PV system. This converter is highly preferred to obtain a high voltage gain. The output of Mod-SEPIC converter is given to three phase Hex bridge inverter which helps to invert the incoming DC into AC. The proposed system is designed and monitored with an embedded controller which generates a control signal and activates the driver unit. The main objective of this paper deals with the PV system to supply required renewable power to the AC load and the excess power produced from the PV array can be fed into the grid. The excess during peak radiation period can be utilized effectively and fed to the grid thereby reduces the cost of the system. The whole system is developed and tested using MATLAB/Simulink software under various climatic and load conditions