Performance analysis of a renewable grid interconnected system based on fuzzy logic

This paper presents a solar photovoltaic grid interconnected system based on a PI-Fuzzy logic controller. The inverter described in this paper is a single stage converter powered by a buck or boost converter for efficiently transforming the input dc source into grid side ac. to extract maximum amount of power from the dc source a MPPT and a charge controller is provided with P & O algorithm. After transferring all the required power, the surplus amount can be stored in the battery through the charge controller. Matlab simulink was adopted to realize the circuit and controller. Experimental result obtained from the simulation was presented which clearly indicates the adaptability and robustness of the controller.