Design and Implementation Maximum Power Point Tracker (MPPT) Flyback Converter Using Fuzzy Logic Controller

Abstract

Photovoltaic (PV) system generally used as a distributed generating unit source, one of important factor to maximize the efficiency of PV system is Maximum Power Point Tracker (MPPT). MPPT is used to eliminate the weakness of PV that very dependent on the ability of the device to perform operation at the optimal point. MPPT also used to extract the maximum power from the PV array, maximum power can be achieved by tracking the Maximum Power Point (MPP) using a control method such as Fuzzy Logic Controller (FLC). FLC is also used to control flyback converter and stabilze the output voltage. FLC used power of PV as an input and duty cycle as an output, with 7 membership function input and 7 membership function output. This paper discusses about designing of MPPT using flyback converter with FLC. The simulation work (using Matlab) exibit and evaluate the method under different conditions (temperature and irradiance). Based on the simulation result, a PV system using MPPT can maintain the power efficiency more than 85% and stabilize the output voltage according to the setting point for battery charger.