Simulation and implementation of MPPT techniques in a PV system

Abstract

Solar power,a clean renewable resource with zero emission unlike the fossil generated electricity and has a tremendous potential of energy which can be harvested using solar panels to be available for industrial and domestic use .The extraction of maximum power with changing environmental conditions is one of the significant concerns with photovoltaic(PV) systems,therefore using MPPT techniques is essential to keep the extracted power as close as possible to the maximum power .This report presents a comparative study between maxi- mum power point tracking (MPPT) methods in Matlab/Simulink program that are perturb-and- observe, incremental conductance ,fractional short circuit current and fractional open circuit voltage . Starting by designing a Pv system and sizing all the necessary components to build the buck converter circuit that is used as an interface to charge a lead acid battery .The control of the system is established by the MPPT techniques at different solar-radiation and temperature levels . Finally the simulations result are presented.