Grid Connected Photovoltaic Using Multi Level Inverter

Abstract

This thesis presents Photovoltaic energy (PV) connected to three phase grid through back to back converter. It studies the maximum power point tracking (MPPT) for photovoltaic by two different methods. First method is traditional one which is called incremental conductance method. In order to enhance the efficiency of tracking an intelligent method called particle swarm optimization (PSO) is used . A Back to Back converter composed of boost DC chopper and multi- level inverter (MLI) are used . Dc chopper is connected directly to the PV and is controlled to get MPPT .The MLI is used to interface with utility grid. This Thesis deals also with the partial shading condition (PSC) phenomena which occurs most of the time .