Grid Connected Pv Based Inverter With Power Factor Correction

Abstract

Growing concerns about environmental issues and the world energy crisis have attracted a great deal of interests for the development and application of the photo- voltaic (PV) power system that uses the non-polluting and renewable solar energy. The Photovoltaic (PV) technology is now available for industrial, commercial and residential consumers and PV plants connected to the utility grid is gaining more and more application. The project involves dynamic switching modulation in the inverter according to the dc level obtained so as to ascertain the constant AC output which would be supplied to the grid. The major issues which would be addressed in this project are to maintain a unity power factor at the point of coupling to the grid, maintain output according to load requirement and detection and elimination of islanding while connecting it to the grid. The proposed inverter employs a single phase two level H- bridge inverter which receives a DC supply from MPPT based DC-DC converter and the output is given to the grid through a high frequency transformer.In order to achieve unity power factor at the grid side PI current control technique would be implemented.