Development of Hardware in Loop Simulation of Grid Connected Photovoltaic System

This paper describes an ideal topology for inverters in a grid connected photovoltaic (PV) system. The Multistring inverter topology will improve the reliable operation of the Photovoltaic (PV) system because of independent control of each string will enhance the efficiency of the system. An efficient voltage control scheme is presented to control the Maximum Power Point Tracking (MPPT) and the inverter. The three phase two level voltage source inverter (VSI) has been used to validate the concept of Multistring. The simulation results have been presented to verify the proposed topology. An experimental prototype has been developed in the laboratory and dSPACE DS1103 is used to generate the signals for real time implementation.