Design of a Shunt Active Power Filter with Grid Connected Inverter Control for a Photovoltaic System

Abstract

In this thesis, a shunt active filter (SAF) has been designed for a PV system. Due to the presence of nonlinear load and the inverter connected to the photovoltaic system, harmonics appear in the load current. Hence, to reduce the harmonics, a shunt active filter is connected between the inverter and the load at the point of common coupling. The power quality is improved by reducing the THD. The SAPF connected to PV system has been implemented using MATLAB/SIMULINK. From the obtained results, it is seen that the PV system with shunt active filter provides reduced THD. Further, the inverter control for integrating the PV system to the grid is presented. The three phase inverter works as a multi-functional device and it is used to supply the power to the grid as power converter as well as harmonic eliminator. The inverter control has simulated using MATLAB/SIMULINK. This control strategy incorporates PQ solution as in shunt active power filter technique to reduce harmonics in the current due to non-linear loads in the system and also the THD value is reduced