Three phase Shunt Active power filter for harmonic reduction in non linear loads

Abstract

Harmonics contamination is a serious and a harmful problem in electrical systems. Active power filtering constitutes one of the most effective proposed solutions. A shunt active power filter that achieves low current total harmonic distortion, reactive power compensation, is presented. The topology is based on IGBT's voltage inverter, intended to damp harmonics produced by a diode rectifier. The active filter used to compensate for the nonlinear load is a three-phase inverter. The Shunt Active Filter (SAF) is controlled by a Proportional- Integral (PI) controller and Fuzzy Controller (FC). They are used to shape the line current to be in phase and of the same shape as the supply voltage. The three-phase SAF configuration is simulated using MATLAB/SIMULINK.