HARMONICS REDUCTION WITH Id-Iq CONTROL STRATEGY USING FUZZY LOGIC CONTROLLER BASED THREE PHASE SHUNT ACTIVE POWER FILTER

Abstract

Shunt active power filters found the application in elimination of current harmonics in power system. The performance of such filter depends upon various factors like control methods, inverter used, and reference current generation technique. In this paper the authors have implemented fuzzy logic control technique for generation of pulses of the three phase inverter. Harmonic extraction is mainly achieved by a band pass filter in synchronous reference frame algorithm (SRF) or Id-Iq theory. The performance of the shunt active power filter is evaluated with MATLAB/ SIMULINK under balanced voltage conditions. After evaluation authors have found that the harmonic elimination is achieved satisfactorily.