Improving Power Quality of Full Wave Rectifier Using UPQC with Fuzzy Controller

Abstract

To enhance power quality (PQ) of rectifier a technique using Voltage Source Inverter (VSI) based Unified Power Quality Conditioner (UPQC) with Fuzzy Logic Controller (FLC) is discussed in this paper. UPQC is moderately a new member of power device family that improves PQ of distribution system. UPQC made up of shunt and series active filters (APF). The primary center is on the control arrangement of UPQC that reduce the harmonic effects of voltage and current all the while. By controlling firing angle, harmonics distortions are decreased. The simulation of proposed system is done by utilizing MATLAB/ Simulink. Simulation results of proposed system show reduction in total harmonic distortions. For better performance, FLC is added in control algorithm of UPQC to decrease sag levels of output values.