Supply Grid Voltage Regulation as a STATCOM from iUPQC Controller by Hybrid Fuzzy-Pi Based

Abstract

This paper presents an improved controller for the dual topology of the unified power quality conditioner (iUPQC) with the usage of fuzzy logic controller extending its applicability in power-quality compensation, as well as in microgrid applications. Here we are using fuzzy logic controller along with PI controllers. The iUPQC will work as a static synchronous compensator (STATCOM) at the grid side, while providing also the conventional UPQC compensations at the load or micro-grid side. By using this controller, beyond the conventional UPQC power quality features, including voltage sag/swell compensation, the iUPQC will also provide reactive power support to regulate not only the load-bus voltage but also the voltage at the grid-side bus. A simulation circuit simulated by using the MATLAB/SIMULINK software version 2011a to verify the performance of the controller.