Steady State Power Flow Analysis of Unified Power Quality Conditioner (UPQC)

Abstract

This paper deals with the steady state analysis of unified power quality conditioner (UPQC). The UPQC, a combination of shunt and series active power filter (APF), is one of the best solutions towards the mitigation of voltage sags and swells problems on distribution network. The analysis is based on active and reactive power flow through the shunt and series APF, wherein series APF can absorb or deliver the active power whereas the reactive power requirement is totally handle by shunt APF alone during all conditions. This analysis is very useful for selection of kVA ratings for both shunt and series APF. The MATLAB / SIMULINK results are provided in order to verify the analysis.