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K Laxmi Priyanka and P Prasanna Lakshmi
Narasaraopeta Engineering College, Narasaraopet, Andhra Pradesh 522 601, India.

Abstract—This paper presents a new unified power-quality conditioning system (MC-UPQC), capable of simultaneous compensation for voltage and current in multibus/multifeeder systems. The series inverter of UPQC is controlled to perform simultaneous 1) voltage sag/swell compensation, and 2) load reactive power sharing with the shunt inverter. The active power control approach is used to compensate voltage sag/swell and is integrated with theory of Power Angle Control (PAC) of UPQC to coordinate the load reactive power between the two inverters. Since the series inverter simultaneously delivers active and reactive powers, this concept is named as UPQC. Therefore, power can be transferred from one feeder to adjacent feeders to compensate for sag/swell and interruption. The performance of the MC-UPQC as well as the adopted control algorithm is illustrated by simulation. The results obtained in MATLAB on a two-bus/two-feeder system show the effectiveness of the proposed configuration.

Index Terms—Power Quality (PQ), MATLAB, Unified Power-Quality Conditioner (UPQC), Voltage- Source Converter (VSC)

Cite: K Laxmi Priyanka and P Prasanna Lakshmi, "A POWER QUALITY IMPROVEMENT BY USING MC-UPQC," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 5, No. 2, pp. 62-72, April 2016.