Title: A current source inverter-based unified power quality conditioner for mitigation of voltage and current harmonics

Authors: Abdul Hamid Bhat; Anupam Kumar; Arfat Firdous

Addresses: Electrical Engineering Department, NIT Srinagar, Kashmir, India ' Electrical Engineering Department, NIT Srinagar, Kashmir, India ' Department of Physics, Islamia College of Science and Commerce, Srinagar, Kashmir, India

Abstract: This paper presents an analysis of current source inverter (CSI)-based unified power quality conditioner (UPQC) to improve the electric power quality at distribution levels. In recent years unified power quality conditioner (UPQC) is being used as a universal active power conditioning device to mitigate both voltage as well as current harmonics in a polluted power system network. Fabrication of UPQC is done implying both current source and voltage source inverter. Current source UPQC has unique advantages over generalised voltage source-based UPQC. Reference and switching signals are derived using a simple PI controller and robust hysteresis band PWM technique respectively. The resultant compensation system eliminates voltage as well as current harmonics with good dynamic response. Extensive simulation results using MATLAB/Simulink and SimPowerSystems software for R-L load connected through an uncontrolled bridge rectifier is presented for performance evaluation.

Keywords: power quality conditioner; current source inverter; CSI; VSI; current harmonics; voltage harmonics; hysteresis controller; series active filter; shunt active filter; unified power quality conditioner; UPQC.

DOI: 10.1504/IJIED.2018.090404

International Journal of Industrial Electronics and Drives, 2018 Vol.4 No.1, pp.1 - 15

Received: 19 Nov 2016
Accepted: 04 Feb 2017
Published online: 15 Mar 2018 *