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A Novel Structure for Three-Phase Four-Wire Distribution System Utilizing Unified Power Quality Conditioner (UPQC)

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2 Author(s)
V. Khadkikar ; Student Member, IEEE, Département de génie électrique, École de technologie supérieure, Montréal, Québec, H3C 1K3, Canada. e-mail: v ; A. Chandra

This paper presents a novel structure for three-phase four-wire (3P4W) distribution system utilizing unified power quality conditioner (UPQC). The 3P4W system is realized from three-phase three-wire (3P3W) system where the neutral of series transformer used in series part UPQC is considered as the fourth wire for 3P4W system. A new control strategy to balance the imbalanced load currents is also presented in this paper. The neutral current that may flow towards transformer neutral point is compensated by using a four-leg voltage source inverter (VSI) topology for shunt part. Thus the series transformer neutral will be at virtual zero potential during all operating conditions. The simulation results based on MATLAB/Simulink are presented to show the effectiveness of proposed UPQC based 3P4W distribution system.

Published in:

Power Electronics, Drives and Energy Systems, 2006. PEDES '06. International Conference on

Date of Conference:

12-15 Dec. 2006