Title :
A Novel Structure for Three-Phase Four-Wire Distribution System Utilizing Unified Power Quality Conditioner (UPQC)
Author :
Khadkikar, V. ; Chandra, A.
Author_Institution :
Dept. de Genie Electrique, Ecole de Technol. Superieure, Montreal, Que.
Abstract :
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.
Keywords :
distribution networks; invertors; mathematics computing; power engineering computing; power supply quality; power transformers; 3P4W distribution system; MATLAB; Simulink; UPQC; VSI topology; neutral current; series transformer; three-phase four-wire distribution system; unified power quality conditioner; voltage source inverter; Conductors; Control systems; Inverters; Pollution; Power distribution; Power generation; Power harmonic filters; Power quality; Power system harmonics; Wire; Active Power Filter (APF); Four-Leg Voltage Source Inverter (VSI) Structure; Three Phase Four Wire System; Unified Power Quality Conditioner (UPQC);
Conference_Titel :
Power Electronics, Drives and Energy Systems, 2006. PEDES '06. International Conference on
Conference_Location :
New Delhi
Print_ISBN :
0-7803-9772-X
Electronic_ISBN :
0-7803-9772-X
DOI :
10.1109/PEDES.2006.344237
