Abstract
This paper presents a novel structure for a three-phase four-wire (3P4W) distribution system utilizing unified power quality conditioner (UPQC). The 3P4W system is realized from a three-phase three-wire system where the neutral of series transformer used in series part UPQC is considered as the fourth wire for the 3P4W system. A new control strategy to balance the unbalanced load currents is also presented in this paper. The neutral current that may flow toward transformer neutral point is compensated by using a four-leg voltage source inverter 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 the proposed UPQC-based 3P4W distribution system.
Original language | British English |
---|---|
Pages (from-to) | 1897-1902 |
Number of pages | 6 |
Journal | IEEE Transactions on Industry Applications |
Volume | 45 |
Issue number | 5 |
DOIs | |
State | Published - 2009 |
Keywords
- Active power filter (APF)
- Four-leg voltage-source inverter (VSI) structure
- Three-phase four-wire (3P4W) system
- Unified power quality conditioner (UPQC)