The unified power quality conditioner: the integration of series and shunt-active filters

Author

Fujita, Hideaki ; Akagi, Hirofumi

Author_Institution

Dept. of Electr. Eng., Okayama Univ., Japan

Volume

13

Issue

2

fYear

1998

fDate

3/1/1998 12:00:00 AM

Firstpage

315

Lastpage

322

Abstract

This paper deals with unified power quality conditioners (UPQCs), which aim at the integration of series-active and shunt-active power filters. The main purpose of a UPQC is to compensate for voltage flicker/imbalance, reactive power, negative-sequence current and harmonics. In other words, the UPQC has the capability of improving power quality at the point of installation on power distribution systems or industrial power systems. This paper discusses the control strategy of the UPQC, with a focus on the how of instantaneous active and reactive powers inside the UPQC. Experimental results obtained from a laboratory model of 20 kVA, along with a theoretical analysis, are shown to verify the viability and effectiveness of the UPQC

Keywords

active filters; distribution networks; harmonic distortion; industrial power systems; power filters; power supply quality; power system harmonics; 20 kVA; control strategy; harmonics compensation; industrial power systems; instantaneous active power; instantaneous reactive power; negative-sequence current; power distribution systems; reactive power; series-active power filters; shunt-active power filters; unified power quality conditioner; voltage flicker; voltage imbalance; Industrial power systems; Laboratories; Power distribution; Power filters; Power harmonic filters; Power quality; Power system harmonics; Reactive power; Reactive power control; Voltage fluctuations;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.662847

Filename

662847