Control strategy of a cross-phase-connected unified power quality conditioner

Author

Li, G.J. ; Ma, Fa-Jun ; Choi, S.S. ; Zhang, X.P.

Author_Institution

Key Lab. of Control of Power Transm. & Transformation, Minist. of Educ., Dept. of Electr. Eng., Shanghai Jiao Tong Univ., Shanghai, China

Volume

5

Issue

5

fYear

2012

fDate

5/1/2012 12:00:00 AM

Firstpage

600

Lastpage

608

Abstract

A three-phase unified power quality conditioner (UPQC) with cross-phase connection is investigated. The UPQC is designed to mitigate voltage sags/swells, including those resulting from single-phase faults. Based on an analysis of the configuration of the conditioner, multi-loop control schemes are proposed for the voltage and current compensation strategies. The practicability of the topology and the effectiveness of the control schemes are verified through simulations using PSCAD/EMTDC. The results demonstrate the proposed control strategy for the cross-phase-connected UPQC is capable of regulating load terminal voltage and compensating load current changes simultaneously and effectively.

Keywords

compensation; electric current control; load regulation; power supply quality; voltage control; EMTDC; PSCAD; UPQC; crossphase connection; current compensation; load terminal voltage regulation; multiloop control scheme; unified power quality conditioner; voltage compensation; voltage sags mitigation; voltage swell;

fLanguage

English

Journal_Title

Power Electronics, IET

Publisher

iet

ISSN

1755-4535

Type

jour

DOI

10.1049/iet-pel.2011.0272

Filename

6226922