A voltage regulator using multi-parallel-connected series-voltage compensators

Author

Cheung, Victor Sui-pung ; Chung, Henry Shu-Hung ; Lo, Alan Wai-lun

Author_Institution

Centre for Smart Energy Conversion & Utilization Res., City Univ. of Hong Kong, Kowloon Tong, China

fYear

2014

fDate

14-18 Sept. 2014

Firstpage

3687

Lastpage

3693

Abstract

A modular and scalable concept of voltage regulation for enhancing service continuity and increasing power rating in single-phase series voltage regulator is proposed. It is based on paralleling multiple series-voltage compensators, namely Multi-Parallel-Connected SeriesVoltage Compensator (MSVC), to perform output voltage regulation. The output current of each compensator is coupled to another one through a coupling transformer. Thus, the load current is shared near-equally among the compensators. The operating principle, the steady-state and transient current-sharing characteristics will be described and discussed. A 3kVA MSVC test bed with three parallel-connected compensator units has been built and evaluated.

Keywords

voltage control; voltage regulators; MSVC; coupling transformer; load current; multiparallel-connected series-voltage compensators; multiple series-voltage compensators; output voltage regulation; parallel-connected compensator units; service continuity enhancement; single-phase series voltage regulator; Couplings; Regulators; Static VAr compensators; Steady-state; Switches; Transient analysis; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2014 IEEE

Conference_Location

Pittsburgh, PA

Type

conf

DOI

10.1109/ECCE.2014.6953902

Filename

6953902