Operating principles of shunt STATCOM based on 3-level diode-clamped converters

Author

Ooi, Boon Teck ; Joos, Geza ; Huang, Xiaogang

Author_Institution

Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada

Volume

14

Issue

4

fYear

1999

fDate

10/1/1999 12:00:00 AM

Firstpage

1504

Lastpage

1510

Abstract

This paper offers a novel topology for the implementation of a shunt STATCOM based on a grouping of four three-level, diode-clamped power converters, switching at line frequency and coupled to the AC system through wye/wye and wye/delta phase-shifting transformers. Advantages include direct voltage control through the gating pattern and reduced size of DC capacitor. The dominant harmonic on the AC side is the 11th and on the DC side the 12th. The proposed STATCOM can meet typical harmonic distortion requirements

Keywords

flexible AC transmission systems; power convertors; power transformers; static VAr compensators; switching circuits; DC capacitor; direct voltage control; gating pattern; harmonic distortion requirements; line frequency; operating principles; shunt STATCOM; three-level diode-clamped power converters; wye/delta phase-shifting transformers; wye/wye phase-shifting transformers; Analog-digital conversion; Automatic voltage control; Capacitors; Diodes; Frequency conversion; Phase distortion; Shunt (electrical); Switching converters; Topology; Voltage control;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.796247

Filename

796247