Series connected voltage-source converter modules for force-commutated SVC and DC-transmission

Author

Kuang, Jinbo ; Ooi, Boon Teck

Author_Institution

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

Volume

9

Issue

2

fYear

1994

fDate

4/1/1994 12:00:00 AM

Firstpage

977

Lastpage

983

Abstract

In force-commutated SVC and DC transmission stations, series-connected, multi-converter modules are necessary to build up the DC link voltage rating. Based on digital simulations of 8 modules, it is shown that the total harmonic distortion (THD) of 5% can be achieved from harmonic cancellations by using phase shifting of the triangular carriers in the sinusoidal pulse width modulation technique. The requirement of the DC link capacitor size to ensure ripple-free DC voltage is studied. The 8-module case-study points to the ability to achieve 1% THD for higher voltage rating by increasing the number of modules connected in series

Keywords

DC power transmission; commutation; digital simulation; power convertors; power engineering computing; power system harmonics; pulse width modulation; static VAr compensators; DC link voltage rating; DC transmission stations; HVDC transmission; digital simulations; force-commutated SVC; harmonic cancellations; phase shifting; ripple-free DC voltage; series connected voltage-source converter modules; sinusoidal pulse width modulation; total harmonic distortion; triangular carriers; Bridge circuits; Capacitors; Frequency conversion; Phase modulation; Power harmonic filters; Pulse width modulation; Space vector pulse width modulation; Static VAr compensators; Thyristors; Voltage;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.296281

Filename

296281