Elimination of “Harmonic Transfer Through Converters” in VSC-Based Multiterminal DC Systems by AC/DC Decoupling

Author

Tang, Lianxiang ; Ooi, Boon-Teck

Author_Institution

Inc-Networks, Toronto

Volume

23

Issue

1

fYear

2008

Firstpage

402

Lastpage

409

Abstract

ldquoHarmonic transfer through convertersrdquo has caused waveform distortion in multiterminal dc systems based on a voltage-source converter (VSC-MTDC). The harmonic transfer can be by the positive and negative sequences or by the zero sequence. A comprehensive solution consists of decoupling the ac side from the dc side of the VSC. Such decoupling has other benefits in VSC-MTDC because disturbances on the ac side of any VSC do not propagate to other VSCs (except the VSC assigned to function as the dc Voltage Regulator). Decoupling also allows a VSC to be planned and designed independently of the other VSCs of the MTDC.

Keywords

AC-DC power convertors; harmonics suppression; AC/DC decoupling; VSC-based multiterminal DC systems; current tracking control; deadbeat; harmonic transfer; high voltage direct current; voltage-source converter; waveform distortion; Analog-digital conversion; Control systems; Converters; Frequency; Harmonic distortion; Power conversion; Power system harmonics; Pulse width modulation; Resonance; Voltage; Current tracking control; deadbeat; decoupling; harmonic transfer through converters; high voltage direct current (HVDC); multiterminal; multiterminal dc system (MTDC); resonance; uncharacteristic harmonics; voltage source converter (VSC); waveform distortion;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2007.905556

Filename

4408698