Development considerations of DSP-controlled PWM VSC-based STATCOM

Author

Xu, L. ; Agelidis, V.G. ; Acha, E.

Author_Institution

Strathclyde Centre for Econ. Renewable Power Delivery, Inter-Univ. Glasgow, UK

Volume

148

Issue

5

fYear

2001

fDate

9/1/2001 12:00:00 AM

Firstpage

449

Lastpage

455

Abstract

The paper addresses key issues surrounding the development of static VAr compensators (STATCOM). The STATCOM is based on a conventional six-switch bi-directional voltage-source convertor topology using insulated gate bipolar transistors. The sinusoidal pulse-width modulation technique is used to control the convertor output voltage (amplitude and phase). Three DC voltage control methods and the trade-off between the value of the DC capacitor and the ripple voltage and the system´s transient response time are investigated. The system´s control, incorporating a VAr calculator and synchronisation, is implemented on a digital signal-processing board, to achieve excellent overall performance. Experimental results for both leading and lagging VAr compensation, along with changes between them, confirm the good performance and the flexibility of the developed prototype

Keywords

PWM power convertors; digital control; digital signal processing chips; insulated gate bipolar transistors; static VAr compensators; switching circuits; synchronisation; voltage control; DC capacitor value; DC voltage control methods; DSP-controlled PWM VSC-based STATCOM; convertor output voltage control; digital signal-processing board; insulated gate bipolar transistors; lagging VAr compensation; leading VAr compensation; ripple voltage; sinusoidal pulse-width modulation; six-switch bi-directional voltage-source convertor; static VAr compensators; synchronisation; transient response time;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1039/ip-epa:20010527

Filename

955381