A new mathematical model and control of D-StatCom for operation under unbalanced conditions

被引：31

作者：

Blazic, B ^{[1
]}

Papic, I ^{[1
]}

机构：

[1] Univ Ljubljana, Fac Elect Engn, SI-1000 Ljubljana, Slovenia

来源：

ELECTRIC POWER SYSTEMS RESEARCH | 2004年 / 72卷 / 03期

关键词：

unbalanced conditions; D-StatCom; mathematical model; decoupled control algorithm;

D O I：

10.1016/j.epsr.2004.04.012

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper discusses the operation of a distribution static compensator (D-StatCom) under unbalanced conditions when the compensator exchanges also negative-sequence currents with the network. Unbalanced conditions, for example, occur when the D-StatCom is used for the compensation of unbalanced loads or in the case of an unbalanced network voltage. A new control algorithm based on the D-StatCom mathematical model for unbalanced conditions is presented. The algorithm enables effective operation of D-StatCom with independent control of the positive- and negative-sequence currents. Furthermore, the problem of low-frequency harmonics generation is solved with an appropriate modulation of the switching function enabling the use of a relatively small capacitor on the dc side. The developed control algorithm is tested by means of digital simulation. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：279 / 287

页数：9

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