Analysis of series compensation and DC-link voltage controls of a transformerless self-charging dynamic voltage restorer

被引：63

作者：

Sng, EKK ^{[1
]}

Choi, SS ^{[1
]}

Vilathgamuwa, DM ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Ctr Adv Power Elect, Singapore 2263, Singapore

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2004年 / 19卷 / 03期

关键词：

AGDC; DGAC power conversion; dynamics; inverters; power control; transformerless; voltage compensation; voltage control; voltage sag;

D O I：

10.1109/TPWRD.2004.829866

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 describes a transformerless self-charging dynamic voltage restorer (DVR) series compensation device used to mitigate voltage sags. A detailed analysis on the control of the restorer for voltage sag mitigation and dc-link voltage regulation are presented. A nonlinear element is shown to exist in the regulator, the activation of which can adversely affect its stability. Active cancellation for this element is recommended. Simulation and experimental results are presented for a 1-kVA prototype to validate the analysis as well as demonstrate the DVR's performance under both voltage restoration and self-charging operating conditions.

引用

页码：1511 / 1518

页数：8

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