Line-Interactive Single-Phase Dynamic Voltage Restorer With Novel Sag Detection Algorithm

被引：45

作者：

Bae, B. ^{[1
]}

Lee, J. ^{[2
]}

Jeong, J. ^{[2
]}

Han, B. ^{[2
]}

机构：

[1] LS Ind Syst Co Ltd, Res Engn HVDC Res Team R&D Ctr, Anyang 431080, South Korea

[2] Myongji Univ, Dept Elect Engn, Myongji 449728, South Korea

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2010年 / 25卷 / 04期

关键词：

Discrete Fourier transform (DFT); dynamic voltage restorer (DVR); line-interactive; phase-locked loop (PLL); root mean square (rms) variation detector; voltage sag or interruption; DVR; LEVEL;

D O I：

10.1109/TPWRD.2010.2044194

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 the development of a line-interactive single-phase dynamic voltage restorer (DVR) with a novel sag detection algorithm. The developed detection algorithm has a hybrid structure composed of an instantaneous detection part and the root-mean-square (rms) variation detection part. The source voltage passes through the instantaneous sag detection part. If instantaneous sag is detected, the rms variation detector-1 is selected to calculate the rms variation. The rms variation detector-2 is selected when the instantaneous sag occurs under the operation of the rms variation detector-1. The feasibility of proposed algorithm was verified through computer simulations and experimental works with a 3-kVA-rating prototype of line-interactive DVR. The line-interactive DVR with the proposed algorithm can compensate the input voltage sag or interruption within 2.0-ms delay. The developed DVR can be effectively utilized for the sensitive loads, such as a computer, communication device, and automation device.

引用

页码：2702 / 2709

页数：8

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