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A Study on the Detection of Unbalanced Voltages for Instantaneous Voltage Compensation  

Jeong, Hong-Ju ((주)효성 중공업연구소)
Choe, Si-Yeong ((주)효성 중공업연구소)
Jeong, Jun-Mo ((주)효성 중공업연구소)
Song, Jong-Hwan ((주)효성 중공업연구소)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.51, no.4, 2002 , pp. 203-209 More about this Journal
Abstract
This paper presents a new control scheme for a DVR(Dynamic Voltage Restorer) system consisting of series voltage source PWM converters. To control negative sequence component of source voltage the detection of negative sequence is necessary. Generally, filtering process is used tn do that. Through this filtering process has some problems. This paper suggests a new method of separating positive and negative sequences. This control system is designed using differential controllers and digital filters, and positive sequence and negative sequences are controlled respectively. The performance of the presented controller and scheme are confirmed through simulation and actual experiment by 2.5kVA prototype DVR.
Keywords
Dynamic voltage restorer; positive sequence; negative sequence; digital filter; differential controller;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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