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The Reference Wave Generator for Dynamic Voltage Restorers by use of PQR Instantaneous Power Theory  

김효성 (천안공업대학 제어계측과)
이상준 ((주)로템 중앙연구소)
설승기 (서울대학교 전기ㆍ컴퓨터공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.8, no.5, 2003 , pp. 435-441 More about this Journal
Abstract
Dynamic Voltage Restorers (DVR)s are known as the best effective and economic means to compensate for voltage sags and swells. This paper proposes a novel method to generate reference voltages synchronized with the grid whether the line voltages are distorted by a fault or not. The proposed reference wave generator (RWG) looks for the original wave forms from the corrupted line voltages and synthesizes the expected positive sequence reference waves for DVRs. There is no transient problem on the generated reference waves when the line voltages are distorted by the fault.
Keywords
Power Qulaity; Dynamic Voltage Restorer (DVR); PLL; Reference Wave Generator (RWG);
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