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Voltage Control Strategy of new 3-phase Line-Interactive UPS System using AC Line Reactor and Parallel-Series Active Filter  

Ji, Jun-Keun (순천향대 공대 정보기술공학부)
Kim, Jang-Hwan (삼성전자 생산기술연구소)
Sul, Seung-Ki (서울대 전기.컴퓨터공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.56, no.3, 2007 , pp. 538-546 More about this Journal
Abstract
A new 3-phase line-interactive UPS(Uninterruptible Power Supply) system with parallel-series active power-line conditioning capability using AC line reactor and two four-leg PWM VSCs(Voltage Source Converters) was introduced recently. In this paper, the strategy of voltage control in suggested UPS system is explained. The objective of proposed voltage controllers in parallel(shunt) and series PWM VSC is to guarantee satisfactory characteristics in steady state and transient state. Therefore the experimental results to prototype UPS system having power rating of 60kVA is shown to prove the verification of voltage control strategy.
Keywords
AC 라인 리액터;병렬 및 직렬 능동필터;3상 Line-Interactive UPS(Uninterruptible Power Supply);전압제어;
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