대한전기학회논문지:전기기기및에너지변환시스템부문B (The Transactions of the Korean Institute of Electrical Engineers B)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

직렬 능동 보상기를 이용한 Line-Interactive UPS의 새로운 제어 기법

A New Control Scheme of the Line-Interactive UPS Using the Series Active Compensator

  • 장훈 (한양대 공학 전기공학과) ;
  • 이우철 (한양대 전기공학과) ;
  • 현동석 (한양대 공학 전기공학과)
  • 발행 : 2003.08.01
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초록

This paper presents a three-phase Line-Interactive uninterruptible power supply (UPS) system with series-parallel active power-line conditioning capabilities, using synchronous reference frame (SRF) based controller, which allows an effective power factor correction, source harmonic voltage compensation, load harmonic current suppression, and output voltage regulation. The three-phase UPS system consists of two active power compensator topologies. One is a series active compensator, which works as a voltage source in phase with the source voltage to have the sinusoidal source current and high power factor under the deviation and distortion of the source voltage. The other is a parallel active compensator which works as a conventional sinusoidal voltage source in phase with the source voltage, providing to the load a regulated and sinusoidal voltage with low THD (total harmonic distortion). The control algorithm using SRF method and the active power flow through the Line-interactive UPS systems are described and studied. The simulation and experimental results are depicted in this paper to show the effect of the proposed algorithm.

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참고문헌

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