조명전기설비학회논문지 (Journal of the Korean Institute of Illuminating and Electrical Installation Engineers)

  • 제28권12호
  • /
  • Pages.108-115
  • /
  • 2014
  • /
  • 1229-4691(pISSN)
  • /
  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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단상 UPS 시스템의 모드 절환 시퀀스 및 제어

Mode Transfer Sequence and Control of Single-phase UPS System

  • 이상석 (성균관대 전자전기컴퓨터공학부) ;
  • 이순령 (성균관대 전자전기컴퓨터공학부) ;
  • 최봉연 (성균관대 전자전기컴퓨터공학부) ;
  • 이정효 (LG이노텍) ;
  • 원충연 (성균관대 전자전기컴퓨터공학부)
  • 투고 : 2014.10.20
  • 심사 : 2014.11.28
  • 발행 : 2014.12.31
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초록

Recently, Uninterruptible power supply(UPS) is spotlighted from concern about black out, due to reserve power problem caused by increased power consumption. When fault occurs on the grid, UPS system supplies power to loads instead of the grid. Also, it is an advantage of possible operation as Energy storage system(ESS). Bi-directional power control of AC/DC Pulse width modulation(PWM) converter is essential for grid-connected UPS system. And, mode transfer control has to be performed considering phase and dynamic characteristic under grid condition. In this paper, control of mode transfer and bi-directional power control of AC/DC PWM converter is proposed for UPS system. Also, it is verified by simulation and experimental results.

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참고문헌

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