Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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State monitoring of inverter using auxiliary circuit

보조회로에 의한 인버터 상태 감시

  • Baek, J.W. (Industrial Electric Research Center, KERI) ;
  • Lee, B.K. (Industrial Electric Research Center, KERI) ;
  • Kim, T.J. (Industrial Electric Research Center, KERI) ;
  • Choi, Y.G. (Industrial Electric Research Center, KERI) ;
  • Kim, G.H. (Industrial Electric Research Center, KERI)
  • 백주원 (한국전기연구원 산업전기연구단) ;
  • 이병국 (한국전기연구원 산업전기연구단) ;
  • 김태진 (한국전기연구원 산업전기연구단) ;
  • 최영길 (한국전기연구원 산업전기연구단) ;
  • 김광화 (한국전기연구원 산업전기연구단)
  • Published : 2003.07.21
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Abstract

The diagnosis of power converter using auxiliary circuit connected to output terminal is proposed and verified by experimental results in this paper. On contrary to conventional diagnosis method, the proposed monitoring technique is possible to measure the state of power converter and unbalanced output caused by a misfiring of switch and unusual control signal. Conventional method gives a monitoring approaches for only a unusual operation of power converter. In this paper, three signals with auxiliary circuit are obtained and analyzed to see the state of electrolytic capacitor, power semiconductor switches and output voltage balance. 2kVA inverter is made and fisted to verify the proposed circuit.

Keywords