Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Crowbar Circuit for the Overvoltage Protection Using GTO

GTO를 이용한 과전압 억제용 크로바 회로

  • Ryu, Ho-Seon (Korea Electric Power Research Institude (KEPRI)) ;
  • Lim, Ick-Hun (Korea Electric Power Research Institude (KEPRI))
  • Published : 1996.11.16
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Abstract

In the case of synchronous machines, certain power system disturbances cause current to assume negative values when no static converter is present. But the converter prevents negative current from flowing, so that overvoltages occur. The overvoltages can be effectively limited as crowbar circuit using GTO. The crowbar circuit with current limiting resistor absorbs energy when overvoltage comes from power system repeatedly. The newly proposed circuit is verified through simulation and experiment

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