Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

A Novel Regenerative Snubber suitable to Multi-Level Inverters with Series-Connected GTOs

직렬 연결된 GTO로 구성된 멀티레벨 인버터에 적합한 새로운 회생 스너버에 관한 연구

  • Chae, G. (Department of Electrical Engineering Korea Advanced Institute of Science and Technology) ;
  • Cho, Guk-C. (Department of Electrical Engineering Korea Advanced Institute of Science and Technology) ;
  • Jung, Gu-H. (Department of Electrical Engineering Korea Advanced Institute of Science and Technology) ;
  • Ryoo, Tae-H. (Department of Electrical Engineering Korea Advanced Institute of Science and Technology) ;
  • Cho, Gyu-H. (Department of Electrical Engineering Korea Advanced Institute of Science and Technology)
  • 채균 (한국 과학 기술원 전기 및 전자공학과) ;
  • 조국춘 (한국 과학 기술원 전기 및 전자공학과) ;
  • 정구호 (한국 과학 기술원 전기 및 전자공학과) ;
  • 류태하 (한국 과학 기술원 전기 및 전자공학과) ;
  • 조규형 (한국 과학 기술원 전기 및 전자공학과)
  • Published : 1996.07.22
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Abstract

A simple regenerative snubber structure is proposed, which is applicable to multi-level inverter with series-connected GTOs for high power applications. The novel snubber structure can solve large energy loss problems and guarantee safe operation of power converter can be achieved. The proposed new snubber has the potential of high performance and high reliability and is particularly suitable to high power and multi-level application with series connected power devices. The snubber voltage and current waveforms are analized and shown the simulation and experimental results for a GTO 3-level inverter circuit with inductive load.

Keywords