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Overvoltage Snubber for a Diode-Clamped 3-level IGBT Inverter  

Jung, Jae-Hun (부경대 대학원 전기공학과)
Song, Woong-Hyub (부경대 대학원 전기공학과)
Nho, Eui-Cheol (부경대 전기제어공학부)
Kim, In-Dong (부경대 전기제어공학부)
Kim, Heung-Geun (경북대 전자전기공학부)
Chun, Tae-Won (울산대 전기전자정보시스템공학부)
Yoo, Dong-Wook (한국전기연구원)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.14, no.6, 2009 , pp. 514-521 More about this Journal
Abstract
This paper deals with a new overvoltage snubber for a diode-clamped 3-level IGBT inverter. Usually most power converters use snubber circuits to protect the switching devices from voltage spike. However, it is difficult for the diode-clamped multi-level converter to be protected from voltage spike with overvoltage snubber since the series connection of the switching devices. To solve the problem the characteristic of a overvoltage snubber for a DC-DC converter is analyzed, and a new snubber for a diode clamped 3-level inverter is proposed. The performance of the proposed snubber is verified through experiments.
Keywords
Overvoltage Snubber; Diode Clamped 3-level Inverter;
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  • Reference
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