Active Snubber Circuit for High Power Inverter Leg

Tonny Wederberg Rasmussen; Morten Holst Johansen

Active Snubber Circuit for High Power Inverter Leg

Tonny Wederberg Rasmussen, Morten Holst Johansen

Department of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

Abstract— High power converters in the conventional 6 pulse configuration with 6 switching elements IGBTs (Insulated Gate Bipolar Transistor) are pushed to the limit of power. Especially the switching loss is high. This reduces the switching frequency due to cooling problems. Passive snubber circuits have been introduced to reduce the loss even though some of the loss is removed from the IGBT to the snubber resistance. This paper takes also the next step to introduce the active Undeland snubber which in principle is lossless. The paper describes this solution together with some simulations indicating that the switching loss is reduced. Comparison between hard switched, passive and active snubber is done.

Original language	English
Title of host publication	Nordic Wind Energy Conference 2009 : Future Energy
Publication date	2009
Publication status	Published - 2009
Event	Nordic Wind Energy Conference 2009 : Future Energy - Duration: 1 Jan 2009 → … Conference number: 5

Conference

Conference	Nordic Wind Energy Conference 2009 : Future Energy
Number	5
Period	01/01/2009 → …

Keywords

switching loss
IGBT
snubber circuits

Cite this

@inproceedings{5548f8876b9f4cb5b1b8943e781a10a3,

title = "Active Snubber Circuit for High Power Inverter Leg",

abstract = "Abstract— High power converters in the conventional 6 pulse configuration with 6 switching elements IGBTs (Insulated Gate Bipolar Transistor) are pushed to the limit of power. Especially the switching loss is high. This reduces the switching frequency due to cooling problems. Passive snubber circuits have been introduced to reduce the loss even though some of the loss is removed from the IGBT to the snubber resistance. This paper takes also the next step to introduce the active Undeland snubber which in principle is lossless. The paper describes this solution together with some simulations indicating that the switching loss is reduced. Comparison between hard switched, passive and active snubber is done.",

keywords = "switching loss, IGBT, snubber circuits",

author = "Rasmussen, {Tonny Wederberg} and Johansen, {Morten Holst}",

year = "2009",

language = "English",

booktitle = "Nordic Wind Energy Conference 2009",

note = "Nordic Wind Energy Conference 2009 : Future Energy ; Conference date: 01-01-2009",

}

TY - GEN

T1 - Active Snubber Circuit for High Power Inverter Leg

AU - Rasmussen, Tonny Wederberg

AU - Johansen, Morten Holst

N1 - Conference code: 5

PY - 2009

Y1 - 2009

N2 - Abstract— High power converters in the conventional 6 pulse configuration with 6 switching elements IGBTs (Insulated Gate Bipolar Transistor) are pushed to the limit of power. Especially the switching loss is high. This reduces the switching frequency due to cooling problems. Passive snubber circuits have been introduced to reduce the loss even though some of the loss is removed from the IGBT to the snubber resistance. This paper takes also the next step to introduce the active Undeland snubber which in principle is lossless. The paper describes this solution together with some simulations indicating that the switching loss is reduced. Comparison between hard switched, passive and active snubber is done.

AB - Abstract— High power converters in the conventional 6 pulse configuration with 6 switching elements IGBTs (Insulated Gate Bipolar Transistor) are pushed to the limit of power. Especially the switching loss is high. This reduces the switching frequency due to cooling problems. Passive snubber circuits have been introduced to reduce the loss even though some of the loss is removed from the IGBT to the snubber resistance. This paper takes also the next step to introduce the active Undeland snubber which in principle is lossless. The paper describes this solution together with some simulations indicating that the switching loss is reduced. Comparison between hard switched, passive and active snubber is done.

KW - switching loss

KW - IGBT

KW - snubber circuits

M3 - Article in proceedings

BT - Nordic Wind Energy Conference 2009

T2 - Nordic Wind Energy Conference 2009 : Future Energy

Y2 - 1 January 2009

ER -

Active Snubber Circuit for High Power Inverter Leg

Abstract

Conference

Keywords

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Cite this