DocumentCode
1499973
Title
Design optimisation of a resonant turn-off snubber for high-power converters
Author
Mouton, H.Du.T. ; Combrink, F.W. ; Enslin, J.H.R. ; Akagi, H.
Author_Institution
Dept. of Electr. & Electron. Eng., Stellenbosch Univ., South Africa
Volume
148
Issue
3
fYear
2001
fDate
5/1/2001 12:00:00 AM
Firstpage
229
Lastpage
236
Abstract
An active resonant turn-off snubber suited for high-power IGBT converters is presented. The main feature of the snubber is that the maximum current rating of the auxiliary switching devices is small compared with that of the main switches. The basic operation of the snubber is described. This is followed by a detailed analysis of the losses in the circuit, which gives rise to an optimum snubber design procedure. An experimental version of the snubber is evaluated on an IGBT phase-arm, and detailed measurements of the efficiency of the converter are taken. The experimental results are in close agreement with the theoretical predictions
Keywords
insulated gate bipolar transistors; losses; power convertors; snubbers; switching circuits; IGBT phase-arm; active resonant turn-off snubber; auxiliary switching devices; design optimisation; high-power IGBT converters; high-power converters; losses; maximum current rating; optimum snubber design procedure; resonant turn-off snubber; snubber operation;
fLanguage
English
Journal_Title
Electric Power Applications, IEE Proceedings -
Publisher
iet
ISSN
1350-2352
Type
jour
DOI
10.1049/ip-epa:20010370
Filename
927541
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