DocumentCode
287381
Title
GTO traction chopper with snubber energy recovery
Author
Faddoul, R.Y. ; Whiting, J.M.W.
Author_Institution
GEC-Alsthom Traction Ltd., Manchester, UK
fYear
1993
fDate
13-16 Sep 1993
Firstpage
276
Abstract
The sequential operation of a snubber energy recovery circuit for a traction propulsion GTO chopper is described, with explanatory waveforms. The circuit has no additional active components. It has fewer components than the conventional circuit and results in lower GTO switching losses. The application of the circuit to vehicles of the Mass Transit Railway Corporation in Hong Kong is described. In this application, the low GTO losses resulting from the new circuit enabled the chopper equipment to be naturally ventilated and the heat sinks to be electrically isolated from the power semiconductors and earthed
Keywords
choppers (circuits); electric propulsion; overcurrent protection; switching circuits; thyristor applications; traction; GTO traction chopper; Hong Kong; application; earthing; electric propulsion; heat sinks; isolation; power semiconductors; railways; sequential operation; snubber energy recovery; switching losses; thyristor applications; ventilation;
fLanguage
English
Publisher
iet
Conference_Titel
Power Electronics and Applications, 1993., Fifth European Conference on
Conference_Location
Brighton
Type
conf
Filename
265099
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