Design of a high-voltage GTO chopper for traction drive

Author

Saadate, Shahrokh ; Le Doeuff, Rene ; Periot, Robert

Author_Institution

Green, Ensem, Nancy, France

Volume

38

Issue

1

fYear

1991

fDate

2/1/1991 12:00:00 AM

Firstpage

51

Lastpage

56

Abstract

A chopper operating at 4000 V and 800 A RMS using two large series-connected GTOs (4500 V, 2500 A) is designed. The series connection of GTOs is considered, including criteria for the selection of GTOs, design of snubbers, and adaption of GTO controls. The advantages and drawbacks of the strategies used are discussed. Detailed experimental results concerning the GTOs´ commutations and the snubber circuits are presented. The influence of important parameters, such as the load current on the transient voltage distribution on the GTOs is discussed. Because series connection of GTOs is liable to be used in the high-voltage converters of rail traction systems, two industrial realizations are proposed

Keywords

choppers (circuits); electric drives; railways; thyristor applications; traction; transients; 2500 A; 4500 V; 800 A; 8000 V; commutation; high-voltage GTO chopper; high-voltage converters; load current; rail traction systems; series connection; snubbers; traction drive; transient voltage distribution; Capacitors; Choppers; Circuits; Helium; Inductors; Rails; Resistors; Snubbers; Thyristors; Voltage;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.103484

Filename

103484