High voltage, chopper for electrical traction applications using series connection of large GTO thyristors

Author

Saadate, S. ; Le Doeuff, R. ; Periot, R.

Author_Institution

GREEN, ENSEM, Nancy, France

fYear

1989

fDate

6-10 Nov 1989

Firstpage

177

Abstract

The authors present considerations for the series connection of GTOs (gate turn-off thyristors). Criteria for the selection of GTOs, design of snubbers, and adoption of GTO control are given. The advantages and drawbacks of the strategies used are discussed. Detailed experimental results concerning the GTO commutations and the snubber circuit are presented. The influence of important parameters, such as the load current, on the transient and steady-state voltage distribution on the GTOs is discussed. As series connection of GTOs is liable to be used in the high-voltage static converters utilized in rail traction systems, two industrial realizations are considered

Keywords

choppers (circuits); power convertors; railways; thyristor applications; traction; GTO commutations; GTO control; GTO thyristors; chopper; electrical traction; gate turn-off thyristors; high-voltage static converters; load current; rail traction systems; snubbers; steady-state voltage distribution; transient voltage distribution; Capacitors; Choppers; Circuits; Delay; Rails; Snubbers; Steady-state; Thyristors; Voltage control; Wiring;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 1989. IECON '89., 15th Annual Conference of IEEE

Conference_Location

Philadelphia, PA

Type

conf

DOI

10.1109/IECON.1989.69631

Filename

69631