Stepper motor drive for on load tapchanger in electric locomotive
- Indian Railway Inst. of Electrical Engineering, Nasik (India)
Indian Railways have a fleet of 2,200 electrical locomotives running on 25 KV ac traction. An on-load tap changer is used to select voltage for speed control of dc traction motor. A four stroke reciprocating type air motor is used presently to drive the tap changer (GR). Complex gear and camshaft mechanism is used to move tap changer and to generate various logic signals for safe loco operation. The annual failure rate for tap changer and its drive is of the order of 20%. A microprocessor controlled stepper motor drive has been designed and constructed to drive the on-load tap changer. A current controlled chopper is used to drive the motor and control logic has been generated through an optimum hardware and software combination. The assembly has been tested on a prototype tap changer in the laboratory.
- OSTI ID:
- 474547
- Report Number(s):
- CONF-9601119-; ISBN 0-7803-2795-0; TRN: IM9723%%440
- Resource Relation:
- Conference: IEEE international conference on power electronics, drives and energy systems for industrial growth (PEDES 96). Vols I & II, New Delhi (India), 8-11 Jan 1996; Other Information: PBD: 1995; Related Information: Is Part Of 1996 international conference on power electronics, drives and energy systems for industrial growth: Proceedings. Volume 2; Murthy, S.S.; Roy, S. [eds.] [Indian Inst. of Tech., New Delhi (India)]; Divan, D. [ed.] [Univ. of Wisconsin, Madison, WI (United States)]; Doradla, S.R. [ed.] [Indian Inst. of Tech., Kanpur (India)]; Murthy, B.V. [ed.] [General Motors, Detroit, MI (United States)]; PB: 472 p.
- Country of Publication:
- United States
- Language:
- English
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