An E44 electric locomotive of 5000 hp, 6 axles and 6 motors was used as a test bed to evaluate full scale use of 6 separate high power DC to DC choppers for propulsion. The normal phase control rectifier equipment was removed and replaced by a DC link at 2000 volts as the source of energy to the choppers. The choppers were then free to operate at any optimum frequency rather than being tied to the catenary frequency. Catenary power fed the link on a continuous basis thus providing a line power factor very close to unity (95%). The project was a joint venture of the Federal Railroad Administration, Conrail and The General Electric Company. The old phase controlled electronics was removed at the Erie plant of General Electric and replaced by 6 choppers with the necessary ancillary equipment. The new propulsion system was matched to the normal E44 performance. The ability to operate in multiple with other diesel locomotives was also provided.
Chopper Locomotive Demonstration Program, Phase 2
1984
55 pages
Report
Keine Angabe
Englisch
Chopper-stabilized phase detector
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