Control system for an electric locomotive having AC to DC conver

Electric power conversion systems – Current conversion – Having plural converters for single conversion

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363 84, 363125, 323207, 323211, H02M 7155

Patent

active

047002832

ABSTRACT:
An electric locomotive has two AC-DC converters which are connected in cascade, and a power factor controller is connected to one of the converters. Two automatic pulse phase shifters are provided for the two converters and controlled by a signal responding to a difference signal between a current flowing in the converters and a reference signal. One of the input signals of the automatic pulse phase shifter is regulated by a bias signal. The output from each of the automatic pulse phase shifters to each of the converters is switched when the measured speed of the locomotive exceeds a predetermined reference speed signal.

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patent: 4420713 (1983-12-01), Chandran et al.
patent: 4471421 (1984-09-01), Brown et al.
patent: 4555752 (1985-11-01), Kurosawa
patent: 4570111 (1986-02-01), Sato

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