A-C or D-C to D-C converter for dual current locomotives with D-

Details A-C or D-C to D-C converter for dual current locomotives with D- A-C or D-C to D-C converter for dual current locomotives with D-

1984-12-10

1987-02-03

Salce, Patrick R.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 88, 363142, 318441, 307 72, H02M 900

Patent

active

046412344

ABSTRACT:
The present invention relates to supplying a load either from a direct-current source or from an alternating-current source. The power unit, according to the invention, is characterized in that it consists of a single conversion unit (CV) having unidirectional semi-conductor power components forming switches (I1, I2, I3, I4) controlled in appropriate fashion by a logic control in such a manner as to ensure the functioning of the conversion unit (CV) either in a chopper mode, or in a rectifier mode when the load functions to draw power, or to ensure energy regeneration when the load functions in a generating mode. The present invention has application particularly for supplying direct-current motors used in dual-current railroad locomotives.

REFERENCES:
patent: 3434034 (1969-03-01), Garber et al.
patent: 3940680 (1976-02-01), Tadokoro et al.
patent: 4088937 (1978-05-01), Uchida et al.

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