Fault responsive means for changing control sequence of a multip

Details Fault responsive means for changing control sequence of a multip Fault responsive means for changing control sequence of a multip

1982-09-30

1984-06-12

Dobeck, B.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Running-speed control

318 94, 318317, 318395, H02P 1304

Patent

active

044544553

ABSTRACT:
In the propulsion system of an electric locomotive, a-c wayside power is converted to direct current for the traction motors by means of several phase-controlled rectifying bridges having serially connected outputs. The bridges are controlled sequentially so that their respective output voltages are introduced in stages as increasing amounts of voltage are required at the motors of an accelerating locomotive. Normally certain thresholds of speed need to be attained before the second bridge, and later the third bridge, are permitted to be phased on. Means is provided for changing the bridge control sequence in response to faults in the first or second bridges.

REFERENCES:
patent: 3392319 (1968-07-01), McColl et al.
patent: 3849718 (1974-11-01), Forster et al.
patent: 4136305 (1979-01-01), Okumura et al.
patent: 4181932 (1980-01-01), Fujiwara
patent: 4375076 (1983-02-01), Magnusson et al.

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