Direct current motor control device for use in battery automobil

Details Direct current motor control device for use in battery automobil Direct current motor control device for use in battery automobil

1973-12-12

1978-02-21

Schaefer, Robert K.

Electricity: motive power systems

Battery-fed motor systems

318442, 318342, H02p 500

Patent

active

040755410

ABSTRACT:
A direct current motor control device for use in battery automobiles comprises a direct current motor to be driven by a plurality of battery groups each battery group delivering an equal voltage. The device comprises a battery change-over thyristor circuit inclusive of a chopper circuit and can control the voltage applied to the motor by means of the chopping operation of the chopping circuit and the series-parallel change-over operation for the battery groups. The series-parallel change-over operation of the battery groups is automatically effected in response to the signal for controlling the control signal of time ratio for the chopper circuit.

REFERENCES:
patent: 3280397 (1966-10-01), Bruns
patent: 3384758 (1968-05-01), Kelley
patent: 3387194 (1968-06-01), Banks
patent: 3530356 (1970-09-01), Aronson
patent: 3728599 (1973-04-01), Minami
patent: 3853059 (1973-08-01), Berman

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