Control systems of electric motors for driving electric motor ca

Details Control systems of electric motors for driving electric motor ca Control systems of electric motors for driving electric motor ca

1974-12-06

1976-10-19

Dobeck, B.

Electricity: motive power systems

Braking

Dynamic braking

318139, 318440, 318345, H02M 752

Patent

active

039873498

ABSTRACT:
In a control system of an electric motor for driving an electric motor car of the type wherein the current supplied from a pair of batteries to the motor is controlled by a thyristor chopper, the series and parallel connections of the batteries is switched by switching means including a first thyristor connected between the batteries, a second thyristor for interconnecting the positive terminals of the batteries, and a third thyristor for interconnecting the negative terminals of the batteries. The current flowing through a powering thyristor is commutated by a commutation circuit connected across the powering thyristor and including a capacitor, a reactor and a braking thyristor.

REFERENCES:
patent: 3387194 (1968-06-01), Banks
patent: 3560818 (1971-02-01), Amato
patent: 3594629 (1971-07-01), Kawakami et al.
patent: 3619753 (1971-11-01), Thompson
patent: 3784890 (1974-01-01), Geiersbach
patent: 3893016 (1975-07-01), Rohsler

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