Method and device for braking a squirrel-cage motor

Details Method and device for braking a squirrel-cage motor Method and device for braking a squirrel-cage motor

1988-05-10

1990-03-13

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Braking

H02P 324

Patent

active

049085638

ABSTRACT:
A method and device are disclosed for braking a squirrel-cage motor in which the motor is controlled in a manner known per se by means of a voltage converter and a control circuit which switches off the main current to the motor in a braking situation, whereupon a direct current is supplied to the motor windings. To achieve a simple and inexpensive braking control system, the direct current fed into the motor windings is obtained from a rectifier bridge formed in the braking situation via electrical control from certain semiconductor components of the voltage converter.

REFERENCES:
patent: 3866097 (1975-02-01), Anzai et al.
patent: 4083431 (1978-04-01), Oohira et al.
patent: 4491197 (1985-01-01), Nisaiwaki
patent: 4741415 (1988-05-01), Nomura

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