Power failure stop circuit for a converter

Details Power failure stop circuit for a converter Power failure stop circuit for a converter

1986-10-27

1987-07-07

Beha, Jr., William H.

Electricity: motive power systems

Induction motor systems

Braking

318762, 318803, 318811, H02P 318

Patent

active

046789804

ABSTRACT:
The voltage in a converter 20 is compared with a reference voltage to detect an input power failure, in response to which a motor driven by the converter is automatically decelerated in accordance with a stored signal pattern/speed reduction curve such that the energy regenerated by the motor is equal to its power consumption. The DC bus voltage of the converter is thus maintained substantially constant during the regenerative braking of the motor, and it is promptly halted without resort to any mechanical braking unit.

REFERENCES:
patent: 4445167 (1984-04-01), Okado
patent: 4506766 (1985-03-01), Watanabe
patent: 4620296 (1986-10-01), Siemon

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