Induction motor control apparatus and method

Electricity: motive power systems – Induction motor systems – Braking

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318759, 318762, H02P 318

Patent

active

047774207

ABSTRACT:
An AC induction motor is energized by a voltage fed inverter coupled with a DC power source and is controlled in response to a torque request signal that is provided to accelerate or decelerate the motor as desired to maintain a desired torque output. The motor is operated to have each of a power and brake operation below the base speed of the motor and to have each of a power and brake operation above the base speed of the motor.

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patent: 4023083 (1977-05-01), Plunkett
patent: 4263541 (1981-04-01), Okado
patent: 4281276 (1981-07-01), Cutler et al.
patent: 4483419 (1984-11-01), Salihi et al.
patent: 4543520 (1985-09-01), Danz et al.

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