System for driving a motor by a pulse width modulation inverter

Details System for driving a motor by a pulse width modulation inverter System for driving a motor by a pulse width modulation inverter

1979-09-27

1982-06-01

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318801, H02P 540

Patent

active

043330428

ABSTRACT:
A system for driving an alternate current motor including a pulse width modulation inverter having the two-range driving characteristics, wherein the motor is driven by the pulse width modulation output having a simulated sine wave form at the speed lower than the base speed of the motor and by the pulse width modulation output having a rectangular wave form at the speed higher than the base speed of the motor.

REFERENCES:
patent: 3346794 (1967-10-01), Stemmler
patent: 3353081 (1967-11-01), Stemmler
patent: 3967173 (1976-06-01), Stich
patent: 4227138 (1980-10-01), Espelage et al.
patent: 4247890 (1981-01-01), Cutler et al.

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