Digital pulse width modulation motor control system

Details Digital pulse width modulation motor control system Digital pulse width modulation motor control system

1984-11-09

1986-10-28

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

363 41, H02P 540, H02M 5458

Patent

active

046201432

ABSTRACT:
An adjustable frequency AC motor drive control system includes pulse width modulation control of an inverter coupled with the motor and a programmed microprocessor which generates a cosine wave in cooperation with a sine wave and a carrier wave to provide a synthesized sine wave voltage to the motor by controlling the conduction of power switches at a rate higher than the fundamental frequency of the sine wave voltage output.

REFERENCES:
patent: 3346794 (1967-10-01), Stemmler
patent: 4328525 (1982-05-01), Allen et al.
patent: 4333042 (1982-06-01), Kawada et al.
patent: 4485355 (1984-11-01), Scott

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