Gated asynchronous carrier modulation

Details Gated asynchronous carrier modulation Gated asynchronous carrier modulation

1982-03-18

1983-10-11

Truhe, J. V.

Electricity: motive power systems

Induction motor systems

Primary circuit control

363 41, 307269, H02P 534

Patent

active

044095350

ABSTRACT:
A motor pulse width modulation control technique employing gated asynchronous carrier modulation including establishing a repetitive modulation signal along with the generation of a carrier frequency signal at a frequency greater than the frequency of the modulation signal. The carrier frequency signal is gated at a gating rate less than the frequency of the carrier frequency signal so as to provide the gated carrier frequency signal. Means are provided for modulating the gated carrier frequency signal by the aforementioned repetitive modulation signal so as to provide cyclic pulse width modulation drive signal for motor control.

REFERENCES:
patent: 3569805 (1971-03-01), Hammond
patent: 3624486 (1971-11-01), Oates
patent: 3886430 (1975-05-01), Meier
patent: 4179727 (1979-12-01), Muto et al.
patent: 4333042 (1982-01-01), Kawada et al.

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