H-Switch start-up control for AC motor

Details H-Switch start-up control for AC motor H-Switch start-up control for AC motor

1982-07-29

1984-07-10

Rubinson, G. Z.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318808, 363149, H02P 126, H02M 502

Patent

active

044595328

ABSTRACT:
A start-up control technique is disclosed for an AC motor. At least one H-switch connects a motor winding to a pair of AC-supplied power lines and is switched between designated states to yield a fundamental frequency component voltage waveform in the winding phase shifted from the voltage waveform in another winding. A rotating field is provided for start-up, without energy-storage phasing capacitors or inductors.

REFERENCES:
patent: 4117364 (1978-09-01), Baker
patent: 4330741 (1982-05-01), Nagase

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