Control circuit for an A.C. motor

Details Control circuit for an A.C. motor Control circuit for an A.C. motor

1978-06-01

1980-11-11

Rubinson, Gene Z.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318812, H02P 528

Patent

active

042335515

ABSTRACT:
The present invention relates to a control circuit for an A.C. motor with two or several sets of windings. The switch-off phase of the first set of windings is symmetrical with the turn-on phase of the second set of windings, and it is illustrated how to modify the supplied current by simultaneous, symmetrical modification of said phases. As a result a symmetrical field distribution over each pole is obtained even if the turn-on and switch-off phases of the currents supplied to the windings are regulated.

REFERENCES:
patent: 3665273 (1972-05-01), Enslin
patent: 3703672 (1972-11-01), Bird et al.
patent: 4070605 (1978-01-01), Hoeppner

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