Two-phase AC electric motor control circuit

Details Two-phase AC electric motor control circuit Two-phase AC electric motor control circuit

1977-06-22

1979-07-03

Hohauser, Herman

Electricity: motive power systems

Induction motor systems

Reversing

H02P 140

Patent

active

041601963

ABSTRACT:
A control circuit of a two-phase AC electric motor wherein the windings and two series capacitors are delta-connected, the winding mid point is brought to one terminal of the power source, and the winding leads connected to the capacitors are brought to the other terminal of the power source through switchgear components.
The control circuit is distinguished from the prior-art control circuits in that the mid point of the capacitors is connected to the mid point of the switchgear elements, with the capacitance of each capacitor being equal to the rated phase-shifting capacitance of the electric motor.

REFERENCES:
patent: 2407994 (1946-09-01), Menzies
patent: 2509898 (1950-05-01), Wiseman
patent: 2707259 (1955-04-01), Rech
patent: 3087102 (1963-04-01), Brown
patent: 3593080 (1971-07-01), Reynolds

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