Electric motor having controlled magnetic flux density

Details Electric motor having controlled magnetic flux density Electric motor having controlled magnetic flux density

1975-07-21

1977-12-13

Rubinson, Gene Z.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318200, 318227, 318228, H02P 144

Patent

active

040631354

ABSTRACT:
A motor is disclosed in which the stator winding of, for example, a squirrel cage induction motor, is connected in series with a capacitor so that the capacitor, together with the input voltage, causes the stator core to periodically switch from a nonsaturated to a saturated condition and vice-versa so that the flux density is maintained at a uniform high level. A second stator winding may be provided in parallel with the first stator winding and capacitor which second winding serves to provide increased starting torque and improve the overall operating characteristics of the motor. Also disclosed is an embodiment in which an inverter is employed to permit the motor to be operated from a DC source.

REFERENCES:
patent: 1978581 (1934-10-30), Johnson
patent: 2640956 (1953-06-01), Buchanan
patent: 2735056 (1956-02-14), Meijer
patent: 2807765 (1957-09-01), Suhr
patent: 2995690 (1961-08-01), Lemon
patent: 3675100 (1972-07-04), McNamara et al.

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