Variable flux permanent magnets electromagnetic machine

Details Variable flux permanent magnets electromagnetic machine Variable flux permanent magnets electromagnetic machine

1983-06-02

1984-11-06

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310154, 310209, H02K 112

Patent

active

044814372

ABSTRACT:
The rotor or stator of an electro-magnetic machine, such as an electric motor, having permanent magnets is provided with auxiliary permanent magnets which are relatively positionable to provide an external magnetic flux path during normal operation of the machine and an internal magnetic flux path to enable the rotor to be readily separated from the stator for the purpose of maintenance or repair work. The invention also contemplates, for example, fine speed calibration, through variation of the intensity of a magnetic field during running of electro-magnetic machines such as DC motors.

REFERENCES:
patent: 2741714 (1956-04-01), Regelman
patent: 3360667 (1967-12-01), Gordon, Jr.
patent: 3713015 (1973-01-01), Frister
patent: 3822390 (1974-07-01), Janson
patent: 4110549 (1978-08-01), Mas

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