Permanent magnet field type starting motor provided with an auxi

Details Permanent magnet field type starting motor provided with an auxi Permanent magnet field type starting motor provided with an auxi

1982-03-15

1984-09-04

Miller, J. D.

Electrical generator or motor structure

Dynamoelectric

Rotary

335302, H02K 2128

Patent

active

044699697

ABSTRACT:
A permanent field type starting motor is provided with a permanent magnet, and a non-permanent magnet auxiliary pole which has higher reversible permeability than that of the permanent magnet. The auxiliary pole is disposed in the circumferential direction of the inner circumference of a yoke and on the magnetizing side of armature reaction relative to the center of the pole. The pole arc ratio of the auxiliary pole with respect to the center angle of the field is selected in a range from 0.07 to 0.4.

REFERENCES:
patent: 3567979 (1971-03-01), Jaffe
patent: 3594599 (1971-07-01), West
patent: 4110718 (1978-08-01), Odor et al.
patent: 4237397 (1980-12-01), Mohr et al.
patent: 4383193 (1983-05-01), Tomite et al.

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