Two speed single phase induction motor

Details Two speed single phase induction motor Two speed single phase induction motor

1976-09-16

1978-07-25

Hohauser, Herman J.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

310184, H02K 1708

Patent

active

041032128

ABSTRACT:
A dynamoelectric machine in the form of an induction motor provides two speed operation with a minimum number of motor leads and a minimum number of motor windings. The motor includes a stator assembly having a core of magnetic material. The core has a plurality of slots formed in it. The motor windings are carried in the slots. The motor windings include a main winding, a first auxiliary winding and a second auxiliary winding. The main inding and one of the auxiliary windings have an equal number of electrical and physical poles. The second auxiliary winding has twice the number of physical poles as the main winding. First speed operation is attained by electrically energizing the main winding with the first auxiliary winding. Second speed operation is attained by interconnecting the main winding so that it produces two consequent physical poles resulting in four electrical poles and energizing the second auxiliary winding for operation with the reconnected main winding.

REFERENCES:
patent: 3153184 (1964-10-01), Stout
patent: 3359476 (1967-12-01), Charlton
patent: 3887854 (1975-06-01), Parks

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