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

041032136

ABSTRACT:
A dynamoelectric machine in the form of an induction motor is provided which is capable of two speed operation with a minimum number of motor leads and a minimum number of motor windings. The motor includes a stator assembly and a rotor assembly, the stator assembly being adapted to receive the motor windings in a conventional manner. The motor windings are constructed from a plurality of coil sets, groups of which define physical poles for the motor. The windings include a first main winding, a second main winding and an auxiliary winding. The first main winding and the auxiliary winding have an equal number of physical motor poles. The second main winding has twice the number of physical motor poles as the first main winding. The first main winding and the auxiliary winding are energized to permit motor operation at a first speed. Second speed operation is obtained by energizing the second main winding, disconnecting the auxiliary winding, and reconnecting the first main winding so that it functions as an auxiliary winding for the second 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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