Electric motors

Details Electric motors Electric motors

1974-12-30

1976-08-03

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

318224A, H02K 300

Patent

active

039731545

ABSTRACT:
A two-speed, single-phase a.c., shaded-pole, induction motor with pole-changing, in ratio other than 2:1, by pole-amplitude modulation. The motor has stator and squirrel-cage rotor elements. The stator is made with an even number of salient poles, arranged as an even number of pole-groups, wound with at least one less number of coils than poles. Pole-changing is by reversal of the coils of consecutive pole-groups.

REFERENCES:
patent: 3233160 (1966-02-01), Rawcliffe
patent: 3270264 (1966-08-01), Miner
patent: 3295034 (1966-12-01), Herzog
patent: 3588649 (1971-06-01), Heine
patent: 3619748 (1969-09-01), Eastham
patent: 3697842 (1972-10-01), Morrill
patent: 3826960 (1974-07-01), Broadway

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