Self-starting synchronous motor

Details Self-starting synchronous motor Self-starting synchronous motor

1975-06-16

1976-12-21

Duggan, Donovan F.

Electricity: motive power systems

Linear-movement motors

310 12, 310181, 310162, 310154, 310 41, 340378MW, H02K 4102

Patent

active

039991075

ABSTRACT:
An electro-magnetic synchronous motor has an E-shaped stator linear or partially wrapped around an axis, the legs being the pole shoes. The middle leg includes a permanent magnet and one or both outer legs have coils. A movable displacement element has poles spaced further apart than the stator poles. The movable element has a stable position for zero energization in which one of its poles aligns with the stator pole having the permanent magnet. Coil energization disturbs magnetic field symmetry to move the element always in the right direction.

REFERENCES:
patent: 2040763 (1936-05-01), Summers
patent: 2568757 (1951-09-01), Mesh
patent: 3204136 (1965-08-01), Kaiwa et al.
patent: 3453510 (1969-07-01), Kreuter et al.
patent: 3482126 (1969-12-01), Bradley
patent: 3859547 (1975-01-01), Massie

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