Commutatorless d.c. electric motor

Details Commutatorless d.c. electric motor Commutatorless d.c. electric motor

1984-12-17

1986-08-26

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310208, 310261, H02K 126

Patent

active

046085050

ABSTRACT:
An electromotive device which is a d.c. motor or a.c. motor, including a substantially cylindrical armature having a plurality of windings, a magnetic field of electromagnets or permanent magnets, and a casing constructed to support and maintain small air gap clearances between the armature and magnetic field. This device can be configured to provide either a stationary field commutatorless motor or a rotating magnetic field commutatorless motor. The armature is constructed to produce very small winding current magnetic flux at wide armature slot walls in comparison to winding current magnetic flux at adjacent narrow armature slot walls. The interaction of the winding current magnetic flux and the magnetic field flux induced electron motion in slot wall surfaces results in larger and oppositely directed forces at the walls of the narrow slots than at the walls of the wide slots. The net force produces a relative torque between the armature and magnetic field to drive a load attached to the motor. An advantage of a commutatorless motor constructed according to the invention is the lack of a counter-emf to limit motor speed.

REFERENCES:
patent: 456925 (1891-07-01), Bassett
patent: 483708 (1892-10-01), Bassett

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