Permanent magnet d.c. motor having a radially-disposed working f

Details Permanent magnet d.c. motor having a radially-disposed working f Permanent magnet d.c. motor having a radially-disposed working f

1995-02-10

1997-08-19

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310259, H02K 2124

Patent

active

056592175

ABSTRACT:
A P.M. d.c. motor which may utilize "brushless" commutation. The motor includes a stator assembly with a plurality of upstanding discrete spaced-apart core components formed in a circular locus generally parallel with the motor axis. Each core component includes a relatively lengthy winding association region and extending therefrom a pole piece region providing a flux interaction surface. A field winding mounted upon a bobbin is positioned over the core component at the winding association region and when excited, generates electromagnetic flux at the flux interaction surface. A permanent magnet component is carried by a rotor such that its interaction surface is adjacent to that at the pole piece region, and is spaced therefrom to define a flux working gap at a desirably lengthy working gap radius from the motor axis.

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