Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1974-12-04
1976-05-18
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310154, 310181, H02K 3700
Patent
active
039581390
ABSTRACT:
An improved electric motor having bridge-type magnetic circuits and including a magnetically permeable armature having first and second sets of salient rotor poles that are axially spaced apart and a permanent magnet stator structure. The stator structure includes a first pair of parallel magnetically permeable plates that are symmetrically disposed with respect to a first plane of symmetry and between which is interposed a first permanent magnet, the first plane of symmetry including the rotor axis. A second pair of parallel magnetically permeable plates is provided in symmetrical relation with respect to the first pair of plates and a second permanent magnet is interposed between the second pair of plates. The symmetry exhibited by the first and second pairs of plates is referenced to a second plane of symmetry that includes the rotor axis. The first and second pairs of plates define first and second sets of stator poles that are magnetically coupled with the first and second sets of salient rotor poles, respectively. The stator poles define surfaces that are symmetrically disposed with respect to and angularly displaced by 45.degree. from the first and second planes of symmetry. An energizing coil is provided for generating a flux in response to the energization of the coil, such coil being disposed about and coaxial with the armature, intermediate the first and second sets of stator poles.
REFERENCES:
patent: 3456138 (1969-07-01), Huber
patent: 3539848 (1970-11-01), Stcherbatcheff
patent: 3553508 (1971-01-01), Stcherbatcheff
Duggan Donovan F.
Smith Arthur V.
Societe de Recherches en Matiere de Micromoteurs Electriques
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