Optimum groove/pole ratio for brushless motor stator profile

Details Optimum groove/pole ratio for brushless motor stator profile Optimum groove/pole ratio for brushless motor stator profile

1997-01-03

1998-04-14

LaBalle, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310162, 310164, H02K 112, H02K 1904, H02K 2122

Patent

active

057396205

ABSTRACT:
A stator for a single-phase axially wound brushless motor with a diametrical air-gap has a plate structure with at least one plate whose profile comprises: a central circular hole; a plurality of salient poles surrounding the central hole with each salient pole having a symmetrical profile; and a groove opening for every two adjacent salient poles. The ratio of the included angle of the two sides of a groove opening divided by the pitch angle of salient poles is between 0.55 to 0.68.

REFERENCES:
patent: 4647802 (1987-03-01), Konecny
patent: 5093599 (1992-03-01), Horng
patent: 5146127 (1992-09-01), Smith
patent: 5148090 (1992-09-01), Oku et al.
patent: 5506458 (1996-04-01), Pace et al.
patent: 5539263 (1996-07-01), Lee

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