Brushless motor with skewed rotor segments

Details Brushless motor with skewed rotor segments Brushless motor with skewed rotor segments

2011-04-19

2011-04-19

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156250

Reexamination Certificate

active

07928622

ABSTRACT:
In a brushless motor including a rotor having 2n magnetic poles and a stator having 3n slots, the magnetic poles of the rotor are composed of segment magnets arranged in three columns extending in an axial direction. The magnets of each column are displaced from the magnet of either adjacent column in a circumferential direction, forming a 3-stage step-skew structure. The segment magnets have a skew angle θskew ranging from 36° to 57° in terms of electrical angle.

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