Brushless permanent magnet machine with reduced cogging and...

Details Brushless permanent magnet machine with reduced cogging and... Brushless permanent magnet machine with reduced cogging and...

2005-09-06

2005-09-06

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S211000

Reexamination Certificate

active

06940198

ABSTRACT:
An electrical machine comprises a stator and a rotor. The rotor includes a plurality of stator teeth and a winding with compact coils disposed on the teeth. The winding has (m) phases and (p) poles; where (m) is an integer and is greater than or equal to two; where (p) is an integer, is greater than or equal to two, and is an even number. The rotor has a magnetization pattern including a magnetization skew. In some constructions, each stator includes one or more channels along a surface adjacent to the rotor. The channels can be of various shapes including a trapezoidal shape or a curvilinear shape.

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U.S. Patent Application entitled “Brushless Permanent Magnet Machine Axial Modules of Rotor Magnetization Skew and Method of Producing the Same”, U.S. Appl. No. 10/626,326, filed Jul. 24, 2003.

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