Permanent magnet machines with stator pole sections having...

Details Permanent magnet machines with stator pole sections having... Permanent magnet machines with stator pole sections having...

2011-05-03

2011-05-03

Nguyen, Tran N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S216008, C310S216074

Reexamination Certificate

active

07936104

ABSTRACT:
A permanent magnet machine includes a rotor and a stator including plurality of stator pole sections. Each stator pole section comprises a core section having an inner end piece disposed adjacent to the core section, the inner end piece comprising a first magnetic material that is adapted to saturate during exposure to a first magnetic field strength, and an outer end piece disposed adjacent to the core section radially outwardly relative to the inner end piece, the outer end piece comprising a second magnetic material that is adapted to be unsaturated during exposure to the first magnetic field strength and to saturate during exposure to a second magnetic field strength, wherein the second magnetic field strength is greater than the first magnetic field strength.

REFERENCES:
patent: 4255684 (1981-03-01), Mischler et al.
patent: 5051637 (1991-09-01), Harris et al.
patent: 6472792 (2002-10-01), Jack et al.
patent: 7567010 (2009-07-01), Farnia
patent: 7646130 (2010-01-01), Holmes et al.
patent: 2009/0256430 (2009-10-01), Farnia

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