Invention Grant
- Patent Title: Permanent magnet machines with stator pole sections having different magnetic materials
- Patent Title (中): 具有不同磁性材料的定子极部分的永磁体机器
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Application No.: US12406637Application Date: 2009-03-18
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Publication No.: US07936104B2Publication Date: 2011-05-03
- Inventor: Timothy J. Alfermann , Arthur L. McGrew, Jr. , Ahmed M. El-Antably
- Applicant: Timothy J. Alfermann , Arthur L. McGrew, Jr. , Ahmed M. El-Antably
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Ingrassia Fisher & Lorenz, P.C.
- Main IPC: H02K1/00
- IPC: H02K1/00

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.
Public/Granted literature
- US20100237736A1 PERMANENT MAGNET MACHINES Public/Granted day:2010-09-23
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