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US07936104B2 Permanent magnet machines with stator pole sections having different magnetic materials 有权
具有不同磁性材料的定子极部分的永磁体机器

Permanent magnet machines with stator pole sections having different magnetic materials
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.
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