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ROTOR GEOMETRY FOR INTERIOR PERMANENT MAGNET MACHINE HAVING RARE EARTH MAGNETS WITH NO HEAVY RARE EARTH ELEMENTS
ROTOR GEOMETRY FOR INTERIOR PERMANENT MAGNET MACHINE HAVING RARE EARTH MAGNETS WITH NO HEAVY RARE EARTH ELEMENTS
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机译:没有稀土元素的稀土永磁内部永磁电机的转子几何
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摘要
An interior permanent magnet machine includes a wound stator, and a rotor core defining a plurality of pole cavities. Each of the pole cavities includes a cross section, perpendicular to a central axis of rotation, that defines a cross sectional shape having a centerline. The cross sectional shape of each of the pole cavities includes a radially inner barrier portion, a radially outer barrier portion, and a central portion. The centerline of the cross sectional shape of each of the radially outer barrier portion and the radially inner barrier portion, of each pole cavity, is defined by a generally arcuate segment. The centerline of the cross sectional shape of the central portion, of each pole cavity, is defined by a linear segment. One of a plurality of rare earth magnets, having no heavy rare earth elements, is disposed within the central portion of one of the plurality of pole cavities.
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