AUXILIARY MAGNETIZING WINDING FOR INTERIOR PERMANENT MAGNET ROTOR MAGNETIZATION
First Claim
Patent Images
1. An electric traction motor for a vehicle comprising:
- a housing;
a wound stator field located in said housing;
a rotor magnetically interacting with said wound stator field, said rotor including a permanent magnet;
air spaces configured in said rotor; and
windings located in said air spaces.
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Accused Products
Abstract
A method and apparatus for fabricating a rotor for an electric traction motor including forming cavities in the rotor, injecting magnetic material in a portion of the cavities, configuring an electrical winding in a portion of the cavities, and post-magnetizing the magnetic material.
29 Citations
16 Claims
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1. An electric traction motor for a vehicle comprising:
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a housing;
a wound stator field located in said housing;
a rotor magnetically interacting with said wound stator field, said rotor including a permanent magnet;
air spaces configured in said rotor; and
windings located in said air spaces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electric traction motor comprising:
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a housing;
a wound stator field located in said housing;
a rotor magnetically interacting with said wound stator field, said rotor including an array of cavities; and
an electrical winding configured in said array of cavities. - View Dependent Claims (11, 12, 13)
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14. A method of fabricating a rotor for an electric traction motor comprising the steps of:
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forming cavities in the rotor;
injecting magnetic material in a portion of the cavities;
configuring an electrical winding in a portion of the cavities; and
post-magnetizing the magnetic material. - View Dependent Claims (15, 16)
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Specification