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US 2003/0164655 A1Published application
Interior permanent magnet rotor
AssigneeGeneral Motors Corporation
InventorsFrancois J. Biais, Khwaja M. Rahman
Life of this patent
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Abstract
An electric traction motor for a vehicle including a housing, a wound stator field located in the housing, a rotor magnetically interacting with the wound stator field, high energy magnets configured in the rotor, and low energy magnets configured in the rotor.
Claims16
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;
- high energy magnets configured in said rotor;
- and
- low energy magnets configured in said rotor.
3 more elements
The electric traction motor of claim 9 wherein said high energy and low energy magnets include a polymer.
An electric traction motor comprising:
- 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;
- a first magnetic material configured in a portion of said array of cavities;
- and
- a second magnetic material configured in a portion of said array of cavities.
3 more elements
A method of fabricating a rotor for an electric traction motor comprising the steps of:
- forming cavities in the rotor;
- injecting high energy magnetic material in a portion of the cavities;
- injecting low energy magnetic material in a portion of the cavities;
- and
- post-magnetizing the magnetic material.
2 more elements
Dependencies are inferred from the claim text.