SYSTEM AND METHOD FOR REDUCING TORQUE RIPPLE IN AN INTERIOR PERMANENT MAGNET MOTOR
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United States of America Patent
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Jul 22, 2013
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Jul 22, 2013
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Abstract
An interior permanent magnet motor comprises a rotor assembly disposed within a stator assembly. The rotor assembly is configured for rotating about a central axis relatively to the stator assembly. The rotor assembly defines a plurality of magnet pockets within the rotor assembly along a radially outboard surface of the rotor assembly. Each magnet pocket is substantially rectangular in cross-sectional shape, and each magnet pocket is configured to facilitate insertion of a plurality of permanent magnets into and retention of the plurality of permanent magnets within, the magnet pocket. The rotor assembly further comprises a plurality of permanent magnet segments disposed in each magnet pocket.
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