ROTOR STRUCTURE, PERMANENT MAGNET AUXILIARY SYNCHRONOUS RELUCTANCE MOTOR AND ELECTRIC VEHICLE

DRIVE July 2, 2025
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A rotor structure, a permanent magnet auxiliary synchronous reluctance motor and an electric vehicle, the rotor structure includes a rotor body and an outer layer permanent magnet. The rotor body is provided with a magnetic steel slot group. The magnetic steel slot group includes an outer layer magnetic steel slot. The outer layer magnetic steel slot includes a plurality of magnetic steel slot segments. At least two of the plurality of magnetic steel slot segments are arranged in a radial direction of the rotor body and are disposed oppositely at both sides of a direct axis of the rotor body. The outer layer permanent magnet is arranged in the magnetic steel slot segment, a length of the outer layer permanent magnet disposed in the two oppositely arranged magnetic steel slot segments is L, and a maximum distance between the two oppositely arranged magnetic steel slot segments is C, where 0.8×C≤L. By means of arranging the outer layer magnetic steel slot of the magnetic steel slot group on the rotor body, more permanent magnets are placed in a unit volume of the rotor, thereby generating a larger permanent magnet torque, improving a q-axis inductance of the motor, increasing efficiency of the motor, reducing torque ripples of the motor, reducing vibrations and noises of the motor, and improving demagnetization ability of the motor.

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