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MOTOR ROTOR STRUCTURE AND PERMANENT MAGNET MOTOR
MOTOR ROTOR STRUCTURE AND PERMANENT MAGNET MOTOR
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机译：电机转子结构和永磁电机
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摘要
A motor rotor structure including a rotor core (100). At least two first permanent magnet slots (110) are disposed in the rotor core (100) in a circumferential direction. At least one second permanent magnet slot (120) is disposed between every two adjacent first permanent magnet slots (110); each of the first permanent magnet slots (110) and second permanent magnet slot (120) are spaced a preset distance apart. Between two kinds of permanent magnets having different coercivities, one kind of permanent magnet is mounted in each of the first permanent magnet slots (110), and another kind of permanent magnet is mounted in the second permanent magnet slot (120). When identical polarities of adjacent two kinds of permanent magnets having different coercivities face each other, the rotor core (100) is in a more-magnetic-pole state. When contrary polarities of adjacent two kinds of permanent magnets having different coercivities face each other, the rotor core (100) is in a fewer-magnetic-pole state. The motor rotor structure is able to adjust an internal magnetic field according to an operation condition of the motor, so that the rotor core has a more-magnetic-pole state and a fewer-magnetic-pole state, thereby increasing a high-efficiency region of the motor and expanding an operation range of the motor.
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