Permanent magnetism motor with asymmetric rotor

Abstract

The invention discloses a permanent magnetism motor with an asymmetric rotor. The motor comprises a stator and the rotor which includes permanent magnets arranged in an asymmetric way, the stator is arranged outside the rotor, an air gap is arranged between the stator and the rotor, and the rotor is fixed to a rotating shaft; the stator comprises a stator core and a three-phase armature winding, the stator core comprise a stator yoke and stator teeth which extend from the stator yoke to the rotor, and stator grooves are formed between the adjacent stator teeth; the rotor is provided with multiple permanent magnetism unit structures, and each permanent magnetism unit structure comprises an air magnetic barrier, a first permanent magnet built in a rotor yoke and a second permanent magnet arranged in the air magnetic barrier; and the central axis of the permanent magnetism unit structures is a rotor radial axis R1 crossing the center of the rotating shaft, and the permanent magnetism unitstructures are divided into left and right permanent magnetism unit structures of different structures by the central axis. The second permanent magnets of the rotor are arranged in the asymmetric way to overcome the disadvantage that the utilization rate of permanent magnetic and magnetic resistance torques of a built-in motor is not high, and thus, the torque output capability of the motor is improved.

Description

technical field [0001] The invention relates to motor equipment, in particular to an asymmetrical rotor type permanent magnet motor. Background technique [0002] With the deterioration of the ecological environment and the exhaustion of global energy sources, vigorously developing the new energy automobile industry has become a key measure related to the development of the national economy. As users' demand for electric vehicles continues to increase, built-in permanent magnet synchronous motors (Permanent Magnet Synchronous Machine, PMSM) are widely used in the field of electric vehicles because of their high power density, high efficiency and better control accuracy, including Toyota Prius , Honda Insight and other models. [0003] However, the traditional built-in permanent magnet motor has a lot of permanent magnet flux leakage, and the utilization rate is not high. At the same time, due to the high price of rare earth permanent magnet materials, this is not conducive ...

AI Technical Summary

Problems solved by technology

However, the reluctance offset permanent magnet synchronous motor is not yet mature in terms of operating mechanism or engineering application level, so it is worth further research

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