Stator-rotor double-permanent-magnet double-armature-winding magnetic field modulation permanent magnet motor structure

Abstract

The invention discloses a stator and rotor double-permanent magnet double-armature winding magnetic field modulation permanent magnet motor, which comprises a stator and a rotor which are both of a salient pole structure, wherein the rotor and the stator rotate relatively, an annular air gap is formed between the stator and the rotor, the rotor comprises a rotor iron core, a rotor armature windingand a rotor permanent magnet, the rotor iron core comprises rotor teeth and a rotor yoke part, the rotor armature winding is wound on the rotor teeth by adopting a two-phase armature winding, the rotor permanent magnet is arranged in a groove between the two rotor teeth, the stator comprises a stator iron core, a stator armature winding and a stator permanent magnet, the stator iron core comprises stator teeth and a stator yoke part, the stator armature winding is wound on the stator teeth by adopting a three-phase armature winding, and the stator permanent magnet is arranged in a groove between the two stator teeth. The stator and rotor double-permanent magnet double-armature winding magnetic field modulation permanent magnet motor is of a double-salient-pole structure, adopts a magneticfield modulation principle, and is high in robustness, high in torque density and high in fault tolerance.

Description

Technical field [0001] The invention belongs to the field of motors, and particularly relates to a permanent magnet motor structure with stator and rotor double permanent magnets and double armature winding magnetic field modulation. Background technique [0002] In recent years, energy conservation and emission reduction have become the trend of the times, and new energy vehicles have become an important development direction for electric vehicles in the future. As the core power component of new energy vehicles, electric motors must have high torque density (power density), high efficiency and high fault tolerance. In addition, in the aerospace field, in order to reduce the weight of the motor, there are extremely high requirements for the power density of the motor. Due to the principle of magnetic field modulation, the magnetic field modulation motor has the characteristics of high torque density and has received more and more research and attention in the academic and indus...

AI Technical Summary

Problems solved by technology

However, the existing field-modulated motors usually only include one set of armature windings (usually located on the stator), once the armature windings fail, they cannot generate torque, so the reliability of torque output is poor

On the other hand, in the existing topological structure of the field modulation motor, most of the rotor parts only contain permanent magnets or only use salient pole structure, resulting in waste of space on the rotor side

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