Disc type double-stator hybrid excitation motor

Abstract

The invention discloses a disc type double-stator hybrid excitation motor. According to the hybrid excitation motor designed in the invention, based on the principle of magnetic field modulation, the combination of a disc type permanent magnet motor and an electric excitation system is realized. The hybrid excitation motor has the characteristics of high power density, high moment density, a short axial size and a compact structure and also has the advantages of flexible adjustment of an excitation magnetic field and a wide speed regulation range, and thus the hybrid excitation motor can be applied to the field of electric vehicle hubs. The motor comprises two stators and one disc type rotor. An excitation winding and an armature winding are respectively arranged at the stators at two sides, and a permanent magnet pole and a core pole are distributed on the rotor. By using the magnetic field modulation technology, the permanent magnet on the rotor and the excitation winding on an inner stator generate a magnetic field same with an armature winding pole pair number at an external air gap, and a permanent magnet pole and an iron pole are uniformly distributed on the rotor. By using the magnetic field modulation technology, the permanent magnet on the rotor and the excitation winding on the inner stator generates a magnetic field same with the armature winding pole pair number at the external air gap, and thus the electromechanical energy conversion is realized. The back EMF waveform is improved through the design of a multi-phase structure and a three-layer fractional-slot integrated winding, and the reliability and fault tolerance of the motor are improved at the same time.

Description

technical field

[0001] The invention belongs to the design field of permanent magnet motors, in particular to a disc-type dual-stator hybrid excitation motor. Background technique

[0002] At present, the disk permanent magnet motor has been widely concerned in the field of drive and industrial application due to its unique advantages. It not only has the advantages of high power density and high torque density of the permanent magnet motor, but also has the short axial dimension of the disk motor. The advantages of compact structure and high utilization rate of silicon steel sheet make it have incomparable performance of radial magnetic field motor under the special installation space conditions. In addition, due to its structural characteristics, the disc permanent magnet motor has a small moment of inertia, easy off-line, and good heat dissipation conditions for the stator winding. At the same time, it can be made into a multi-air gap structure to further improve the outp...

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