Double-rotor motor with permanent magnet-magnetic resistance axial magnetic flux composite structure

Abstract

The invention discloses a double-rotor motor with a permanent magnet-magnetic resistance axial magnetic flux composite structure. The double-rotor motor comprises stators (1), a first rotor (8) and a second rotor (6), wherein the stators (1) are arranged in an axial direction; the inner end surface of each stator (1) is a circular surface, grooves are distributed at the inner end surface of each stator in the radial direction, and three-phase distributed type armature windings (2) are arranged in the grooves; permanent magnets (3) are arranged at the end surface, facing the stators, of the first rotor (8), and are uniformly distributed at the circular surface; the end surface, facing the second rotor (6), of the first rotor (8) is provided with convex poles (4) which are distributed along the circumference; grooves are distributed at the inner end surface of the second rotor (6) in the radial direction, and three-phase centralized type windings (5) are arranged in the grooves. The double-rotor motor has the beneficial effects that the toothed groove torque of the system is weakened, and the vibration and electromagnetic noise are decreased; the power density and power factor of the system are improved, and the transfer efficiency is improved; the electromagnetic torque of the system is improved, and the driving force of a hybrid automobile is improved.

Description

technical field [0001] The invention belongs to the field of hybrid electric vehicles, and in particular relates to a permanent magnet-reluctance axial flux composite structure double-rotor motor used for a hybrid electric vehicle. Background technique [0002] The hybrid electric vehicle drive system uses an axial field flux-switching permanent magnet motor. "Analysis of Cogging Torque of Axial Magnetic Flux Switching Permanent Magnet Motor", Lin Mingyao et al., Journal of Electrical Machinery and Control, Vol. 13, No. 6, pp. 787-791, November 2009 recorded an axial magnetic field Flux switching permanent magnet motor, the motor is the first stator, intermediate rotor and second stator from left to right, each stator is composed of 12 "U"-shaped magnetic cores, 12 coils and 12 permanent magnets , each coil is wound on the teeth of two adjacent U”-shaped magnetic permeable cores, with permanent magnets embedded in the middle, the permanent magnets are alternately magnetized...

AI Technical Summary

Problems solved by technology

[0004] The tendency that the facing area of ​​the intermediate rotor teeth and the stator teeth is constant leads to the cogging torque of the axial magnetic flux switching permanent magnet motor is larger than that of the traditional permanent magnet motor, and the cogging torque tries to make the intermediate rotor of the motor return to its original position. Therefore, the axial magnetic flux switching permanent magnet motor has problems such as large vibration, large electromagnetic noise, and difficulty in starting during operation, which affect the control accuracy of the system and the performance of the motor.

Images