Magnetism adjusting ring, magnetism adjusting ring assembly, magnetic gear and composite motor

Abstract

The invention provides a magnetism adjusting ring, a magnetism adjusting ring assembly, a magnetic gear and a composite motor. The magnetism adjusting ring comprises an annular yoke part and a plurality of magnetism adjusting protrusions located on the peripheral side wall of the annular yoke part, the multiple magnetism adjusting protrusions extend from inside to outside in the radial direction of the annular yoke part, the sides, facing an outer rotor, of the free ends of the magnetism adjusting protrusions are provided with a plurality of teeth, and the multiple teeth are arranged at intervals in the circumferential direction of the annular yoke part. According to the magnetism adjusting ring, the magnetism adjusting ring assembly, the magnetic gear and the composite motor, the multipleteeth are arranged at the free end of the magnetism adjusting protrusion, the higher harmonic content at the outer air gap in the operation process is effectively reduced, and therefore output torquefluctuation is reduced.

Description

technical field [0001] The invention belongs to the technical field of magnetic gears, and in particular relates to a magnetic adjusting ring, a magnetic adjusting ring assembly, a magnetic gear and a composite motor. Background technique [0002] Compared with the traditional magnetic gear, the magnetic field modulation magnetic gear can make all the permanent magnets play a role in torque transmission, has a relatively high torque density and high efficiency, and has a good application prospect. The magnetic field modulation type magnetic gear of the existing scheme is composed of inner rotor, inner rotor permanent magnet, magnetic adjustment ring, outer rotor, outer rotor permanent magnet and other structures. The size of the torque fluctuation directly affects the performance of the magnetic gear, and in the prior art, there is a lack of refinement of the structure of the magnetic ring facing the outer rotor. For example, in the prior art, the magnetic ring is more It i...

AI Technical Summary

Problems solved by technology

The size of the torque fluctuation directly affects the performance of the magnetic gear, and in the prior art, there is a lack of refinement of the structure of the magnetic ring facing the outer rotor. For example, in the prior art, the magnetic ring is more It is a smooth arc surface. This smooth arc surface structure makes the high-order harmonic content at the outer air gap during the operation of the magnetic ring ring larger, resulting in larger output torque fluctuations. In order to reduce torque fluctuations, the present invention is proposed

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