Magnetism-increasing decoupling axial-flux switching dual-rotor motor

Abstract

The invention discloses a magnetism-increasing decoupling axial-flux switching dual-rotor motor. A rotor of the motor adopts a disc-type salient pole structure, and a stator is embedded between a first rotor and a second rotor, is of a salient pole structure and comprises a stator core, a tangential permanent magnet, a magnetism-increasing permanent magnet, a radial permanent magnet and an armature winding. In the magnetism-increasing decoupling axial-flux switching dual-rotor motor, the magnetism-increasing permanent magnet is additionally arranged on the central surface of the stator core of the motor, the whole magnetic path of the motor is divided into a left part and a right part, the magnetism-increasing permanent magnet plays a role in suppressing coupling of the left rotor magnetic path and the right rotor magnetic path, the coupling of the left rotor magnetic path and the right rotor magnetic path can be reduced to a certain extent, and thus, the left rotor and the right rotor have abilities of independent running. Meanwhile, a magnetism gathering effect is generated among the magnetism-increasing permanent magnet, the tangential permanent magnet and the radial permanent magnet, the gap flux density of the motor is further increased, and the power density of the motor is improved. No winding and no permanent magnet are arranged on the rotors, the magnetism-increasing decoupling axial-flux switching dual-rotor motor has the characteristics of simplicity in structure, low cost and small rotational inertia, is applicable for running at a high speed, and can be rapidly started, and a few iron core materials are required for the disc-type structured rotor.

Description

technical field [0001] The invention relates to a magnetic flux switching motor, in particular to a magnetization decoupling type axial flux switching dual-rotor motor, which belongs to the technical field of permanent magnet motors. Background technique [0002] Axial field motors are also called disc motors. Compared with radial field motors, this type of motor has the characteristics of a flat air gap, radial placement of current-carrying conductors, and axial distribution of the air gap magnetic field. The rotor heat dissipation condition of the magnetic field motor is not good, and the utilization rate of the rotor core is not high. The world's first motor was an axial field motor, but due to the limitations of materials and manufacturing processes at that time, the disc motor could not be further developed. With the development of modern material science and the improvement of manufacturing technology, the problems that restricted the development of axial magnetic fie...

AI Technical Summary

Problems solved by technology

However, in the axial field flux switching motor proposed in this patent, the permanent magnet only exists in the middle of the stator unit, and the volume of the permanent magnet that can be accommodated is very limited.

In order to obtain a larger air gap flux density, the axial length of the motor stator can only be increased, which will lead to an increase in the axial length of the motor, an increase in the flux leakage of the permanent magnet, and it is difficult to increase the power density of the motor

Another patent (application number: 201310252069.9) proposes a dual-rotor motor that can solve the problem of permanent magnet flux leakage, but still does not provide a reasonable solution to the problem of increasing the axial length of the motor

Moreover, the magnetic circuits of the two rotors in this patent are severely coupled when the motor is running. The two rotors can only run at the same speed, and the independent operation of the rotors on both sides cannot be realized. In essence, it is still a single rotor, but the rotor is divided into two parts and distributed in the stator. both sides

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