Permanent magnet compound motor

Abstract

The invention discloses a permanent magnet compound motor including a stator assembly, a flux adjusting ring assembly, a rotor assembly and a housing assembly, A uniform air gap layer exists between the stator assembly and the flux adjusting ring assembly. A uniform air gap layer also exists between the flux adjusting ring assembly and the rotor assembly. The permanent magnet compound motor has only one layer of permanent magnets, so that the permanent magnet amount can be saved. The permanent magnet compound motor has only two air gap layers, so that product formation, processing and assembly are all easier and more practical than those in the prior art. The permanent magnet compound motor has only one motion component, so that the permanent magnet compound motor is not easy to get damaged. The permanent magnet compound motor is simple in mechanical structure, low in manufacture cost and high in operation reliability. The permanent magnet is fixed with a built-in mold hole in a rotor core, so that the magnet may not be thrown out due to centrifugal force generated in high speed rotation of the rotor core. Therefore, the permanent magnet compound motor is safe and reliable. The rotor core is equipped with a damping bar made of conductor material, so that rapid convergence of rotation speed and torque can be realized and stable operation can be achieved after the rotor is started. The permanent magnet compound motor is low in heat generation and high in efficiency.

Description

technical field [0001] The invention relates to a permanent magnet composite motor, in particular to a permanent magnet composite motor integrating a permanent magnet gear and a permanent magnet motor. Background technique [0002] Modern drive systems have always tended to direct drive with variable speed, which can save the mechanical gear transmission system, eliminate the vibration and noise caused by mechanical gears, reduce mechanical losses, obtain higher system efficiency, and save energy. [0003] Existing composite motors integrate concentric magnetic gears and permanent magnet synchronous motors so that they can be both speed-adjustable and variable-speed. [0004] Existing composite motors have many forms, but no matter what form, its mechanical structure is three layers of permanent magnets and thus forms three layers of air gap; its common disadvantages are: (1) the amount of permanent magnets is large; (2) The magnetic fields between the three air gaps are co...

AI Technical Summary

Problems solved by technology

[0004] Existing composite motors have many forms, but no matter what form, its mechanical structure is three layers of permanent magnets and thus forms three layers of air gap; its common disadvantages are: (1) the amount of permanent magnets is large; (2) The magnetic fields between the three air gaps are coupled with each other, the magnetic field distribution is complex, and the design and manufacture are difficult

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