Modularized flux switching permanent magnet (FSPM) motor

Abstract

The invention discloses a modularized flux switching permanent magnet (FSPM) motor, which is used for solving the problem of such a motor in which a permanent magnet is placed in a rotor. The motor comprises a stator and a rotor and adopts an inner rotor mode or an external rotor mode. The stator and the rotor are respectively a convexo-convex pole and slot structure. A magnetic module and a centralized armature winding are arranged on the stator; the magnetic module comprises one male concentrating flux iron core and one female concentrating flux iron core of the stator as well as a permanent magnet embedded in the stator; and the rotor is not provided with a permanent magnet and a winding. The motor has the beneficial effects that the structure is simple, compact and stable, and the volume is small; the windings are high in slot fullness, the resistance and the copper consumption are decreased and the efficiency is higher; the linear charge density, the torque output capacity and the power density are improved; the magnetic flux gathering effect exists, and the no-load air gap magnetic density is higher; and the armature reaction flux is vertical to the permanent magnet flux in space, and the stronger demagnetization-resisting capacity is ensured.

Description

technical field [0001] The invention belongs to the field of motor manufacturing, and specifically relates to a modular magnetic flux switching permanent magnet motor with simple and firm structure, strong torque output capability and high power density. Background technique [0002] As the country with the largest reserves of rare earth materials in the world, our country vigorously researches and promotes the application of various new permanent magnet motors represented by rare earth permanent magnet motors, which has important theoretical significance and application value. Regardless of whether it is used for power generation or electric operation, new permanent magnet motors with the characteristics of high efficiency, high torque (power) density and low loss are showing a trend of accelerated development. So far, domestic and foreign research hotspots have been focused on rotor permanent magnet motors represented by surface-mounted, plug-in and built-in types. Howeve...

AI Technical Summary

Problems solved by technology

[0003] 1. For the structure where the permanent magnet is pasted on the surface of the rotor or inserted between the salient poles of the rotor, in order to overcome the centrifugal force generated by high-speed operation, it is usually necessary to make an auxiliary permanent magnet fixing device, and the permanent magnet is between the stator and the rotor. Increasing the length of the air gap not only increases the volume of the motor, but also weakens the magnetic density of the air gap and affects the output.

[0004] 2. For the embedded structure in which the permanent magnet is embedded in the rotor core, the mechanical strength of the rotor will be affected, and an auxiliary magnetic bridge is required, which will also increase the manufacturing process

And the modular structure magnetic flux switching motor proposed by the present invention has not yet been published

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