Flux-switching type permanent magnet motor with permanent magnet fixing bosses

Abstract

The invention discloses a flux-switching type permanent magnet motor with permanent magnet fixing bosses and belongs to the technical field of manufacture and applications of motors. The motor is formed by a stator iron core, permanent magnets, an armature winding, a rotor iron core and the permanent magnet fixing bosses; the permanent magnets are fixed on a stator and tangentially magnetize alternately; the permanent magnet fixing bosses are arranged on contact surfaces of the stator iron core and the permanent magnets and towards the permanent magnets; the permanent magnet fixing bosses and the stator iron core are connected into a whole; a groove is formed in the permanent magnet; the size of the groove is matched with that of the permanent magnet fixing bosses. According to the flux-switching type permanent magnet motor with permanent magnet fixing bosses, the installation accuracy of the permanent magnet is greatly improved due to the permanent magnet fixing bosses, falling risks of the permanent magnet along the radial direction of the motor are reduced, and the motor reliability is improved.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing and its application. Background technique [0002] French scholar E. Hoang first proposed a three-phase 12 / 10 permanent magnet flux switching motor at the EPE conference in 1997. The stator is a "U"-shaped magnetic core with a permanent tangentially alternately magnetized core embedded in the middle. magnet. [0003] As the energy crisis continues to intensify, it has become a worldwide consensus to use permanent magnet excitation instead of electric excitation to save energy consumption. At the same time, since my country is the country with the most abundant rare earth resources in the world, open research and promotion of rare earth permanent magnet motors with new structures can significantly improve the efficiency and power density of the motor, which has important theoretical significance and use value. Especially in the stator permanent magnet motors that have appeared in rece...

AI Technical Summary

Problems solved by technology

[0004] However, in the current proposed flux switching permanent magnet motor, the permanent magnets are all cuboids, and the surface in contact with the stator core is relatively smooth, which is easy to cause sliding in the slot where it is located, is not easy to fix, and may fall off along the radial direction of the motor. Possibility, bring safety hazard to the normal operation of the motor

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