Axial magnetic field flux switching motor with staggered double-stator hybrid excitation

Abstract

The invention provides a staggered dual-stator hybrid excitation axial magnetic field flux switching motor, which comprises a first stator, a second stator and a rotor, wherein the first stator and the second stator are coaxially installed, and the rotor is located between the two stators in a mode of reserving an air gap with the stators; each stator comprises a plurality of magnetic conductive iron cores, permanent magnets, armature windings and excitation windings which are alternately arranged; each magnetic conductive iron core comprises a stator tooth a, a stator tooth c and a stator tooth b located between the stator tooth a and the stator tooth c, the stator tooth b is of a two-tooth structure, a gap is set between the stator tooth b and the stator tooth a and the stator tooth c which are located at two sides of the stator tooth b, the permanent magnets are magnetized along a parallel permanent magnet tangential direction, the adjacent permanent magnets are opposite in magnetizing direction, the armature windings are wound on two adjacent stator teeth a, the excitation windings are wound at the root of the stator teeth b, and the two stator are installed in a mode of staggering by a mechanical angle along the axial direction; and the rotor comprises a magnetic isolating disk, a rotor core a and a rotor core b, the rotor core a and the rotor core b are respectively arranged at two sides of the magnetic isolating disk in a symmetrical manner, and each core comprises a plurality of rotor teeth and magnetic conductive bridges connecting the rotor teeth.

Description

technical field [0001] The invention belongs to the technology of hybrid excitation motors, in particular to a hybrid excitation type axial magnetic flux switching motor with offset double stators. Background technique [0002] The constant magnetic field generated by permanent magnets makes permanent magnet motors have disadvantages such as difficult voltage adjustment and narrow speed regulation range, which limits their popularization and application in constant voltage power generation and other fields. Therefore, how to effectively adjust the air gap magnetic field in permanent magnet motors It has attracted the attention of scholars at home and abroad. [0003] The emergence of hybrid excitation motors can effectively solve the above problems. It not only inherits many advantages of permanent magnet motors such as high power density and high reliability, but also has the advantages of flexible adjustment of the magnetic field of electric excitation motors. It is widely...

AI Technical Summary

Problems solved by technology

However, the range of magnetic adjustment is still not wide enough, the cogging torque and harmonic components are relatively large, and there is still a lot of room for development in the performance of magnetic enhancement and magnetic weakening, which limits its application in wide-speed drive systems.

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