Hybrid excitation type magnetic flux switching motor with K-shaped stator cores

Abstract

The invention discloses a hybrid excitation type magnetic flux switching motor with K-shaped stator cores, and belongs to the technical field of fabrication of a motor. Permanent magnets, armature windings and single-phase excitation windings are arranged at a stator part, stator cores are in K shapes, each permanent magnet is embedded between adjacent stator cores, the armature windings are three-phase concentrated windings which are wound at inner sides of stator teeth of adjacent K-shaped stator cores at two sides of each permanent magnet in a bridging way, the single-phase excitation windings are wound at outer sides of two stator teeth of each K-shaped stator core in a bridging way, and no permanent magnet and no winding are arranged at a rotor part. The hybrid excitation type magnetic flux switching motor is compact, simple and firm in structure, the no-load magnetic flux of the magnetic flux switching motor is maintained to be dual-polarity characteristic, meanwhile, a hybrid excitation function is achieved, the magnetic flux switching motor has relatively high torque output capability and relatively high power density, the regulation range of an air-gap magnetic field is broaden by adjusting an excitation current, and the magnetic flux switching motor is good in magnetic regulation performance.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing, and in particular relates to a K-shaped stator core mixed excitation magnetic flux switching motor. Background technique [0002] With the continuous improvement of the cost performance of new rare earth permanent magnet materials such as NdFeB, rare earth permanent magnets such as permanent magnet brushless DC motors and permanent magnet synchronous motors have the advantages of smaller volume, higher efficiency and better dynamic response characteristics. Electric motors are widely used in more and more industrial drive and servo control fields. However, due to the influence of the inherent characteristics of the permanent magnet material, the magnetic field generated by the permanent magnet is difficult to adjust, and the air gap magnetic field inside the permanent magnet motor is basically kept constant, which makes it difficult to adjust the air gap magnetic field inside the perm...

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Problems solved by technology

However, due to the influence of the inherent characteristics of the permanent magnet material, the magnetic field generated by the permanent magnet is difficult to adjust, and the air gap magnetic field inside the permanent magnet motor is basically kept constant, which makes it difficult to adjust the air gap magnetic field inside the permanent magnet motor, resulting in its adjustment. The speed range is limited, which makes the application of permanent magnet motors subject to certain restrictions in applications such as aerospace and electric vehicles that require wide speed regulation direct drive

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