A Hybrid Excitation Flux Switching Motor with Claw Pole Bypass Structure in the Stator

Abstract

The invention discloses a mixed excitation flux switching motor having a stator with a claw pole bypass structure. The stator, a rotor and an air gap which are coaxially arranged are arranged on a motor; the stator is composed of a plurality of U-shaped stator iron cores equidistantly arranged at intervals along the circumference, a permanent magnet embedded between the adjacent U-shaped stator iron core teeth, an armature winding wound on the adjacent U-shaped stator iron core teeth, a claw pole bypass component and an excitation coil; the claw pole bypass component is composed of a primary iron core ring connected with U-shaped stator iron core magnet yokes with different magnetic polarities through the claw pole, a secondary iron core ring and a shielding iron core ring for connecting the primary iron core ring and the secondary iron core, the primary iron core ring, the secondary iron core and the shielding iron core ring form an annular cavity structure in a surrounding way; the excitation coil is placed in the annular cavity; and the rotor is composed of a rotor iron core and a rotor salient pole. The flux switching motor main body structure cannot be changed, the motor has reliable structure and can conveniently regulate the air gap magnetic field by placing the excitation coil through the claw pole bypass structure, and is suitable for the wide-speed regulation application occasion.

Description

technical field

[0001] The invention relates to a hybrid excitation magnetic flux switching motor, in particular to a hybrid excitation magnetic flux switching motor with a claw pole bypass structure on the stator in the axial or radial direction. Background technique

[0002] Flux switching permanent magnet motor is a new type of stator permanent magnet doubly salient pole motor. Compared with the traditional rotor permanent magnet motor, the stator of the flux switching permanent magnet motor is equipped with permanent magnets and concentrated armature windings, and the rotor structure is extremely simple. Due to the special winding complementary structure, the motor has highly sinusoidal permanent magnet flux linkage and no-load induced electromotive force, high torque output capacity and power density.

[0003] However, due to the strong magnetic field characteristics of permanent magnet materials, the air gap magnetic field in permanent magnet motors remains basically ...

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