A rotor permanent magnet type dual rotor axial magnetic field hybrid excitation flux switching motor

Abstract

The invention discloses a rotor permanent magnet double-rotor axial field hybrid excitation flux switching motor, which comprises a first rotor, a second rotor, a stator and a permanent magnet, and the first rotor, the second rotor and the stator are convex Pole topology, the first rotor and the second rotor are respectively located on both sides of the stator and arranged symmetrically with respect to the stator; both the first rotor and the second rotor include rotor teeth and fixed disks, and the permanent magnets are fixed on the rotor teeth above; the stator includes spacer discs, stator cores fixed on both sides of the spacer discs, armature windings wound on the stator cores and field windings wound on the stator cores; the axial length of the motor of the present invention is short , compact structure, which improves the torque density and power density of the motor; the permanent magnet is placed on the rotor to relieve the saturation of the stator magnetic circuit, increase the space of the stator winding slot, reduce the harmonic loss of the motor and the copper loss of the winding, and broaden the constant power speed regulation of the motor range, improving motor efficiency.

Description

technical field [0001] The invention belongs to the technology of hybrid excitation motors, in particular to a rotor permanent magnet double-rotor axial magnetic field hybrid excitation flux switching motor. Background technique [0002] The permanent magnet flux switching motor usually adopts a doubly salient pole structure. The armature winding and the permanent magnet are located on the stator, and the rotor has neither winding nor permanent magnet. The structure is simple, so that the motor has high power density, high torque density, Efficiency and other advantages. Due to the inherent characteristics of permanent magnets, it is difficult to adjust the constant magnetic field of the air gap of the motor, resulting in a narrow range of speed regulation of the motor, which limits its application in the field of constant voltage power generation and wide range speed regulation drive. Therefore, the permanent magnet flux switching motor internal air gap is realized. The ef...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a rotor permanent magnet double-rotor axial magnetic field hybrid excitation flux switching motor, which solves the problems of high loss, poor overload capacity and low heat dissipation efficiency of the stator permanent magnet hybrid excitation motor in the prior art.

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