Stator permanent magnet type field modulation motor

Abstract

The invention discloses a stator permanent magnet type field modulation motor. The motor comprises a housing, a stator, an air gap, a rotor and a rotating shaft from outside to inside. The housing, the stator, the air gap, the rotor and the rotating shaft are coaxially arranged. The stator is fixed in the housing through a dovetail groove. The air gap is arranged between the stator and the rotor. The rotor is fixed outside the rotating shaft. The stator comprises a plurality of stator iron cores which are arranged at equal intervals along the circumference, stator permanent magnets embedded between adjacent stator iron cores, stator teeth extending out of the inner circumferences of the stator iron cores, and multiphase symmetric armature windings embedded between adjacent stator teeth. The rotor comprises an annular rotor iron core, and a plurality of rotor salient poles extending out of the outer peripheries of the rotor iron cores. According to the invention, the armature windings and the permanent magnets are arranged on the stator side; the air-gap magnetic permeance change caused by the rotor salient pole is utilized to modulate the stator magnetic field, so as to achieve electromechanical energy conversion; and the stator permanent magnet type field modulation motor is characterized in that the rotor structure is simple, the mechanical reliability is high, the heat radiation of the permanent magnets is easy, and the processing and manufacturing is convenient.

Description

technical field [0001] The invention relates to a motor, in particular to a field-modulated permanent magnet motor in which armature windings and permanent magnets are placed on the stator side. Background technique [0002] At present, the types of permanent magnet motors that have been studied mainly include: ordinary permanent magnet synchronous motors, doubly salient permanent magnet motors, flux switching permanent magnet motors, flux inversion permanent magnet motors, transverse flux permanent magnet motors, axial Flux permanent magnet motor, magnetic gear compound permanent magnet motor, etc. Although the topological structures of the above-mentioned types of permanent magnet motors are quite different, their basic working principles are the same, that is, they all use the air gap fundamental magnetic field to realize electromechanical energy conversion. In contrast, the field-modulated permanent magnet motors that have appeared in recent years, based on the magnetic...

AI Technical Summary

Problems solved by technology

[0004] Technical problem: In order to solve the problems of low mechanical reliability of the rotor and poor heat dissipation of the permanent magnet in the existing field modulation permanent magnet motor, the present invention provides a new type of field modulation that places both the armature winding and the permanent magnet on the stator side Permanent Magnet Motor Topology

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