Doubly salient permanent magnet synchronous motor with unequally spaced stator poles

Abstract

The invention belongs to the field of doubly salient permanent magnet synchronous motors and discloses a doubly salient permanent magnet synchronous motor with unequally spaced stator poles. The doubly salient permanent magnet synchronous motor comprises a stator, a rotor, a permanent magnet, an armature winding and a rotating shaft, wherein the rotor is arranged in the stator and rotates relative to the stator; the rotating shaft is arranged in the rotor and rotates along with the rotor; the permanent magnet is symmetrically arranged at a yoke part of the stator and provides excitation for the air-gap field of the motor; the armature winding is coiled on the stator poles of the stator, and after the armature winding is energized, the magnetic field of the armature winding interacts with the magnetic field of the permanent magnet to rotate the rotor. Through the doubly salient permanent magnet synchronous motor, a problem that the motor cannot be started in a bidirectional way in the prior art is solved, and the stator poles are unequally spaced, so that the output torque is improved, and furthermore, through superposition on a multi-module structure, the output torque can be superposed, so that the toque pulsation is reduced, and the fault tolerance and the reliability are improved.

Description

technical field [0001] The invention belongs to the field of double salient pole permanent magnet synchronous motors, and more specifically relates to a double salient pole permanent magnet synchronous motor with unequal spacing between stator poles. Background technique [0002] In recent years, doubly salient pole motors in which the stator poles and rotor poles are salient pole structures have been widely studied. Doubly salient pole motors can be divided into doubly salient permanent magnet synchronous motors and switched reluctance motors according to whether there are permanent magnets. Compared with the switched reluctance motor, the pole permanent magnet synchronous motor only adds permanent magnets to the stator, so that a higher output torque can be obtained. [0003] Switched reluctance motors are divided into two types: multi-phase switched reluctance motors and single-phase switched reluctance motors. The multi-phase switched reluctance motor has the advantages...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a double salient pole permanent magnet synchronous motor with unequal spacing between stator poles, in which through the research and design of the specific structure and setting method of the stator poles of its key components, The purpose is to increase the effective area of ​​the slot between the stator poles, thereby solving the technical problems of low motor output torque and inability to start in both directions in the prior art

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