Method for weakening target harmonic waves in axial flux motor

Abstract

The invention discloses a method for weakening target harmonics in an axial magnetic flux motor. The axial magnetic flux motor comprises stators; the stators are provided with stator windings; the stator windings can generate magnetic field harmonic waves; the magnetic field harmonic waves comprise target harmonic waves and fundamental waves, the number of the stators is two; the number of the stator windings, the number of the magnetic field harmonic waves, the number of the target harmonicwaves and the number of the fundamental waves are all two. According to the method for weakening the target harmonic waves in the axial magnetic flux motor, the two target harmonic waves are mutually weakened by adjusting the relative positions of the two stators and controlling the current initial phase angles of the two stator windings, and meanwhile the amplitudes of the two fundamental waves are kept unchanged. According to the method, additional adjusting parts do not need to be introduced, the purpose of weakening the target harmonic waves can be achieved only by changing the relative position of the stators and changing the initial phase angles of the stators, operation is easy, and implementation is easy.

Description

technical field [0001] The invention relates to the technical field of axial flux motors, and more specifically, to a method for weakening target harmonics in axial flux motors. Background technique [0002] Concentrated winding axial flux motor has the advantages of simple manufacturing process, high power density and torque density, small cogging torque, small end cap size, and less copper wire consumption, so it is widely used. However, compared with the traditional distributed winding, the concentrated winding will generate rich magnetic field harmonics after the current is applied. These magnetic field harmonics, especially the low-order harmonics, will increase the eddy current loss and core loss of the motor. , The deterioration of vibration and noise will seriously affect the performance of the motor. For the axial flux motor with double stators, the above disadvantages also exist. Contents of the invention [0003] The purpose of the invention is to attenuate th...

AI Technical Summary

Problems solved by technology

However, compared with the traditional distributed winding, the concentrated winding will generate rich magnetic field harmonics after the current is applied. These magnetic field harmonics, especially the low-order harmonics, will increase the eddy current loss and core loss of the motor. , Vibration and noise deterioration, seriously affecting the performance of the motor

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