Calculation And Analysis Of Vibration And Noise Of Amorphous Alloy High-speed Permanent Magnet Motor

Amorphous alloy is a new type of high-quality material with green and energy-saving properties.It has outstanding properties of high magnetic permeability and low loss.It can be used in the motor core to replace the traditional silicon steel sheet material,which can significantly reduce the iron consumption of the motor and improve the motor.The efficiency and energy saving effect are very significant.Nevertheless,owing to the amorphous alloy material’s relatively high magnetostriction coefficient,the amorphous alloy iron core cannot be held too hard with the clamps.Therefore,the magnetostriction to the vibration of the amorphous alloy iron core is relatively minimal,resulting in a vibration amplitude of the amorphous alloy high-speed permanent magnet motor that is bigger than that of the typical silicon steel sheet motor.The noise is more noticeable when using a frequency converter power supply.Therefore,research into the vibration and noise of amorphous alloy high-speed permanent magnet motors is critical.The vibration and noise of a 4-pole 18-slot 15 k W amorphous alloy high-speed permanent magnet motor are analyzed and calculated in this work,as well as the affecting factors and vibration and noise suppression strategies.To begin,the 15 k W amorphous alloy high-speed permanent magnet motor’s vibration and noise are calculated using the multi-physics coupling software COMSOL,and the sound field distribution and noise value around the motor are determined.correctness.Simultaneously,the radial electromagnetic force and stator mode are computed and analyzed,the main spatial order of the radial electromagnetic force is acquired,as well as the frequency and mode shape of associated modes,and the first six-order mode diagram and natural frequency are calculated.Avoid resonance by keeping the motor structure’s inherent frequency away from the radial electromagnetic force frequency in the air gap.Furthermore,the effect of structural factors on vibration and noise,as well as the suppression effect,is investigated for an amorphous alloy high-speed permanent magnet motor.Included is an examination of the effects of slot width,air gap length,pole arc coefficient,and permanent magnet structure on motor vibration and noise,as well as an examination of unequal magnetic poles,auxiliary slots on stator teeth,and rotor segmental misalignment on motor vibration and noise.At last,the impact of related parameters other than the structure on the vibration and clamor of the shapeless combination high-speed lasting magnet engine and the concealment impact are analyzed.Counting the investigation of the magnetostriction coefficient and the impact of diverse driving strategies on the vibration and commotion of the engine,and encourage examination of the impact of the current sounds of the inverter and the diverse control strategies on the vibration and clamor of the engine beneath the control supply of the variable recurrence wave and the concealment impact.On the basis of over examination,a comprehensive examination strategy for the vibration and clamor of the undefined combination high-speed lasting magnet engine is given,which gives a viable reference for the vibration and commotion decrease of the engine,and lays a great establishment for the following step to consider the optimization of the vibration and clamor of the engine.