Vibration Characteristic Analysis and Comparison of High-Speed Switched Reluctance Motor with Amorphous Alloy Core

High-speed switched reluctance motor (SRM) with amorphous alloy core has attracted great attention because of high efficiency and high-power density. However, its application is limited due to severe vibration and noise. To address these problems, this paper analyzed the effect of current waveform on vibration performance of high-speed SRM. First, with the properties of amorphous alloy core considered, an improved calculation method for radial force was proposed. Then, according to the different control strategies, the effects of current waveforms on radial force were compared. To analyze the vibration performance of motor, natural frequency of stator system was analyzed through considering the axial mode of high-speed SRM. Last, the magnetostriction properties of amorphous alloy core was analyzed and the vibration performance excited by different current waveforms were compared by finite element method (FEM). In addition, a 20kW 12/8 high-speed SRM was manufactured and vibration acceleration was tested to verify the effect of current waveform on motor vibration. Through comparison of experiments and FEM, the proposed radial force calculation method is verified to be with high accuracy.