Abstract
Vibration is a major problem of switched reluctance motor drive system, which can cause undesirable acoustic noise. Acoustic noise is severe when the periodic excitation of the machine normal force excites a natural vibration mode of the stack. So, it is very important for making the periodic excitation frequency to avoid the natural vibration frequency of the stator. In this paper, the electromagnetic radial force and vibration modes are calculated respectively for obtaining the periodic excitation and natural frequencies of stator with windings based on 3D finite element. FFT is used to analyse the dynamic vibration response of the switched reluctance motor drive system excited by the radial force under the environment of SIMULINK. In the end, a prototype motor is built and the numerical analysis is applied to a four phase 8/6 poles switched reluctance motor. An experimental validation of an operation machine is presented.
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