Radial force calculation and acoustic noise prediction in switched reluctance machines
Radial force calculation and acoustic noise prediction in switched reluctance machines
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DOI：
10.1109/ias.1999.799157
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发表时间：
1999-10
期刊：
影响因子：
--
通讯作者：
M. Anwar;I. Husain
中科院分区：
文献类型：
--
作者：
M. Anwar;I. Husain
本文提出了一种计算开关磁阻电机径向力和预测噪声的解析方法。SRM的主要噪声源是定子的径向磁力引起的具有周向振型的共振振动。确定了径向力与径向振动之间的解析关系，可用于预测工作频率下的噪声功率水平。振动和声音是机器尺寸、材料性能和转速的函数。通过几何设计变化，可以有效地利用定子的周向模态振型、定子的固有模态频率和径向磁力的频谱来设计具有最小噪声的srm。本文所建立的模型还可以分析定子和转子极数对噪声的影响。利用有限元软件进行了磁动力学仿真，验证了采用该解析模型计算的径向力。
The paper presents an analytical method for calculating the radial force and predicting the acoustic noise in switched reluctance machines. The main source of acoustic noise in an SRM is the radial magnetic force inducing resonant vibration with circumferential mode-shapes of the stator. An analytical relationship between radial force and radial vibration is determined, which can be used to predict the noise power level at the frequency of operation. The vibration and sound are functions of machine dimensions, material properties and rotational speed. The knowledge of the circumferential mode-shapes of vibration, the natural mode-frequencies of the stator and the frequency spectrum of the radial magnetic force can be effectively utilized to design SRMs with minimal noise through geometrical design variations. The effect of the number of stator and rotor poles on acoustic noise can also be analyzed with the model presented in this paper. Magneto-dynamic simulation by finite element software is also carried out to verify the calculation of radial force using the proposed analytical model.