考虑定子各向异性的永磁同步电机振动噪声优化

发布时间：2018-05-27 12:07

本文选题：永磁同步电机 + 定子各向异性　；参考：《西安交通大学学报》2017年05期

【摘要】：为了有效降低永磁同步电机的振动和噪声,在考虑定子各向异性建模的基础上,提出了一种通过定子结构模态规划来优化振动噪声的方法。首先分析了对定子模态频率较为敏感的各向异性材料参数,通过定子铁芯和总成的模态试验进行了参数识别;随后分析了电机在额定工况下的振动和噪声峰值来源,并且在电磁力二维分解的基础上提出了降低电机噪声的模态规划目标;最后分析了主要结构参数对定子模态频率的灵敏度,最终选择定子轭部厚度作为优化参数来实现模态频率的规划。研究结果表明:通过考虑定子材料的各向异性可以建立较为准确的定子模型,模态频率计算值与实测结果的误差都在4%以内;仿真优化后的电机振动峰值下降了58%,总体噪声功率级(A)降低了4.3dB。
[Abstract]:In order to reduce the vibration and noise of permanent magnet synchronous motor (PMSM) effectively, a method of optimizing vibration and noise by stator structural modal planning is proposed on the basis of stator anisotropy modeling. The parameters of anisotropic materials which are sensitive to the stator modal frequency are analyzed firstly, and the parameters are identified through the modal tests of the stator core and assembly, and then the source of the peak vibration and noise of the motor under rated working conditions is analyzed. On the basis of the two-dimensional decomposition of electromagnetic force, the modal planning goal of reducing motor noise is proposed. Finally, the sensitivity of main structural parameters to stator modal frequency is analyzed. Finally, the stator yoke thickness is chosen as the optimal parameter to realize the modal frequency planning. The results show that a more accurate stator model can be established by considering the anisotropy of the stator material, and the error between the calculated modal frequency and the measured results is less than 4%. After the simulation, the peak vibration of the motor is reduced by 58 and the total noise power level is reduced by 4.3 dB.
【作者单位】：同济大学新能源汽车工程中心;泛亚汽车技术中心有限公司;
【基金】：国家自然科学基金资助项目(51375343) 国家重大科学仪器开发专项资助项目(2012YQ150256)
【分类号】：TM341

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