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永磁同步电机磁固热多物理场耦合振动噪声分析

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针对永磁同步电机的电磁振动噪声多物理场耦合问题，在磁固耦合的基础上，考虑温度场对电机结构和电磁特性的影响，通过有限元法提出一种磁固热多物理场耦合模型，分析在热应力和电磁力共同作用下电机的结构变形，突出对比强弱耦合变形情况下电机电磁力及振动噪声情况。以一台6极36槽内置式永磁同步电机(Interior Permanent Magnet Synchronous Motor，IPMSM)为研究对象，综合考虑磁场、温度场和结构场多物理场耦合作用，建立永磁同步电机有限元模型，用ANSYS Workbench准确计算电机各种损耗并进行温度反馈，并通过实验验证模型准确性。结果表明，考虑温度分布和结构变形有助于准确预测和评估电机的振动噪声水平。
Vibration and Noise Analysis of Magnetic-solid-thermal Multi-physical Field Coupling of Permanent Magnet Synchronous Motors
The multi-physical field coupling problem of electromagnetic vibration and noise of permanent magnet synchronous motors was studied.Based on magnetic solid coupling,and considering the influence of temperature field on the structure and electromagnetic characteristics of the motor,the finite element model of the motor of magnetic-solid-heat multi-physical field coupling was established.The structural deformation of the motor under the combined action of thermal stress and electromagnetic force was analyzed,and the electromagnetic force and vibration and noise under the strong coupling deformation and weak coupling deformation were highlighted and compared.With a 6-pole,36-slot built-in permanent magnet synchronous motor as the research object,its finite element model was established by comprehensively considering the coupling effects of multi-physical fields such as magnetic field,temperature field and structure.Various losses of the motor were accurately calculated by means of ANSYS Workbench code and temperature feedback was carried out.The accuracy of the model was verified by experiments.The results show that considering the temperature distribution and structural deformation is helpful to accurately predict and evaluate the vibration and noise level of the motor.

vibration and wavepermanent magnet synchronous motorfinite element methodmagnetic-solid-thermal couplingtemperature distributionelectromagnetic vibration noise

孟羚玉、陈长征、史宗辉、孙鲜明

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沈阳工业大学 机械工程学院,沈阳 110870

宁波坤博测控科技有限公司,浙江 宁波 315200

振动与波 永磁同步电机 有限元法 磁固热耦合 温度分布 电磁振动噪声

国家自然科学基金资助项目国家自然科学基金资助项目辽宁省自然科学基金重点科技创新基地联合基金资助项目

52175105516753502022KF2404

2024

10.3969/j.issn.1006-1355.2024.04.007

噪声与振动控制
中国声学学会

噪声与振动控制

CSTPCD北大核心
影响因子：0.622
ISSN：1006-1355
年,卷(期)：2024.44(4)