基于有限元法的永磁同步电机定子固有频率研究

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英文篇名：Research on the Natural Frequency of Stator of Permanent Magnet Synchronous Motor Based on Finite Element Method 作者：黄厚佳 ; 李全峰 ; 徐余法 英文作者：HUANG Houjia;LI Quanfeng;XU Yufa;School of Electrical Engineering, Shanghai Dianji University;School of Mechatronic Engineering and Automation, Shanghai University;Shanghai Polytechnic University; 关键词：永磁同步电机 ; 固有频率 ; 电磁振动噪声 ; 有限元仿真 英文关键词：permanent magnet synchronous motor(PMSM);;natural frequency;;electromagnetic vibration and noise;;finite element simulation 中文刊名：ZXXD 英文刊名：Electric Machines & Control Application 机构：上海电机学院电气学院;上海大学机电自动化工程学院;上海第二工业大学; 出版日期：2019-04-10 出版单位：电机与控制应用 年：2019 期：v.46;No.352 基金：国家科技支撑计划项目(2015BAG03B00) 语种：中文; 页：ZXXD201904011 页数：6 CN：04 ISSN：31-1959/TM 分类号：68-73

摘要

定子模态分析是研究永磁同步电机(PMSM)电磁振动噪声的重要环节,对定子固有频率进行准确预测是抑制PMSM电磁振动噪声的基础。运用解析法分析了影响定子固有频率的主要因素。建立了定子系统各部分有限元仿真模型,通过有限元仿真和相关数据处理分析研究了绕组、机壳和端盖对定子固有频率的影响。结果表明:当绕组等效弹性模量低于某一临界值时,会使定子固有频率降低,而高于该临界值时,会使定子固有频率升高;机壳和端盖均会使定子的固有频率大幅度提高。
        The stator modal analysis was an important segment of studying the electromagnetic vibration and noise of permanent magnet synchronous mortor(PMSM), and the accurate prediction of the natural frequency of stator was the basis of suppressing the electromagnetic vibration and noise. Firstly, the main factors affecting the natural frequency of stator were analyzed by the analytical method. Secondly, the finite element simulation models of each part of the stator system were established, and the influences of the winding, case and end cover on the stator's natural frequency were studied through finite element simulation and related data processing and analysis. The results showed that when the equivalent elastic modulus of the winding was lower than a critical value, the stator's natural frequency would be reduced; while when the equivalent elastic modulus of the winding was higher than this critical value, the stator's natural frequency would be increased. Both the case and the end cover could greatly increase the natural frequency of the stator.

引文

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