电工技术学报  2015, Vol. 30 Issue (16): 1-9    DOI:
电机电器 |
小型异步电机模态计算与试验分析
谢颖,王严,吕森,葛红岩,刘海松
哈尔滨理工大学电气与电子工程学院 哈尔滨 150080
Modal Calculation and Test of Small Asynchronous Motor
Xie Ying,Wang Yan,Lü Sen,Ge Hongyan,Liu Haisong
Harbin University of Science and Technology Harbin 150080 China
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摘要 以一台1.1kW小型异步电机为样机,采用锤击法进行模态试验,试验对象分别为不带绕组的定子,带有未浸漆绕组的定子,带有浸漆绕组的定子,带有去掉端部绕组的定子以及整机,同时保证所有试验模型的定子均为同一个定子。利用锤击模态试验测得的加速度频响函数的幅值和相位对定子径向二阶固有频率进行了判定。基于试验结果分析了绕组浸漆前后定子固有频率的变化以及端部绕组对定子固有频率的影响。用数值法分别计算了不带绕组定子及去掉端部绕组定子的模态;同时建立了试验样机的三维全域有限元计算模型,并且在转子和轴承连接处施加了约束条件,充分考虑了转子对电机模态的影响,计算与试验结果进行了比较。最后讨论了转子、端盖和机壳对电机定子模态的作用。
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关键词 小型异步电机锤击模态试验幅值和相位径向固有频率有限元    
Abstract:Taking a small asynchronous motor of 1.1kW as prototype, modal tests were done using hammering method. The stators with no windings, with unvarnished windings, with varnished windings and with windings which were cut off the ends, as well the whole motors were as the test objects. Meanwhile it is ensured that the stators of all the test models are identical. The second order radial natural frequency of the stator was recognized through the magnitude and phase of the acceleration frequency response functions derived from the tests. Base on the test results, the difference between the natural frequencies of stator with varnished and unvarnished windings was analyzed; as well the influence that the end windings made on the natural frequency of stator was discussed. The natural frequencies of the stators without windings and with windings which were cut down the ends were calculated respectively by numerical method. At the same time, 3D whole domain finite element method(FEM) calculation model of the prototype was established, and a constraint was imposed on the connection of rotor and bearing, so full consideration was made into the influence that rotor made on the modal of the motor. The calculated and test results were compared. Finally, the effects that the rotor, the end caps and the motor shell made on the modal of the stator were discussed.
Key wordsSmall asynchronous motor    hammering modal test    magnitude and phase    radial natural frequency    finite element method   
收稿日期: 2014-03-01      出版日期: 2015-09-14
PACS: TM343  
基金资助:国家自然科学基金(51107022),黑龙江省政府博士后科研启动项目(LBH-Q12061),黑龙江省普通高等学校新世纪优秀人才培养计划(1252-NCET-015)和黑龙江省研究生创新科研项目(YJSCX2012- 106HLJ)资助
作者简介: 谢 颖 女,1974年生,博士,教授,研究方向为电机内电磁场、温度场和振动噪声计算及感应电机故障诊断。王 严 男,1988年生,硕士研究生,研究方向为电机电磁场及振动噪声计算。
引用本文:   
谢颖,王严,吕森,葛红岩,刘海松. 小型异步电机模态计算与试验分析[J]. 电工技术学报, 2015, 30(16): 1-9. Xie Ying,Wang Yan,Lü Sen,Ge Hongyan,Liu Haisong. Modal Calculation and Test of Small Asynchronous Motor. Transactions of China Electrotechnical Society, 2015, 30(16): 1-9.
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