Analysis of modal frequency splitting characteristics of motor stator vibration

被引：0
|
作者：
Xu G.-H. [1 ]
Zhu C.-S. [1 ]
机构：
[1] College of Electrical Engineering, Zhejiang University, Hangzhou
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2023年 / 36卷 / 04期
关键词：
frequency splitting; modal frequencies; modal shapes; motor stator; ring model;
D O I：
10.16385/j.cnki.issn.1004-4523.2023.04.008
中图分类号：
学科分类号：
摘要：
A key way to reduce vibration and noise of motor is to effectively suppress the vibration of the motor stator excited by the radial electromagnetic force in the motor，whereas the accurate calculation of modal frequencies and modal shapes is the basis for suppressing the radial vibration of the motor stator. The elasticity analytical model of the circular ring is used as the vibration analysis model of the motor stator，based on which the modal analysis of the motor stator under the unconstrained state is carried out，and the analytical solutions of the modal frequencies and modal shapes of the stator’s radial vibration are obtained. Taking cogging and footing as typical additional structures，the perturbation method is introduced to analyze the frequency splitting phenomenon in the motor stator，and the criteria for determining whether the frequency is split or not and the order of the splitting are summarized. The validity of the theoretical methods and calculations in this paper is verified by finite element software ANSYS. The results show that the established two-dimensional ring model can be accurately and efficiently applied to the analysis of the modal characteristics of the motor stator，and the distribution form of the additional structure has an important influence on the frequency splitting characteristics of the stator. © 2023 Nanjing University of Aeronautics an Astronautics. All rights reserved.
引用
收藏
页码：953 / 962
页数：9
相关论文
共 23 条
  • [1] Wang Ding, Zhu Changsheng, Fu Jiajing, Electromagnetically excited vibration analysis for an asynchronous electrical machine with finite element method, Journal of Vibration and Shock, 31, 2, pp. 140-144, (2012)
  • [2] (1982)
  • [3] Li Xiaohua, Huang Surong, Analysis of natural frequencies of stator structure of permanent magnet synchronous motors for electric vehicles, Proceedings of the CSEE, 37, 8, pp. 2383-2391, (2017)
  • [4] Gieras J F, Wang C, Lai J C．, Noise of Polyphase Electric Motors, (2005)
  • [5] Mccloskey A, Arrasate X，, Hernandez X，, Et al., Analytical calculation of vibrations of electromagnetic origin in electrical machines［J］, Mechanical Systems and Signal Processing, 98, pp. 557-569, (2018)
  • [6] Hu S L，, Zuo S G, Wu H, An analytical method for calculating the natural frequencies of a motor considering orthotropic material parameters［J］, IEEE Transactions on Industrial Electronics, 66, 10, pp. 7520-7528, (2018)
  • [7] Girgis R S, Vermas S P．, Method for accurate determination of resonant frequencies and vibration behaviour of stators of electrical machines［C］, IEE Proceedings B：Electric Power Applications, 128, 1, pp. 1-11, (1981)
  • [8] Xing Z Z, Wang X H, Zhao W L, Calculation method for natural frequencies of stator of permanent magnet synchronous motors based on three-dimensional elastic theory, 2021 13th International Symposium on Linear Drives for Industry Applications, (2021)
  • [9] Jiajun Qiu, Wenlan Li, The influence of various boundary constraints on the natural frequencies of hydrogene-rator stator system, Large Electric Machine and Hydraulic Turbine, 2, pp. 1-5, (1998)
  • [10] Yu Shenbo, Wang Hui, Investigation of circumferential mode frequencies of circular cylindrical shells of stator in electric motor［J］, Electric Machines and Control, 18, 6, pp. 102-107, (2014)
123