The Motor Bearing Discharge Breakdown Based on the Multi-Physics Field Analysis

被引：0
|
作者：
Wang Q. [1 ]
Liu R. [1 ]
Ren X. [1 ]
机构：
[1] School of Electrical Engineering, Beijing Jiaotong University, Beijing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2020年 / 35卷 / 20期
关键词：
Bearing breakdown; Electric-thermal coupling; Electrical corrosion of the bearing; High frequency bearing current; The minimum oil film thickness;
D O I：
10.19595/j.cnki.1000-6753.tces.191138
中图分类号：
学科分类号：
摘要：
Motor bearing discharge process is a key problem in the research of the high frequency bearing current and bearing damage. The multi-physics finite element calculation was adopted to analyze the bearing breakdown process and mechanism. Firstly, combined with the elastohydrodynamic lubrication theory, the formula of the Hertz contact area and the minimum thickness of the bearing oil film between the bearing balls and the bearing races were obtained. Then the bearing breakdown model was established. The electric-thermal coupling simulation of the bearing breakdown was carried out and the temperature rise of the bearing under a certain current excitation was obtained. Finally, based on the melt temperature of the bearing steel, a method for determining the critical current of the bearing electrical corrosion was proposed. © 2020, Electrical Technology Press Co. Ltd. All right reserved.
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页码：4251 / 4257
页数：6
相关论文
共 21 条
  • [1] Fan Biao, Investigation and analysis of the electric corrosion of the traction motor bearing of the A5 type car in Guangzhou metro line 2, Mechanical & Electrical Engineering Technology, 46, 2, pp. 134-138, (2017)
  • [2] Liu Ruifang, Ren Xuejiao, Chen Jiayao, Analysis of bearing currents in doubly-fed induction wind turbines, Transactions of China Electrotechnical Society, 33, 19, pp. 4517-4525, (2018)
  • [3] Liu Ruifang, Chen Jiayao, Ma Xiping, Calculation and measurement of coupling capacitances in AC motors based on bearing currents problem induced by PWM inverters, Transactions of China Electro- technical Society, 29, 1, pp. 60-67, (2014)
  • [4] Song Xiangjin, Wang Zhuo, Hu Jingtao, Et al., Diagnosis of bearing fault in induction motors using Hilbert demodulation approach, Transactions of China Electrotechnical Society, 33, 21, pp. 4941-4948, (2018)
  • [5] Liu Ruifang, Meng Yanting, Ren Xuejiao, Et al., Analysis of bearing currents of the direct-drive permanent magnet synchronous wind generators, Electric Machines and Control, 23, 8, pp. 43-49, (2019)
  • [6] Liu Bo, Ben Hongqi, Bai Yinlong, A slow given method to suppress the start-up inrush current of PWM rectifier, Transactions of China Electro- technical Society, 33, 12, pp. 2758-2766, (2018)
  • [7] (2016)
  • [8] Prashad H., Investigation of damaged rolling-element bearings and deterioration of lubricants under the influence of electric fields, Wear, 176, 2, pp. 151-161, (1994)
  • [9] Zika T, Buschbeck F, Preisinger G, Et al., Current passage through bearings in wind turbine gener- ators, Electric Machines & Control Application, 35, 9, pp. 15-19, (2008)
  • [10] Liu William, The prevalent motor bearing premature failures due to the high frequency electric current passage, Engineering Failure Analysis, 45, 10, pp. 118-127, (2014)
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