Abstract：The bearing voltage and bearing current caused by variable frequency drive system and their negative effect of the bearing electrical erosion have become the main bearing failure modes. The exact mechanism of electrical-erosion failure of rotating motor bearings is unclear, and it is difficult to predict the electric life of bearings effectively. The electrical fault of bearings has become the key problem limiting the reliability of the motor system. This paper mainly summarizes the progress of research on the mechanism and mitigation measures for motor bearings’ electrical erosion damage. Firstly, the source and classification of bearing voltage and current are introduced. The results show that electrical discharge machining (EDM) current and high-frequency circulating bearing current are the main causes of electric-erosion damage and shortening of bearing life. Bearing damage caused by electrical erosion mainly includes frosting, pitting, fluting, white etching cracks (WEC), and lubricating oil degradation. Frosting and pitting damage are early failures with little influence on bearing operation. The appearance of fluting and WEC leads to greater vibration and noise of bearings, and the bearing life decreases sharply. The factors influencing bearing corrosion damage are analyzed, including speed, lubricating oil, power supply excitation, motor structure parameter, temperature, load, etc. According to the current research, with the increase in the speed, the bearing current presents a trend of first increasing and then decreasing. The discharge activity of the bearing is kept at a high value when the motor is started. The variable speed operation is more harmful to the bearing life than the constant speed operation. Power excitation is an important factor affecting bearing breakdown. Both DC and AC power supplies cause breakdown and discharge of bearing. The influence of power switching frequency on bearing discharge behavior is not uniform. In the design phase of the motor, the impact of the motor impedance on bearing voltage should be considered. The bearing voltage can be reduced by adjusting the motor impedance under the typical motor operation. According to the current literature, there are differences in the influence of temperature on bearing discharge activity. Lubricating oil is the premise of rolling bearings' reliable operation. Different types of lubricating oil have different bearing discharge levels under the same working conditions. Therefore, when selecting the bearing lubrication grease, its performance should be considered to reduce the risk of electrical erosion. Load is an important parameter for motor operation. Compared with radial load, axial load may increase the amplitude of EDM current. Bearing discharge activity is more intense when the motor runs in light load conditions for a long time. Bearing electrical models and bearing capacitance calculation methods are analyzed. Compared with analytical methods, bearing capacitance parameters calculated by finite element analysis are closer to the measured values. The current bearing model and capacitance calculation methods must comprehensively consider influencing factors like speed, temperature, and load. Mitigation techniques can be divided into: on the inverter, on the connection, and on the motor. The improved modulation strategy and the new inverter topology eliminate or reduce the amplitude of the common-mode voltage and reduce the bearing current at the source. Other mitigation methods are achieved by increasing the bearing current loop impedance or providing a low-impedance path for the bearing current. The mitigation technology for bearings mainly involves using insulated bearings and conductive grease. However, bearing damage mitigation techniques are only effective for some types of bearing current. Understanding the bearing current mechanism is needed before selecting the appropriate mitigation method. Most mitigation techniques impose increased costs and need to be evaluated. Finally, the possible future research direction of bearing electrical erosion is prospected.
迟连强, 张殿海, 赵俊清, 任自艳, 陈德志. 旋转电机轴承电蚀损伤机理与缓解措施研究进展[J]. 电工技术学报, 2024, 39(20): 6409-6430.
Chi Lianqiang, Zhang Dianhai, Zhao Junqing, Ren Ziyan, Chen Dezhi. Research Progress on the Mechanism and Mitigation Measure of Electrical Corrosion Damage in Rotating Motor Bearings. Transactions of China Electrotechnical Society, 2024, 39(20): 6409-6430.
[1] Zhang Pinjia, Du Yi, Habetler T G, et al.A survey of condition monitoring and protection methods for medium-voltage induction motors[J]. IEEE Transactions on Industry Applications, 2011, 47(1): 34-46. [2] 王芹芹. 交流电机轴电流问题中电容参数计算及轴承破坏度研究[D]. 北京: 北京交通大学, 2021. Wang Qinqin.Research on capacitances calculation and the bearing damage degree in bearing currents of AC motors[D]. Beijing: Beijing Jiaotong University, 2021. [3] Êvo M T A, Alzamora A M, Zaparoli I O, et al. Inverter-induced bearing currents: a thorough study of the cause-and-effect chains[J]. IEEE Industry Appli- cations Magazine, 2023, 29(3): 57-66. [4] Li Yao, Qiu Lin, Zhi Yongjian, et al.An overview of bearing voltages and currents in rail transportation traction motors[J]. Journal of Zhejiang University: Science A, 2023, 24(3): 226-242. [5] He Feng, Xie Guoxin, Luo Jianbin.Electrical bearing failures in electric vehicles[J]. Friction, 2020, 8(1): 4-28. [6] 刘瑞芳, 任雪娇, 陈嘉垚. 双馈异步风力发电机的轴电流分析[J]. 电工技术学报, 2018, 33(19): 4517-4525. Liu Ruifang, Ren Xuejiao, Chen Jiayao.Analysis of bearing currents in doubly-fed induction wind turbines[J]. Transactions of China Electrotechnical Society, 2018, 33(19): 4517-4525. [7] 牛凯, 曾泽祥, 陈天骅, 等. 轴承电蚀机制和防护技术的试验研究进展[J]. 润滑与密封, 2023, 48(1): 179-188. Niu Kai, Zeng Zexiang, Chen Tianhua, et al.Research progress of the mechanism of shaft current corrosion in bearing and the protection technology[J]. Lubrication Engineering, 2023, 48(1): 179-188. [8] Tawfiq K B, Güleç M, Sergeant P.Bearing current and shaft voltage in electrical machines: a comprehensive research review[J]. Machines, 2023, 11(5): 550. [9] Ma Jiaojiao, Xue Yujian, Han Qingkai, et al.Motor bearing damage induced by bearing current: a review[J]. Machines, 2022, 10(12): 1167. [10] Schneider V, Behrendt C, Höltje P, et al.Electrical bearing damage, a problem in the nano- and macro-range[J]. Lubricants, 2022, 10(8): 194. [11] Plazenet T, Boileau T, Caironi C, et al.A comprehensive study on shaft voltages and bearing currents in rotating machines[J]. IEEE Transactions on Industry Applications, 2018, 54(4): 3749-3759. [12] Abu-Rub H, Bayhan S, Moinoddin S, et al.Medium-voltage drives: challenges and existing technology[J]. IEEE Power Electronics Magazine, 2016, 3(2): 29-41. [13] 赵秦聪. 绝缘轴承对变频电机轴电流的抑制机理与效果研究[D]. 北京: 北京交通大学, 2022. Zhao Qincong.Research on the suppression mechanism and effects of insulated bearings on the bearing currents of variable frequency motors[D]. Beijing: Beijing Jiaotong University, 2022. [14] Erdman J M, Kerkman R J, Schlegel D W, et al.Effect of PWM inverters on AC motor bearing currents and shaft voltages[J]. IEEE Transactions on Industry Applications, 1996, 32(2): 250-259. [15] 孙全增, 张志锋. 双三相永磁同步电机低共模电压模型预测电流控制[J]. 电工技术学报, 2023, 38(14): 3708-3722. Sun Quanzeng, Zhang Zhifeng.Low common-mode voltage model predictive current control for dual three-phase permanent magnet synchronous motor[J]. Transactions of China Electrotechnical Society, 2023, 38(14): 3708-3722. [16] 任雪娇, 刘瑞芳. 交流电机高频轴电流集中参数模型与分布参数模型的对比研究[J]. 电工技术学报, 2018, 33(增刊2): 344-351. Ren Xuejiao, Liu Ruifang.Comparative research on the lumped parameter model and the distributed parameter model in high frequency bearing current problem of AC motors[J]. Transactions of China Electrotechnical Society, 2018, 33(S2): 344-351. [17] Muetze A, Binder A.Calculation of motor capacitances for prediction of the voltage across the bearings in machines of inverter-based drive systems[J]. IEEE Transactions on Industry Applications, 2007, 43(3): 665-672. [18] Busse D, Erdman J, Kerkman R J, et al.System electrical parameters and their effects on bearing currents[J]. IEEE Transactions on Industry Applications, 1997, 33(2): 577-584. [19] Wittek E, Kriese M, Tischmacher H, et al.Capacitances and lubricant film thicknesses of motor bearings under different operating conditions[C]//International Conference on Electrical Machines- ICEM, Rome, Italy, 2010: 1-6. [20] Muetze A, Tamminen J, Ahola J.Influence of motor operating parameters on discharge bearing current activity[C]//2010 IEEE Energy Conversion Congress and Exposition, Atlanta, GA, USA, 2010: 2739-2746. [21] Niskanen V, Muetze A, Ahola J.Study on bearing impedance properties at several hundred kilohertz for different electric machine operating parameters[J]. IEEE Transactions on Industry Applications, 2014, 50(5): 3438-3447. [22] Niskanen V.Radio-frequency-based measurement methods for bearing current analysis in induction- motors[D]. Finland: Lappeenranta University of Technology, 2014. [23] Busse D, Erdman J, Kerkman R, et al.Characteristics of shaft voltage and bearing currents[J]. IEEE Industry Applications Magazine, 1997, 3(6): 21-32. [24] Chen Shaotang, Lipo T A.Circulating type motor bearing current in inverter drives[J]. IEEE Industry Applications Magazine, 1998, 4(1): 32-38. [25] Muetze A, Binder A.Calculation of circulating bearing currents in machines of inverter-based drive systems[J]. IEEE Transactions on Industrial Electronics, 2007, 54(2): 932-938. [26] Muetze A, Binder A.Don’t lose your bearings[J]. IEEE Industry Applications Magazine, 2006, 12(4): 22-31. [27] Binder A, Muetze A.Scaling effects of inverter- induced bearing currents in AC machines[J]. IEEE Transactions on Industry Applications, 2008, 44(3): 769-776. [28] 王禹. PWM逆变器驱动感应电机高频轴承电流关键问题研究[D]. 沈阳: 沈阳工业大学, 2015. Wang Yu.Key problems of high frequency bearing currents in variable frequency induction motor fed by PWM inverter[D]. Shenyang: Shenyang University of Technology, 2015. [29] 王亚汉. 城市轨道交通车辆交流牵引电机轴承电蚀预防方法研究[J]. 铁道机车车辆, 2022, 42(6): 150-154. Wang Yahan.Research on corrosion-proof method of AC traction motor bearing for urban rail transit[J]. Railway Locomotive & Car, 2022, 42(6): 150-154. [30] Boyanton H E, Hodges G.Bearing fluting motors[J]. IEEE Industry Applications Magazine, 2002, 8(5): 53-57. [31] Lin C M, Chiou Y C, Lee R T.Pitting mechanism on lubricated surface of Babbitt alloy/bearing steel pair under ac electric field[J]. Wear, 2001, 249(1/2): 132-141. [32] Chiou Y C, Lee R T, Lin C M.Formation criterion and mechanism of electrical pitting on the lubricated surface under AC electric field[J]. Wear, 1999, 236(1/2): 62-72. [33] Lin C M, Chiou Y C, Lee R T.Effect of MoS2 additive on electrical pitting mechanism of lubricated surface for Babbitt alloy/bearing steel pair under ac electric field[J]. Wear, 2004, 257(7/8): 833-842. [34] Prashad H.Appearance of craters on track surface of rolling element bearings by spark erosion[J]. Tribology International, 2001, 34(1): 39-47. [35] Chiou Y C, Lee R T, Lin S M.Formation mechanism of electrical damage on sliding lubricated contacts for steel pair under DC electric field[J]. Wear, 2009, 266(1/2): 110-118. [36] Raadnui S, Kleesuwan S.Electrical pitting wear debris analysis of grease-lubricated rolling element bearings[J]. Wear, 2011, 271(9/10): 1707-1718. [37] Xie Guoxin, Luo Jianbin, Guo Dan, et al.Damages on the lubricated surfaces in bearings under the influence of weak electrical currents[J]. Science China Technological Sciences, 2013, 56(12): 2979-2987. [38] Furtmann A.Elektrische belastung von maschinenele- menten im antriebsstrang[D]. Germany: Leibniz Universität Hannover, 2017. [39] Xie Guoxin, Guo Dan, Luo Jianbin.Lubrication under charged conditions[J]. Tribology International, 2015, 84: 22-35. [40] Zika T, Gebeshuber I C, Buschbeck F, et al.Surface analysis on rolling bearings after exposure to defined electric stress[J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2009, 223(5): 787-797. [41] Didenko T, Pridemore W D.Electrical fluting failure of a tri-lobe roller bearing[J]. Journal of Failure Analysis and Prevention, 2012, 12(5): 575-580. [42] Liu W.The prevalent motor bearing premature failures due to the high frequency electric current passage[J]. Engineering Failure Analysis, 2014, 45: 118-127. [43] Tischmacher H, Gattermann S.Multiple signature analysis for the detection of bearing currents and the assessment of the resulting bearing wear[C]//International Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion, Sorrento, Italy, 2012: 1354-1359. [44] Prashad H.Investigation of damaged rolling-element bearings and deterioration of lubricants under the influence of electric fields[J]. Wear, 1994, 176(2): 151-161. [45] Prashad H.Determination of time span for the appearance of flutes on the track surface of rolling- element bearings under the influence of electric current[J]. Tribology Transactions, 1998, 41(1): 103-109. [46] Prashad H.Theoretical and experimental investigations on the pitch and width of corrugations on the surfaces of ball bearings[J]. Wear, 1991, 143(1): 1-14. [47] Ost W, De Baets P.Failure analysis of the deep groove ball bearings of an electric motor[J]. Engineering Failure Analysis, 2005, 12(5): 772-783. [48] Plazenet T, Boileau T.Overview of bearing white etching cracks due to electrical currents[C]//2021 IEEE 13th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), Dallas, TX, USA, 2021: 440-446. [49] Gould B, Demas N, Erck R, et al.The effect of electrical current on premature failures and microstructural degradation in bearing steel[J]. International Journal of Fatigue, 2021, 145: 106078. [50] Mikami H, Kawamura T.Influence of electrical current on bearing flaking life[C]//SAE Technical Paper Series, 2007: 0113. [51] Loos J, Bergmann I, Goss M.Influence of high electrical currents on WEC formation in rolling bearings[J]. Tribology Transactions, 2021, 64(4): 708-720. [52] Gould B, Greco A, Stadler K, et al.Using advanced tomography techniques to investigate the development of White Etching Cracks in a prematurely failed field bearing[J]. Tribology International, 2017, 116: 362-370. [53] Evans M H.An updated review: white etching cracks (WECs) and axial cracks in wind turbine gearbox bearings[J]. Materials Science and Technology, 2016, 32(11): 1133-1169. [54] Ruellan A, Cavoret J, Ville F, et al.Understanding white etching cracks in rolling element bearings: State of art and multiple driver transposition on a twin-disc machine[J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2017, 231(2): 203-220. [55] Loos J, Bergmann I, Goss M.Influence of currents from electrostatic charges on WEC formation in rolling bearings[J]. Tribology Transactions, 2016, 59(5): 865-875. [56] Romanenko A, Muetze A, Ahola J.Effects of electrostatic discharges on bearing grease dielectric strength and composition[J]. IEEE Transactions on Industry Applications, 2016, 52(6): 4835-4842. [57] Noguchi S, Kakinuma S N, Kanada T.Measurement of direct current voltage causing electrical pitting[J]. Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2010, 4(6): 1084-1094. [58] Muetze A, Binder A, Vogel H, et al.What can bearings bear?[J]. IEEE Industry Applications Magazine, 2006, 12(6): 57-64. [59] Cann P M, Doner J P, Webster M N, et al.Grease degradation in rolling element bearings[J]. Tribology Transactions, 2001, 44(3): 399-404. [60] Yu Zhiqiang, Yang Zhenguo.Fatigue failure analysis of a grease-lubricated roller bearing from an electric motor[J]. Journal of Failure Analysis and Prevention, 2011, 11(2): 158-166. [61] Cann P M.Grease degradation in a bearing simulation device[J]. Tribology International, 2006, 39(12): 1698-1706. [62] Khan K, Gyllensten F.Experimental investigation of bearing currents in low voltage motors[C]//International Conference on Electrical Machines (ICEM), Alexandroupoli, Greece, 2018: 218-224. [63] Schuster M, Springer J, Binder A.Comparison of a 1.1 kW-induction machine and a 1.5 kW-PMSM regarding common-mode bearing currents[C]//2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), Amalfi, Italy, 2018: 1-6. [64] Magdun O, Gemeinder Y, Binder A.Investigation of influence of bearing load and bearing temperature on EDM bearing currents[C]//2010 IEEE Energy Conversion Congress and Exposition, Atlanta, GA, USA, 2010: 2733-2738. [65] Gemeinder Y, Schuster M, Radnai B, et al.Calculation and validation of a bearing impedance model for ball bearings and the influence on EDM-currents[C]//2014 International Conference on Electrical Machines (ICEM), Berlin, Germany, 2014: 1804-1810. [66] Plazenet T, Boileau T, Caironi C, et al.Influencing parameters on discharge bearing currents in inverter-fed induction motors[J]. IEEE Transactions on Energy Conversion, 2021, 36(2): 940-949. [67] Tischmacher H, Gattermann S.Bearing currents in converter operation[C]//International Conference on Electrical Machines-ICEM, Rome, Italy, 2010: 1-8. [68] Romanenko A, Muetze A, Ahola J.Incipient bearing damage monitoring of 940-h variable speed drive system operation[J]. IEEE Transactions on Energy Conversion, 2017, 32(1): 99-110. [69] Cen Hui, Lugt P M, Morales-Espejel G.On the film thickness of grease-lubricated contacts at low speeds[J]. Tribology Transactions, 2014, 57(4): 668-678. [70] Noguchi S, Fukuda E, Kanada T.Effect of oil film parameter on vibration acceleration and electrical pitting of small ball bearing[J]. Tribology Online, 2012, 7(1): 33-40. [71] Jagenbrein A, Buschbeck F, Gröschl M, et al.Investigation of the physical mechanisms in rolling bearings during the passage of electric current[J]. Tribotest, 2005, 11(4): 295-306. [72] Sunahara K, Ishida Y, Yamashita S, et al.Preliminary measurements of electrical micropitting in grease- lubricated point contacts[J]. Tribology Transactions, 2011, 54(5): 730-735. [73] Beroual A, Khaled U, Mbolo Noah P, et al.Comparative study of breakdown voltage of mineral, synthetic and natural oils and based mineral oil mixtures under AC and DC voltages[J]. Energies, 2017, 10(4): 511. [74] Romanenko A, Ahola J, Muetze A.Influence of electric discharge activity on bearing lubricating grease degradation[C]//2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada, 2015: 4851-4852. [75] Zheng Jingnan, Xiang Dawei, Li Hao, et al.An investigation into the effect of bearing grease degradation on the high-frequency dv/dt bearing current in an Inverter-fed motor system[C]//2021 6th International Conference on Power and Renewable Energy (ICPRE), Shanghai, China, 2021: 543-547. [76] Joshi A, Blennow J.Investigation of the static breakdown voltage of the lubricating film in a mechanical ball bearing[C]//Proceeding of the 23rd Nordic Insulation Symposium, 2018: 23. [77] Bhattacharya S, Resta L, Divan D M, et al.Experimental comparison of motor bearing currents with PWM hard- and soft-switched voltage-source inverters[J]. IEEE Transactions on Power Electronics, 1999, 14(3): 552-562. [78] Xu Yipu, Liang Yan, Yuan Xibo, et al.Experimental assessment of high frequency bearing currents in an induction motor driven by a SiC inverter[J]. IEEE Access, 2021, 9: 40540-40549. [79] Smolenski R, Kempski A, Bojarski J.Statistical approach to discharge bearing currents[J]. COMPEL- the International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 2010, 29(3): 647-666. [80] Reddy S, Basavaraja B.Simulation and analysis of common mode voltage, bearing voltage and bearing current in two-level and three-level PWM inverter fed induction motor drive with long cable[C]//2015 International Conference on Power and Advanced Control Engineering (ICPACE), Bengaluru, India, 2015: 221-226. [81] Chandrashekar S M, Ramachandran A, Reddy M C.Simulation and experimental measurement of shaft voltage, bearing current in induction motor drive[C]//2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering (ICPCSI), Chennai, India, 2017: 732-737. [82] Collin R, Yokochi A, von Jouanne A. Novel characterization of Si- and SiC-based PWM inverter bearing currents using probability density functions[C]//2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021: 5146-5153. [83] Zhao Fangwei, Wang Xiuhe, Zhao Wenliang, et al.Optimization analysis of inherent shaft voltage in line-start permanent magnet synchronous motor[C]//2020 IEEE 19th Biennial Conference on Electro- magnetic Field Computation (CEFC), Pisa, Italy, 2020: 1-4. [84] Muetze A, de Gersem H, Weiland T. Influence of teeth and cooling ducts on the high-frequency common mode flux of inverter-fed AC machines[C]//Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, Hong Kong, China, 2005: 1350-1356. [85] 贾磊, 刘瑞芳, 李知浩, 等. 永磁同步风力发电机高频共模电流谐波分布及幅值影响因素研究[J]. 电工技术学报, 2023, 38(增刊1): 101-113. Jia Lei, Liu Ruifang, Li Zhihao, et al.Study on the influence factors of harmonic distribution and amplitude of common-mode current of permanent magnet synchronous wind turbines[J]. Transactions of China Electrotechnical Society, 2023, 38(S1): 101-113. [86] 李伟, 程明, 朱洒. 磁通切换永磁电机固有轴电压分析[J]. 电工技术学报, 2017, 32(15): 1-9. Li Wei, Cheng Ming, Zhu Sa.Analysis of inherent shaft voltage in flux-switching permanent magnet machine[J]. Transactions of China Electrotechnical Society, 2017, 32(15): 1-9. [87] 赵方伟, 王秀和, 赵文良, 等. 内置式永磁同步电机动态偏心故障下的轴电压解析分析和削弱[J]. 电工技术学报, 2022, 37(4): 837-848. Zhao Fangwei, Wang Xiuhe, Zhao Wenliang, et al.Analysis and reduction of shaft voltage in interior permanent magnet synchronous motors under dynamic eccentricity fault[J]. Transactions of China Electrotechnical Society, 2022, 37(4): 837-848. [88] 陈立珂, 刘瑞芳, 李知浩, 等. 电缆参数对变频驱动电机轴电压和轴电流的影响[J]. 电工技术学报, 2024, 39(15): 4755-4766, 4793. Chen Like, Liu Ruifang, Li Zhihao, et al.The influence of cable parameters on the bearing voltage and bearing current of the variable frequency drive motor[J]. Transactions of China Electrotechnical Society, 2024, 39(15): 4755-4766, 4793. [89] 李剑立, 武玉才, 卢伟甫. 水轮发电机机电故障的轴电压特征分析及诊断[J]. 电机与控制学报, 2023, 27(9): 10-18. Li Jianli, Wu Yucai, Lu Weifu.Shaft voltage characteristics analysis and diagnosis of hydro- generator electromechanical faults[J]. Electric Machines and Control, 2023, 27(9): 10-18. [90] Kriese M, Wittek E, Gattermann S, et al.Prediction of motor bearing currents for converter operation[C]//International Conference on Electrical Machines- ICEM, Rome, Italy, 2010: 1-6. [91] Gonda A, Capan R, Bechev D, et al.The influence of lubricant conductivity on bearing currents in the case of rolling bearing greases[J]. Lubricants, 2019, 7(12): 108. [92] 闻俊夫, 钟祥鸣, 王雷, 等. 电机轴承油膜击穿电压阈值的计算及测试[J/OL]. 轴承: 1-8 [2023-09-10]. http://kns.cnki.net/kcms/detail/41.1148.th.20230327.1520.004.html. Wen Junfu, Zhong Xiangming, Wang Lei, et al. Calculation and test of the breakdown voltage threshold of the motor bearing oil film[J/OL]. Bearing, 1-8 [2023-09-10]. http://kns.cnki.net/kcms/detail/41.1148.th.20230327.1520.004.html. [93] Busse D, Erdman J, Kerkman R J, et al.The effects of PWM voltage source inverters on the mechanical performance of rolling bearings[C]//Proceedings of Applied Power Electronics Conference, San Jose, CA, USA, 2002: 561-569. [94] Harder A, Zaiat A, Becker-Dombrowsky F M, et al. Investigation of the voltage-induced damage progression on the raceway surfaces of thrust ball bearings[J]. Machines, 2022, 10(10): 832. [95] 任雪娇, 刘瑞芳, 王芹芹. 轴电流问题中轴承模型的探究及等效电阻计算[J]. 电气工程学报, 2019, 14(2): 1-6. Ren Xuejiao, Liu Ruifang, Wang Qinqin.Research on bearing model of bearing current analysis and calculation of equivalent resistance[J]. Journal of Electrical Engineering, 2019, 14(2): 1-6. [96] 刘瑞芳, 桑秉谦, 李伟力. 交流电机轴承电容的计算与测量[J]. 中国电机工程学报, 2017, 37(10): 2986-2993. Liu Ruifang, Sang Bingqian, Li Weili.Calculations and measurements of bearing capacitance in AC motor bearings[J]. Proceedings of the CSEE, 2017, 37(10): 2986-2993. [97] Jun J H, Lee C K, Kwon B I.The analysis of bearing current using common mode equivalent circuit parameters by FEM[C]//2005 International Conference on Electrical Machines and Systems, Nanjing, China, 2006: 49-51. [98] Zhu Wenjun, De Gaetano D, Chen Xiao, et al.A review of modeling and mitigation techniques for bearing currents in electrical machines with variable-frequency drives[J]. IEEE Access, 2022, 10: 125279-125297. [99] 王芹芹, 刘瑞芳, 任雪娇. 基于多物理场分析的电机轴承放电击穿[J]. 电工技术学报, 2020, 35(20): 4251-4257. Wang Qinqin, Liu Ruifang, Ren Xuejiao.The motor bearing discharge breakdown based on the multi- physics field analysis[J]. Transactions of China Electrotechnical Society, 2020, 35(20): 4251-4257. [100] Jouanne A V, Collin R, Stephens M, et al.Development of inverter duty motor bearings for Si and SiC-based variable frequency drive applications including advanced 4D finite element modeling[C]//2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021: 5154-5161. [101] Busse D F, Erdman J M, Kerkman R J, et al.An evaluation of the electrostatic shielded induction motor: a solution for rotor shaft voltage buildup and bearing current[J]. IEEE Transactions on Industry Applications, 1997, 33(6): 1563-1570. [102] Muetze A, Oh H W.Current-carrying characteristics of conductive microfiber electrical contact for high frequencies and current amplitudes: theory and applications[J]. IEEE Transactions on Power Electronics, 2010, 25(8): 2082-2092. [103] Yea M, Han K J.Modified slot opening for reducing shaft-to-frame voltage of AC motors[J]. Energies, 2020, 13(3): 760. [104] Park J K, Rhyu S H, Hur J.Shaft-to-frame voltage mitigation method by changing winding-to-rotor parasitic capacitance of IPMSM[C]//2017 IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, OH, USA, 2017: 3571-3576. [105] Vostrov K, Pyrhönen J, Niemelä M, et al.Mitigating noncirculating bearing currents by a correct stator magnetic circuit and winding design[J]. IEEE Transactions on Industrial Electronics, 2021, 68(5): 3805-3812. [106] Ammann C, Reichert K, Joho R, et al.Shaft voltages in generators with static excitation systems- problems and solution[J]. IEEE Transactions on Energy Conversion, 1988, 3(2): 409-419. [107] Bai Baodong, Wang Yu, Wang Xiaochuan.Suppression for discharging bearing current in variable-frequency motors based on electromagnetic shielding slot wedge[J]. IEEE Transactions on Magnetics, 2015, 51(11): 8109404. [108] Vostrov K, Pyrhönen J, Niemelä M, et al.On the application of extended grounded slot electrodes to reduce noncirculating bearing currents[J]. IEEE Transactions on Industrial Electronics, 2023, 70(3): 2286-2295. [109] von Jauanne A, Zhang Haoran. A dual-bridge inverter approach to eliminating common-mode voltages and bearing and leakage currents[J]. IEEE Transactions on Power Electronics, 1999, 14(1): 43-48. [110] Julian A L, Oriti G, Lipo T A.Elimination of common-mode voltage in three-phase sinusoidal power converters[J]. IEEE Transactions on Power Electronics, 1999, 14(5): 982-989. [111] Sunitha P M, Banakara B, Reddy S.Modeling, simulation and analysis of common mode voltage, bearing voltage and bearing current in PWM multilevel inverter fed induction motor with long cable[C]//2017 2nd IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT), Bangalore, India, 2017: 1161-1167. [112] Ratnayake K R M N, Murai Y. A novel PWM scheme to eliminate common-mode voltage in three-level voltage source inverter[C]//29th Annual IEEE Power Electronics Specialists Conference, Fukuoka, Japan, 1998: 269-274. [113] 鲁紫荆, 李珊瑚, 操孙鹏, 等. 一种大幅度减小间接矩阵变换器高频共模电压的调制策略[J]. 电工技术学报, 2023, 38(16): 4366-4375. Lu Zijing, Li Shanhu, Cao Sunpeng, et al.A modulation strategy for simultaneously reducing high-frequency common-mode voltage of indirect matrix converter[J]. Transactions of China Elec- trotechnical Society, 2023, 38(16): 4366-4375. [114] 戴鹏, 吴斌, 苏良成, 等. 基于新型SVPWM的NPC/H桥五电平逆变器共模电压抑制策略研究[J]. 电机与控制学报, 2015, 19(2): 20-25. Dai Peng, Wu Bin, Su Liangcheng, et al.Reducing common-mode voltage for NPC/H-bridge five-level inverter based on novel SVPWM strategy[J]. Electric Machines and Control, 2015, 19(2): 20-25. [115] Muetze A, Binder A.Experimental evaluation of mitigation techniques for bearing currents in inverter-supplied drive-systems-investigations on induction motors up to 500 kW[C]//IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03, Madison, WI, USA, 2003: 1859-1865. [116] 刘瑞芳, 陈嘉垚, 朱健, 等. 轴承绝缘对双馈异步发电机高频轴电压和轴电流抑制效果研究[J]. 电工技术学报, 2020, 35(增刊1): 212-219. Liu Ruifang, Chen Jiayao, Zhu Jian, et al.Analysis of high frequency bearing voltage and bearing current suppression of doubly fed induction generators based on bearings insulation[J]. Transactions of China Electro- technical Society, 2020, 35(S1): 212-219. [117] 李伟, 王永强, 李继伟. 牵引电机轴承电蚀及绝缘性能优化方案[J]. 轴承, 2023(4): 26-31. Li Wei, Wang Yongqiang, Li Jiwei.Optimization scheme for electric erosion and insulation performance of traction motor bearings[J]. Bearing, 2023(4): 26-31. [118] 李伟, 石永进, 王永强, 等. 地铁牵引电机轴承电蚀及绝缘性能优化技术研究[J/OL]. 轴承: 1-8 [2023-09-11]. http://kns.cnki.net/kcms/detail/41.1148.TH.20220922.1717.002.html. Li Wei, Shi Yongjin, Wang Yongqiang, et al. Research on electric erosion and insulation performance optimization of metro traction motor bearings[J/OL]. Bearing: 1-8 [2023-09-11]. http://kns.cnki.net/kcms/detail/41.1148.TH.20220922.1717.002.html. [119] Huan Jie, Li Songhua, Xia Zhongxian, et al.Experimental study on electric corrosion damage of bearing and solution[J]. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2022, 236(19): 10349-10358. [120] 李知浩, 刘瑞芳, 张亮亮, 等. 绝缘轴承对变频电机高频轴电流的抑制机理与效果研究[J]. 电工技术学报, 2024,39(4): 1046-1058. Li Zhihao, Liu Ruifang, Zhang Liangliang, et al.Study on suppression mechanism and effect of insulated bearing on high-frequency shaft current of frequency conversion motor[J]. Transactions of China Elec- trotechnical Society, 2024,39(4): 1046-1058. [121] 张斌, 方俊, 官磊, 等. 电蚀缺陷轴承延寿试验及延寿机理分析[J/OL]. 轴承: 1-5 [2023-09-10]. http://kns.cnki.net/kcms/detail/41.1148.TH.20230511.0946.004.html. Zhang Bin, Fang Jun, Guan Lei, et al. Life- prolonging test and mechanism analysis research on bearings with electric erosion defects[J/OL]. Bearing, 1-5 [2023-09-10]. http://kns.cnki.net/kcms/detail/41.1148.TH.20230511.0946.004.html. [122] 石鸿佼. 导电油脂对轴承电压影响的研究[J]. 防爆电机, 2023, 58(2): 45-51. Shi Hongjiao.Influence research of conductive grease on bearing voltage[J]. Explosion-Proof Electric Machine, 2023, 58(2): 45-51. [123] Suzumura J.Prevention of electrical pitting on rolling bearings by electrically conductive grease[J]. Quarterly Report of RTRI, 2016, 57(1): 42-47. [124] Tischmacher H, Gattermann S.Investigations on bearing currents in converter-fed electrical motors[C]//International Conference on Electrical Machines, Marseille, France, 2012: 1764-1770. [125] 暴杰, 许重斌, 赵慧超. 驱动电机轴承电蚀失效问题研究[J]. 微特电机, 2022, 50(9): 58-64. Bao Jie, Xu Chongbin, Zhao Huichao.Research on electric corrosion failure of drive motor bearing[J]. Small & Special Electrical Machines, 2022, 50(9): 58-64.
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