驱动电机轴承电蚀失效问题研究

微特电机 ›› 2022, Vol. 50 ›› Issue (9): 58-64.

驱动电机轴承电蚀失效问题研究

暴杰, 许重斌, 赵慧超

中国第一汽车股份有限公司,长春 130000

收稿日期:2022-05-09 出版日期:2022-09-28 发布日期:2022-10-09
作者简介:暴杰(1985—), 高级工程师,主要研究方向为电驱动系统设计。许重斌(1994—), 工学硕士,主要研究方向为电驱动系统设计。赵慧超(1975—),高级工程师,主要研究方向为新能源汽车三电产品开发。

Research on Electric Corrosion Failure of Drive Motor Bearing

BAO Jie, XU Chongbin, ZHAO Huichao

China First Automobile Co., Ltd.,Changchun 130000,China

Received:2022-05-09 Online:2022-09-28 Published:2022-10-09

摘要/Abstract

摘要： 轴承电腐蚀是新能源驱动电机面临的不可避免的共性问题,从轴承电蚀的失效模式进行分析。根据轴承电蚀的失效机理,分析原因失效主要是由传统三相电源供电的电机轴承电流磁路的不平衡和不对称引起。通过限制轴电压的升高和定向引导轴电流流通路径,可以达到减小或消除轴电流引起的损伤的目的。

关键词: 驱动电机, 轴承, 电腐蚀, 应对策略

Abstract: Bearing electric corrosion is an inevitable common problem faced by new energy driven motors.The failure mode of bearing electric corrosion was analyzed. According to the failure mechanism of bearing electric corrosion,the failure reason of bearing electric corrosion is mainly caused by the imbalance and asymmetry of motor magnetic circuit, which is powered by traditional three-phase power supply. By limiting the rise of shaft voltage and guiding the flow path of shaft current, the damage caused by shaft current can be reduced or eliminated.

Key words: drive motor, bearing, electric corrosion, coping strategies

中图分类号:

TM307+.1

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.

参考文献

[1] MÜTZE A.Bearing currents in inverter fed AC-motors[D].Technische Universität Darmstadt,2004.
[2] 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.
[3] MUETZE A,BINDER A.Practical rules for assessment of inverter-induced bearing currents in inverter-fed AC motors up to 500 kW[J].IEEE Transactions on Industrial Electronics,2007,54(3):1614-1622.
[4] SCHUSTER M ,BINDER A.Comparison of different inverter-fed AC motor types regarding common-mode bearing currents[C]//IEEE Energy Conversion Congress and Exposition (ECCE),2015:2762-2768.
[5] DHATRAK R K,NEMA R K,DASH S K,et al.Mitigation of bearing current and shaft voltage using five level inverter in three phase induction motor drive with SPWM technique[C]//International Conference on Industrial Instrumentation and Control (ICIC),2015.
[6] WANG F.Motor shaft voltages and bearing currents and their reduction in multilevel medium-voltage PWM voltage-source-inverter drive applications[J].IEEE Transactions on Industry Applications,2000,36(5):1336-1341.
[7] GAMBICA/REMA Working Group.Motor shaft voltages and bearing current[EB/OL].[2022-01-01].https://www.docin.com/p-90872746.html.
[8] 姜久春,周新宇,张维戈. 一种减小三相PWM变流器共模电压的调制方法:CN103199728A[P]. 2013-07-10.
[9] 郑丽娜.PWM驱动电机系统共模电压抑制的分析与研究[D].北京:北京交通大学,2018.
[10] 才家钢,王勇.电机轴承应用技术[M].北京:机械工业出版社,2020.
[11] Schaeffler Technologies AG & Co KG.Current-Insulating Bearings[EB/OL].[2022-01-01].https://www.schaeffler.com/remotemedien/media/_shared_media/08_media_library/01_publications/schaeffler_2/tpi/downloads_8/tpi_206_de_en.pdf.
[12] 周国玉,周佩荣.消除电机轴电流的几种方法[J].电机技术,2013(5):45-47.
[13] Elctro Static Technology. AEGIS中文手册[EB/OL]. [2022-01-01].https://www.docin.com/p-1513189924.html.
[14] Elctro Static Technology. AEGIS® SGR | Motor Grounding Ring[EB/OL]. [2022-01-01].https://www.est-aegis.com/SGR.php.
[15] GRAVES S M, SILVA R D A, GRENDAHL T N, et al. Electric motor rotor discharge protection: US201715827363[P]. 2017-11-30.
[16] 魏志奇,曹超,吕浪,等.电机转子、电机及车辆:CN112701824A[P]. 2021-04-23.