基于电磁屏蔽法变频电机轴承电流抑制研究

摘要
图/表
参考文献
相关文章 (5)

全文: PDF (2353 KB)
输出: BibTeX | EndNote (RIS)

摘要针对两种轴承电流抑制措施进行了效能分析,一种为在电机内安装电磁屏蔽槽楔,另一种为在电机轴端安装轴承电流短路环。回顾了电磁屏蔽槽楔的工作原理,通过有限元法计算了电磁屏蔽槽楔对高频电磁场的屏蔽效能;介绍了轴承电流短路环的工作原理。最后以一台3 kW、4极变频电机为研究对象,搭建了实验平台,分别测量了两种轴承电流抑制措施下电机轴承电流,通过实验测量分析了两种轴承电流抑制方法的效能。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	白保东
	王禹
	陈志雪
	王晓川

关键词 ：轴承电压, 轴承电流, 电磁屏蔽, 抑制效能

Abstract：Two methods to suppress the bearing current, i.e. the electromagnetic shield slot wedge within the machine and the bearing current short circuit ring, are analyzed. The theory of the electromagnetic shield slot wedge is reviewed. And the element finite model is established to evaluate the shield effectiveness for high frequency electromagnetic field. The theory of the bearing current short circuit ring is introduced. Finally, the experimental platform is set up to evaluate the shield effectiveness. The test motor is a 3 kW/4-pole variable frequency motor. The bearing currents of the motor with the electromagnetic shield slot wedge and the bearing current short circuit ring are measured respectively. According to the experiment results, the suppression effectiveness is evaluated.

Key words： Bearing voltage bearing currents electromagnetic shielding suppression effectiveness

收稿日期: 2015-09-13 出版日期: 2016-04-20

PACS:

TM34

基金资助:国家自然科学基金资助项目(51577122)。

作者简介: 白保东男,1955年生,教授,博士生导师,研究方向为特种电机及其控制和大型电力变压器直流偏磁。E-mail:baibd@sut.edu.cn;王禹男,1987年生,博士研究生,研究方向为永磁电机控制和电机运行中的电磁兼容。E-mail:electricalwangyu@163.com(通信作者)

引用本文:

白保东, 王禹, 陈志雪, 王晓川. 基于电磁屏蔽法变频电机轴承电流抑制研究[J]. 电工技术学报, 2016, 31(7): 33-39. Bai Baodong, Wang Yu, Chen Zhixue, Wang Xiaochuan. Inhibition of Bearing Currents in Frequency Variable Motor Based on Electromagnetic Shielding. Transactions of China Electrotechnical Society, 2016, 31(7): 33-39.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I7/33

[1] Chen S,Lipo T A,Fitzgerald D.Source of induction motor bearing currents caused by PWM inverters[J].IEEE Transactions on Energy Conversion,1996,11(1):25-32.
[2] 程启明,程尹曼,王映斐,等.交流电机控制策略的发展综述[J].电力系统保护与控制,2015,39(9):145-154.
Cheng Qiming,Cheng Yiman,Wang Yingfei,et al.Overview of control strategies for AC motor[J].Power System Protection and Control,2015,39(9):145-154.
[3] 丁奇,严东超,曹启蒙.三相电压型PWM 整流器控制系统设计方法的研究[J].电力系统保护与控制,2009,37(23):84-99.
Ding Qi,Yan Dongchao,Cao Qimeng.Research on design method of control system for three-phase voltage source PWM rectifier[J].Power System Protection and Control,2009,37(23):84-99.
[4] 郭清滔,吴田.小电流接地系统故障选线方法综述[J].电力系统保护与控制,2010,38(2):146-152.
Guo Qingtao,Wu Tian.Survey of the methods to select fault line in neutral point ineffectively grounded power system[J].Power System Protection and Control,2010,38(2):146-152.
[5] Mohammed O A,Rosales A,Sarikhani A.Evaluation of radiated electromagnetic field interference due to frequency switching in PWM motor drives by 3D finite elements[J].IEEE Transactions on Magnetics,2011,47(5):1474-1477.
[6] 姜艳姝,刘宇,徐殿国,等.PWM 变频器输出共模电压及其抑制技术的研究[J].中国电机工程学报,2005,25(9):47-53.
Jiang Yanshu,Liu Yu,Xu Dianguo,et al.Research on ccommon-mode voltage generated by a PWM inverter and its cancellation technology[J].Proceedings of the CSEE,2005,25(9):47-53.
[7] 钟玉林,赵争鸣.改进式 SHEPWM 对三电平变频器系统的共模电压和轴电压的抑制作用[J].电工技术学报,2009,24(6):48-55.
Zhong Yulin,Zhao Zhengming.Common mode voltage and shaft voltage suppression on a three level NPC inverter system applying improved SHEPWM[J].Transactions of China Electrotechnical Society,2009,24(6):48-55.
[8] 钟玉林,赵争鸣,袁立强.逆变器驱动电机的共模电压和轴电压的抑制[J].清华大学学报(自然科学版),2009,49(1):25-28.
Zhong Yulin,Zhao Zhengming,Yuan Liqiang.Suppression of common-mode and shaft voltages in inverter-driven induction motor[J].Journal of Tsinghua University (Science and Technology),2009,49(1):25-28.
[9] Muetze A,Oh W H.Application of static charge dissipation to mitigate electric discharge bearing currents[J].IEEE Transactions on Industry Applications,2008,44(1):135-143.
[10]Busse D F,Erdman J M,Kerkman R J,et al.An evaluation of the eleetrostatic shielded induction motor:a solution for rotor shaft voltage build up and bearing current[J].IEEE Transactions on Industry Applications,1997,33(6):1563-1570.
[11]Bai Baodong,Wang Yu,Wang Xiaochuan.Suppression for discharging bearing current in variable-frequency motors based on electromagnetic shield slot wedge[J].IEEE Transactions on Magnetics,2015,51(6):1-4.
[12]白保东,刘威峰,王禹,等.PWM 驱动感应电机轴电压轴承电流[J].电工技术学报,2013,28(增2):434-440.
Bai Baodong,Liu Weifeng,Wang Yu,et al.Research on shaft voltage and bearing current of induction motor driven by PWM inverte[J].Transactions of China Electrotechnical Society,2013,28(S2):434-440.
[13]王禹,白保东,刘威峰,等.分布参数共模等效电路关键参数确定及轴承电流计算[J].电工技术学报,2014,29(增1):124-131.
Wang Yu,Bai Baodong,Liu Weifeng,et al.Determination of key parameters in distribution parameters common mode equivalent circuit and calculation of the bearing currents[J].Transactions of China Electrotechnical Society,2014,29 (S1):124-131.
[14]王禹,白保东,刘威峰,等.频域寄生电容法变频电机 Hertz 轴承电流密度计算[J].电工技术学报,2015,30(2):189-195.
Wang Yu,Bai Baodong,Liu Weifeng,et al.Hertz bearing current density calculation of variable frequency driven motors by frequency domain parasitic capacitance method[J].Transactions of China Electrotechnical Society,2015,30(2):189-195.
[15]刘瑞芳,陈嘉垚,马喜平.基于PWM逆变器供电轴电流问题的交流电机耦合电容的计算与测量[J].电工技术学报,2014,29(1):60-67.
Liu Ruifang,Chen Jiayao,Ma Xiping.Measurement of coupling capacitances in AC motors based on bearing currents problem induced by PWM inverters[J].Transactions of China Electrotechnical Society,2014,29(1):60-67.
[16]刘瑞芳,娄卓夫,马喜平.电机轴电流问题中轴承等效电容和电阻的计算模型[J].中国电机工程学报,2014,34(15):1-8.
Liu Ruifang,Lou Zhuofu,Ma Xiping.Modeling of bearing capacitance and resistance in motor bearing current problems[J].Proceedings of the CSEE,2014,34(15):1-8.