Influence of motor cable on common-mode currents in an inverter-fed motor drive system

Peng-kang XIE; Jia-zheng LU; Guo-zhu CHEN; Heng-lin CHEN

doi:10.1631/FITEE.1601518

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Influence of motor cable on common-mode currents in an inverter-fed motor drive system

Regular Papers | Updated：2022-05-19

- Influence of motor cable on common-mode currents in an inverter-fed motor drive system
- 变频电机驱动系统中电缆对共模电流影响研究
- Frontiers of Information Technology & Electronic Engineering Vol. 19, Issue 2, Pages: 273-284(2018)
- Affiliations：
  
  College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
  State Key Laboratory of Disaster Prevention & Reduction for Power Grid Transmission and Distribution Equipment, State Grid Hunan Electric Power Corporation Disaster Prevention & Reduction Center, Changsha 410007, China
- Author bio：
  
  Heng-lin CHEN, E-mail: henglin@zju.edu.cn
- Funds：
- DOI：10.1631/FITEE.1601518
  CLC： TM12
- Received：03 September 2016，
  
  Revised：2018-;2-15，
  
  Published：2018-02
- Accepted：
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Peng-kang XIE, Jia-zheng LU, Guo-zhu CHEN, et al. Influence of motor cable on common-mode currents in an inverter-fed motor drive system[J]. Frontiers of Information Technology & Electronic Engineering, 2018, 19(2): 273-284.
DOI：

Peng-kang XIE, Jia-zheng LU, Guo-zhu CHEN, et al. Influence of motor cable on common-mode currents in an inverter-fed motor drive system[J]. Frontiers of Information Technology & Electronic Engineering, 2018, 19(2): 273-284. DOI： 10.1631/FITEE.1601518.

摘要

由电缆连接的感应电动机驱动系统广泛应用于工业应用领域。然而，功率器件的高频开关在操作过程中会产生共模电压，从而导致电机驱动系统中出现严重的共模电流。在驱动系统中通过电缆和电机的共模电流可以引起周围电子设备的电磁干扰，缩短感应电动机的寿命。因此，有必要对电机驱动系统中的共模电流进行分析。本文建立了无屏蔽和屏蔽电缆的高频模型，考虑了电缆的频率相关效应和互感效应。采用有限元法提取电力电缆参数，并进行验证。介绍了异步电动机和逆变器的高频模型，得到电机和逆变器端子上的共模电流，分析了电缆长度和电缆类型对共模电流的影响。实验结果与模型预测的共模电流有较好一致性。

Abstract

Induction motor drive systems fed by cables are widely used in industrial applications. However

high-frequency switching of power devices will cause common-mode (CM) voltages during operation

leading to serious CM currents in the motor drive systems. CM currents through the cables and motors in the drive systems can cause electromagnetic interference (EMI) with the surrounding electronic equipment and shorten the life of induction motors. Therefore

it is necessary to analyze the CM currents in motor drive systems. In this paper

high-frequency models of unshielded and shielded power cables are formulated. The frequency-dependent effects and mutual inductances of the cables are taken into account. The power cable parameters are extracted by the finite element method and validated by measurements. High-frequency models of induction motors and inverters are introduced from existing works. The CM currents at the motor and inverter terminals are obtained

and the influence of the cable length and cable type on the CM currents is analyzed. There is a good agreement between the experimental results and the CM currents predicted by the proposed models.

关键词

Keywords

references

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