Electrical Aging Law of Winding Insulation for Pulse Width Modulation Inverter-Fed Traction Motor

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Electrical Aging Law of Winding Insulation for Pulse Width Modulation Inverter-Fed Traction Motor

更新时间：2025-07-09

- Electrical Aging Law of Winding Insulation for Pulse Width Modulation Inverter-Fed Traction Motor
- Vol. 46, Issue 12, Pages: 74-77(2012)
- 作者机构：
  
  西安交通大学电气绝缘研究中心,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM835
- Published：2012
- 稿件说明：
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Electrical Aging Law of Winding Insulation for Pulse Width Modulation Inverter-Fed Traction Motor[J]. 2012, 46(12): 74-77.
DOI：

Electrical Aging Law of Winding Insulation for Pulse Width Modulation Inverter-Fed Traction Motor[J]. 2012, 46(12): 74-77. DOI：

摘要

为了解决大量变频电机线圈绝缘过早损坏的问题

采用变频牵引电机线圈作为试样

施加高压脉冲方波电压进行电老化试验

研究脉冲电源的电压幅值、脉冲频率、温度对变频牵引电机线圈试样寿命的影响规律.试验结果表明:电机线圈寿命随电压幅值和温度的增加成指数性衰减

而在13～20 kHz范围内

试样寿命与频率成负线性关系; 在老化条件相同时

同批次试样的寿命差距较大; 试样击穿点几乎都发生在电磁线的弯曲部分和铜线棱角处.

Abstract

Aiming at a large number of premature failures of wingding insulation of PWM inverter-fed AC traction motor

the inverter-fed AC traction motor wingding is taken as a sample

and square-wave high-voltage pulse is imposed to carry out electric aging test. The influences of pulse supply voltage

pulse frequency

and temperature on the life of traction motor wingding sample are investigated. It is shown that thewingding life decays exponentially with the increasing voltage and temperature. Within frequency range form 13 kHz to 20 kHz

the relation between winding life and frequency gets negatively linear. Under the same aging conditions

the winding life in the same batch can be quite different. The almost all winding sample breakdowns occur in the electromagnetic wire's bent portion and copper corner.

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references

YIN Weijun. Failure mechanism of winding insulations in inverter-fed motors[J]. IEEE Electrical Insulation Magazine, 1997, 13(6):18-23.

CENTURIONI L, GUASTAVINO F, CERUTTI B, et al. An experimental optimization of preliminary tests on enameled-copper wires adopted for motor windings of PWM controlled solid state drives[C]∥Power Engineering Society Summer Meeting. Piscataway, NJ, USA: IEEE,2000:2449-2452.

KAUFHOLD M, SCHAFER K, BAUER K, et al. Interface phenomena in stator winding insulation:challenges in design, diagnosis, and service experience[J]. IEEE Electrical Insulation Magazine, 2002,18(2): 27-36.

FABIANI D, MONTANARI G C, CONTIN A. Aging acceleration of insulating materials for electrical machine windings supplied by PWM in the presence and in the absence of partial discharges[C]∥Proceedings of the 2001 IEEE 7th International Conference on Solid Dielectrics. Piscataway, NJ, USA: IEEE, 2001: 283-286.

邱昌荣,曹晓珑. 电气绝缘测试技术[M]. 北京:机械工业出版社,2001:229.

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