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Impact of Impulse Voltage Frequency on Partial Discharge Characteristic of Electric Vehicles Motor Insulation
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Jin ZHOU1, Peng WANG2, Shijin MA2
Insulating Materials | 2021, 54(7) : 88 - 94
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Insulating Materials | 2021, 54(7): 88-94
• Insulation Technology •
Impact of Impulse Voltage Frequency on Partial Discharge Characteristic of Electric Vehicles Motor Insulation
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Jin ZHOU1, Peng WANG2, Shijin MA2
Affiliations
  • 1Dongfang Electric Machinery Co., Ltd., Deyang 618000, China
  • 2College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Published: 2021-07-20 doi: 10.16790/j.cnki.1009-9239.im.2021.07.013
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A detection platform of insulation partial discharge (PD) under pulse voltage was constructed by using electromagnetic detection method with the help of a high-voltage pulse power source with adjustable voltage parameters of repetitive pulse. The influence law of frequency variation of repetitive square wave voltage on the PD statistical characteristics of single point and multipoint interturn insulation discharge model for inverter-fed motor was studied. The results show that with the increase of frequency, the amplitude of both insulation single point and multipoint discharge decrease significantly. This may be caused by composite factors such as the change of residual charge distribution on insulation surface, the increase of the excitation probability of initial electron, and the increase of surface temperature after discharge. According to the research results, the influence of square wave pulse voltage frequency on the PD pulse should be carefully considered in the PD detection of motor insulation, and the appropriate voltage frequency should be selected to improve the sensitivity and test accuracy.

variable frequency motor  /  interturn insulation  /  partial discharge  /  repetitive square wave  /  frequency
Jin ZHOU, Peng WANG, Shijin MA. Impact of Impulse Voltage Frequency on Partial Discharge Characteristic of Electric Vehicles Motor Insulation[J]. Insulating Materials, 2021 , 54 (7) : 88 -94 . DOI: 10.16790/j.cnki.1009-9239.im.2021.07.013
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Year 2021 volume 54 Issue 7
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.07.013
  • Receive Date：2021-01-17
  • Online Date：2026-03-20
  • Published：2021-07-20
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History
  • Received：2021-01-17
  • Revised：2021-03-14
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Affiliations
    1Dongfang Electric Machinery Co., Ltd., Deyang 618000, China
    2College of Electrical Engineering, Sichuan University, Chengdu 610065, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.07.013
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小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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