中国物理B ›› 2020, Vol. 29 ›› Issue (7): 75204-075204.doi: 10.1088/1674-1056/ab8a3f

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Electrical modeling of dielectric barrier discharge considering surface charge on the plasma modified material

Hong-Lu Guan(关弘路), Xiang-Rong Chen(陈向荣), Tie Jiang(江铁), Hao Du(杜浩), Ashish Paramane, Hao Zhou(周浩)   

  1. 1 Zhejiang Provincial Key Laboratory of Electrical Machine Systems, College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;
    2 ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311200, China
  • 收稿日期:2020-02-13 修回日期:2020-03-25 出版日期:2020-07-05 发布日期:2020-07-05
  • 通讯作者: Xiang-Rong Chen E-mail:chenxiangrongxh@zju.edu.cn
  • 基金资助:
    Project supported by the National Key R&D Program of China (Grant No. 2018YFB0904400), the National Natural Science Foundation of China (Grant No. 51977187), the “Science and Technology Innovation 2025” Key Project of Ningbo City, China (Grant No. 2018B10019), the Natural Science Foundation of Zhejiang Province, China (Grant No. LY18E070003), the State Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid (Grant No. SKLHVDC-2019-KF-18), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2018QNA4017).

Electrical modeling of dielectric barrier discharge considering surface charge on the plasma modified material

Hong-Lu Guan(关弘路)1, Xiang-Rong Chen(陈向荣)1,2, Tie Jiang(江铁)1, Hao Du(杜浩)1, Ashish Paramane1, Hao Zhou(周浩)1   

  1. 1 Zhejiang Provincial Key Laboratory of Electrical Machine Systems, College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;
    2 ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311200, China
  • Received:2020-02-13 Revised:2020-03-25 Online:2020-07-05 Published:2020-07-05
  • Contact: Xiang-Rong Chen E-mail:chenxiangrongxh@zju.edu.cn
  • Supported by:
    Project supported by the National Key R&D Program of China (Grant No. 2018YFB0904400), the National Natural Science Foundation of China (Grant No. 51977187), the “Science and Technology Innovation 2025” Key Project of Ningbo City, China (Grant No. 2018B10019), the Natural Science Foundation of Zhejiang Province, China (Grant No. LY18E070003), the State Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid (Grant No. SKLHVDC-2019-KF-18), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2018QNA4017).

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摘要： We present the variations of electrical parameters of dielectric barrier discharge (DBD) when the DBD generator is used for the material modification, whereas the relevant physical mechanism is also elaborated. An equivalent circuit model is applied for a DBD generator working in a filament discharging mode, considering the addition of epoxy resin (EP) as the plasma modified material. The electrical parameters are calculated through the circuit model. The surface conductivity, surface potential decay, trap distributions and surface charge distributions on the EP surface before and after plasma treatments were measured and calculated. It is found that the coverage area of micro-discharge channels on the EP surface is increased with the discharging time under the same applied AC voltage. The results indicate that the plasma modified material could influence the ignition of new filaments in return during the modification process. Moreover, the surface conductivity and density of shallow traps with low trap energy of the EP samples increase after the plasma treatment. The surface charge distributions indicate that the improved surface properties accelerate the movement and redistribution of charge carriers on the EP surface. The variable electrical parameters of discharge are attributed to the redistribution of deposited surface charge on the plasma modified EP sample surface.

关键词: dielectric barrier discharge, surface charge, plasma treatment, circuit model

Abstract: We present the variations of electrical parameters of dielectric barrier discharge (DBD) when the DBD generator is used for the material modification, whereas the relevant physical mechanism is also elaborated. An equivalent circuit model is applied for a DBD generator working in a filament discharging mode, considering the addition of epoxy resin (EP) as the plasma modified material. The electrical parameters are calculated through the circuit model. The surface conductivity, surface potential decay, trap distributions and surface charge distributions on the EP surface before and after plasma treatments were measured and calculated. It is found that the coverage area of micro-discharge channels on the EP surface is increased with the discharging time under the same applied AC voltage. The results indicate that the plasma modified material could influence the ignition of new filaments in return during the modification process. Moreover, the surface conductivity and density of shallow traps with low trap energy of the EP samples increase after the plasma treatment. The surface charge distributions indicate that the improved surface properties accelerate the movement and redistribution of charge carriers on the EP surface. The variable electrical parameters of discharge are attributed to the redistribution of deposited surface charge on the plasma modified EP sample surface.

Key words: dielectric barrier discharge, surface charge, plasma treatment, circuit model

中图分类号:  (Plasma applications)

  • 52.77.-j
52.40.Hf (Plasma-material interactions; boundary layer effects) 68.55.aj (Insulators)