Graduate School of Science and Engineering（Engineering）
理工学専攻（機能材料工学）
日本語
Update date：2024/12/26
Senior Assistant Professor
Jeon Hyeon-Gu

Degree

  1. 博士（工学）大阪大学

Papers

  1. Electrical treeing in triple layer silicone gel with different degrees of cross-linking and its dielectric strength2024井堀春生 大森樹 村上亮介 會田哲土 JEON Hyeon-Gu電気学会全国大会講演論文集(CD-ROM)2024
  2. Study of Propagation Mechanism of Electrical Tree with Simultaneous Observation of Discharge of Luminescence and the Treeing2024竹本光輝 村尾慶臣 JEON Hyeon-Gu 井堀春生電気学会全国大会講演論文集(CD-ROM)2024
  3. Electrical treeing phenomena in two-layer silicone gel with different crosslinking degrees and its dielectric strength2023/09Risa Kuroda Hyeon Gu Jeon Haruo IhoriElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)216/ 3Research paper (scientific journal)10.1002/eej.23437Silicone gel is widely used to encapsulate power modules, and improvement of its dielectric strength has been required. So, the purpose of our research is to improve dielectric strength of silicone gel encapsulant, and we focus on crosslinking degree of silicone gel. Previous studies have shown that growth mechanism of electrical tree changes with crosslinking degree of silicone gel. This suggests the possibility that the presence of the interface by different crosslinking degrees inhibits the tree growth. In this paper, we have investigated the tree growth and breakdown characteristics in silicone gel—crosslinking degrees graded layer materials. The interfaces in our study are arrange as being vertical to the line of electric force. Consequently, it was clarified that barrier effect of interface by different crosslinking degrees and the relaxation of electric field in low crosslinking degree region retards on tree growth, which improves the dielectric strength.
  4. Recognition and Classification of Electrical Treeing Images using Machine Learning2023/08/01Shiozaki Yudai Jeon Hyeon-Gu Ihori HaruoIEEJ Transactions on Fundamentals and Materials143/ 8, 282-28310.1541/ieejfms.143.282URLThe Institute of Electrical Engineers of JapanThe electrical tree is degradation traces of insulating materials. The mechanism of this electrical tree progress is not yet understood. Therefore, we wondered if machine learning could be used to elucidate the progress mechanism. First, we investigated the applicability of machine learning to electrical tree.
  5. Electrical Treeing Phenomena in Two-Layer Silicone Gel with Different Crosslinking Degrees and its Dielectric Strength2023/04/01Kuroda Risa Jeon Hyeon-Gu Ihori HaruoIEEJ Transactions on Fundamentals and Materials143/ 4, 166-17210.1541/ieejfms.143.166URLThe Institute of Electrical Engineers of JapanSilicone gel is widely used to encapsulate power modules, and improvement of its dielectric strength has been required. So, the purpose of our research is to improve dielectric strength of silicone gel encapsulant, and we focus on crosslinking degree of silicone gel. Previous studies have shown that growth mechanism of electrical tree changes with crosslinking degree of silicone gel. This suggests the possibility that the presence of the interface by different crosslinking degrees inhibits the tree growth. In this paper, we have investigated the tree growth and breakdown characteristics in silicone gel - crosslinking degrees graded layer materials. The interfaces in our study are arrange as being vertical to the line of electric force. Consequently, it was clarified that barrier effect of interface by different crosslinking degrees and the relaxation of electric field in low crosslinking degree region retards on tree growth, which improves the dielectric strength.
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Presentations

  1. Dependence of pearl-chain type tree in silicone gel on the waveform and the frequency of applied voltageInternational Symposium on Electrical Insulating Materials2017/12/04Oral presentation(general)
  2. Kerr optical measurement of electric field strength in gelatinous liquidInternational Symposium on Electrical Insulating Materials2017/10/27Oral presentation(general)
  3. パールチェーン型トリーに関する振動と極性電気関係学会四国支部連合大会講演論文集(CD-ROM)2017/09/16Oral presentation(general)
  4. パールチェーン型トリーのストリング部の進展について電気関係学会四国支部連合大会講演論文集(CD-ROM)2017/09/16Oral presentation(general)
  5. Study on the Dispersion Stability of Organic Semiconductor Colloids: Comparing p-type and n-type第78回応用物理学会秋季学術講演会2017/09/06Oral presentation(general)
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Industrial Property Rights

  1. Patent昇華精製装置特願2009-2019582009/09/01特開2011-0508532011/03/17
  2. Patent昇華精製装置特願2009-2019582009/09/01特開2011-0508532011/03/17特許第5585977号
  3. Patent微小有機結晶粒子の製造方法特願2009-2002072009/08/31特開2011-0519112011/03/17
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Allotted Class

  1. 2024Introduction to Materials Characterization
  2. 2024Semiconductor Materials
  3. 2024Advanced Engineering 3 (Seminar on Materials Science and Engineering)
  4. 2024Practice of Materials Characterization
  5. 2024Freshman Seminar A
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