Numerical Analysis of Cathode Temperature Distribution with Multiple Cathode Spots in Vacuum Arc under Axial Magnetic Field

カテゴリ: 研究会(論文単位)

論文No: EPP22093,SP22028,HV22074

グループ名: 【A】基礎・材料・共通部門 放電・プラズマ・パルスパワー/【B】電力・エネルギー部門 開閉保護/【B】電力・エネルギー部門 高電圧合同研究会

発行日: 2022/11/18

タイトル(英語): Numerical Analysis of Cathode Temperature Distribution with Multiple Cathode Spots in Vacuum Arc under Axial Magnetic Field

著者名: Takagi Masahiro(Tokyo City University),Suzuki Hiroto(Tokyo City University),Morishita Honoka(Tokyo City University),Suzuki Yuki(Tokyo City University),Nemoto Yusuke(Tokyo City University),Ren Zhenwei(Tokyo City University),Gustilo Reggie(De La Salle Unive

著者名(英語): Masahiro Takagi(Tokyo City University),Hiroto Suzuki(Tokyo City University),Honoka Morishita(Tokyo City University),Yuki Suzuki(Tokyo City University),Yusuke Nemoto(Tokyo City University),Zhenwei Ren(Tokyo City University),Reggie Gustilo(De La Salle Unive

キーワード: vacuum arc|multiple cathode spots|axial magnetic field|cathode temperature|three-dimensional electromagnetic thermal fluid simulation|vacuum arc|multiple cathode spots|axial magnetic field|cathode temperature|three-dimensional electromagnetic thermal flui

要約(日本語): For designing the vacuum interrupters, it is required to comprehend and predict the electrode temperature during current interrupting. In order to predict the electrode erosion and plasma density in post-arc affected by electrode temperature, the three-dimensional electromagnetic thermal fluid simulation has been developed. It has been reported that multiple cathode spots occur during current interrupting when the axial magnetic field is applied. The cathode temperature distribution was analyzed under consideration of multiple cathode spots in vacuum arc under axial magnetic field. As a result, it was suggested that it is necessary to set the 1.0 mm or more of distance between cathode spots with applying axial magnetic field. It could be possible to disperse the cathode spots and reduce the amount of metal vapor generated.

要約(英語): For designing the vacuum interrupters, it is required to comprehend and predict the electrode temperature during current interrupting. In order to predict the electrode erosion and plasma density in post-arc affected by electrode temperature, the three-dimensional electromagnetic thermal fluid simulation has been developed. It has been reported that multiple cathode spots occur during current interrupting when the axial magnetic field is applied. The cathode temperature distribution was analyzed under consideration of multiple cathode spots in vacuum arc under axial magnetic field. As a result, it was suggested that it is necessary to set the 1.0 mm or more of distance between cathode spots with applying axial magnetic field. It could be possible to disperse the cathode spots and reduce the amount of metal vapor generated.

本誌: 2022年11月21日-2022年11月22日放電・プラズマ・パルスパワー/開閉保護/高電圧合同研究会-1

本誌掲載ページ: 7-12 p

原稿種別: 英語

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