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電気学会 共通英文誌 IEEJ Transactions on Electrical and Electronic Engineering (TEEE) に投稿していた任先輩(修士2年)の論文が、掲載されました!(Vol. 17, No. 2)

電気学会 共通英文誌 IEEJ Transactions on Electrical and Electronic Engineering (TEEE) に投稿していた任先輩(修士2年)の論文が、掲載されました!(Vol. 17, No. 2)

HiCELは、電気学会を通じて、私たちの成果を広く啓発する取り組みを強化しています。

Analysis of Adverse Influence of Metal Vapor to Arc Movement Between Electrodes with External Magnetic Field Applied by Numerical Simulation

First published: 21 October 2021

Abstract

The demand and sustainable development goals for electric vehicles (EVs) have been increasing. A quick charging circuit is an essential technology for EVs. To protect this circuit from faults or accidents, rapid interruption of the arc generated by the switching of direct current contactors (DCCs) is required. However, the DCCs have small sizes and close boundaries against an arc stretch toward the extinguishing chamber. The metal vapor generated by the electrodes causes the arc to remain between the electrodes instead of stretching forward, because the gas electrical conductivity increases when the metal vapor contaminates it. In this study, the arc movements with and without consideration of the metal vapor were simulated numerically to elucidate the influence of metal vapor on arc mobility. It was observed that the metal vapor generated from the electrodes causes the reattachment phenomenon to occur several times on the anode side, which increases the time of arc stretching into the extinguishing chamber. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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