Development of Calculation Method for Melting Amount Mass of Contact Wire Caused by Melting and Evaporation of Molten Metal Bridge and Arc Generation

Morishita, Honoka; Maeda, Yasuhiro; Ren, Zhenwei; Nemoto, Yusuke; Hayasaka, Takamasa; Iwao, Toru

doi:10.1541/ieejias.142.410

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2022

2023

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Cited by 2 publications

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“…In chronological order, molten metal bridges are first generated while the electrodes begin separating; then, the molten metal explodes, resulting in arc discharge. The authors use numerical simulations to mimic this series of phenomena to elucidate the mechanisms of wear of the contact strip and contact wire with the aim of reducing maintenance costs [1].…”

Section: Introductionmentioning

confidence: 99%

Size of Molten Metal Bridge Conducting DC Current in Different Contact Strip Materials

Hayasaka

Morishita

Ren

et al. 2022

IEEJ Transactions Elec Engng

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Numerical simulations are commonly used to elucidate the arc phenomenon in electrical railways and analyze its physical property variations. However, the initial conditions of the molten metal bridge must be set to accurately mimic the arc phenomenon. Therefore, the radius and length of the molten metal bridge are experimentally measured immediately before arc generation for four different contact strip materials as the cathode and copper contact wire as the anode. It found that the radius and length of molten metal bridge both proportional to the current regardless of the contact strip material.

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Section: Introductionmentioning

confidence: 99%