Influence of Breaking Arc on Mass and Surface Condition of Current-Collecting Materials

Hayasaka, Takamasa; Kubota, Yoshitaka

doi:10.1541/ieejias.132.163

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…The differences in the slopes of the plots of mass variation of the contact wires, shown in Figures 3 and 4, is due to the use of a different cathode material. 5 Arcing due to contact loss and measurement system Properties of the arc light…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, we developed an electrode-switching device for use in laboratory-based testing of current-collecting materials and investigated the influence of the arc discharge on these materials. 5 Figure 1 shows a circuit diagram of the electrodeswitching device and its measuring apparatus. The device is equipped with vertical electrodes and a moving stage that can move up and down at a preset speed.…”

Section: Influence Of An Arc Discharge On Current-collecting Materialmentioning

confidence: 99%

Section: Influence Of An Arc Discharge On Current-collecting Materialsmentioning

confidence: 99%

See 2 more Smart Citations

An arc-light-based method for estimation of contact strip wear

Hayasaka

Shimizu

Akagi

2015

Proceedings of the Institution of Mechanical Engineers, Part F:

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A measured contact-loss ratio is used to estimate current-collection performance. There are two types of methods used to estimate the contact-loss ratio. One is to measure all the contact losses, including small ones; the other is to measure only contact losses that are greater than 5 ms in duration. The extent of wear of a contact strip caused by arc discharges varies as a function of the amount of electric charge. This fact makes it possible to manage the wear on a contact strip. This paper shows a calculation method for the amount of electric charge based on the output of a contact-loss measurement as well as the expected lifetime of the contact strip and the creation of a maintenance threshold level for of the contact strip.

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Section: Resultsmentioning

confidence: 99%

Section: Influence Of An Arc Discharge On Current-collecting Materialmentioning

confidence: 99%

See 1 more Smart Citation

An arc-light-based method for estimation of contact strip wear

Hayasaka

Shimizu

Akagi

2015

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…experimentally reported the influence of an arc discharge on a contact wire. However, it was difficult to elucidate the phenomenon of arc discharge in a pantograph because the time scale of this phenomenon was on the order of milliseconds . Therefore, the elucidation of theoretical physical phenomena using a numerical analysis is also required, through which the arc discharge with the electromagnetic force caused by the magnetic field from a contact wire can be analyzed.…”

Section: Re‐strike Phenomenon Analysis For DC Circuit Breaker and Elementioning

confidence: 99%

Review of Thermal Plasma Simulation Technique

Tanaka

Fujino

Iwao

2019

IEEJ Transactions Elec Engng

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The thermal plasma is widely used for power applications such as circuit breakers, welding, cutting, material processing, waste treatment, and recycling. Transient and three-dimensional simulations have recently been conducted, assisting in the understanding of physical phenomena through new developments in computers and calculation methods. In this review, a thermal plasma simulation technique is described. Specifically, the modeling of a new type of inductively coupled thermal plasma, a radiation transfer analysis of thermal plasma in a gas circuit breaker, and plasma movement of arc welding, DC circuit breakers, electric trains, vacuum circuit breakers, and surface treatment affected by an electromagnetic force are described.

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Numerical simulation of external magnetic field effect on arc plasma after molten metal bridge breaking under different electrode opening velocities

et al. 2022

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In this study, a three-dimensional electromagnetic thermal fluid simulation program was developed to simulate arc movement numerically while considering metal vapor generated from a molten metal bridge along with an electrode opening under external magnetic field application. The change in the physical properties of the arc and the increment rate of the arc voltage per unit length under different electrode opening velocities were analyzed by applying an external magnetic field with different intensities. It was found that the current path of the arc became dispersed when the electrode opening velocity was high because the metal vapor generated from the molten metal bridge remained dominant and highly concentrated. Before the completion of the electrode opening process, the difference in the increment rate of the arc voltage per unit length at different electrode opening velocities became more significant when an external magnetic field was applied. This was because under high and low electrode opening velocities, the cross-sectional area of the arc became narrow and broad, respectively.

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Influence of Breaking Arc on Mass and Surface Condition of Current-Collecting Materials

Cited by 5 publications

References 3 publications

An arc-light-based method for estimation of contact strip wear

An arc-light-based method for estimation of contact strip wear

Review of Thermal Plasma Simulation Technique

Numerical simulation of external magnetic field effect on arc plasma after molten metal bridge breaking under different electrode opening velocities

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