Výsledky vyhledávání - "Gaku Asanuma"

Influence of Floating Shield Wall on Dynamic Behavior of Metal Vapor during Arc Sustaining by Moving Particle Semi-implicit (MPS) Simulation

Autor: Yasunori Tanaka, Yusuke Nakano, Takamitsu Miyazaki, Toshiyuki Onchi, Tatsuo Ishijima, Yuto Hatanaka, Gaku Asanuma

Publikováno v: 2020 29th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV).

For improvement of arc quenching performance in vacuum circuit breakers (VCBs), it is necessary to well-understand vacuum arc phenomena. To investigate dynamic behavior of metal vapor in vacuum arcs, a novel approach of a hybrid model using moving pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::20bf1ee911dece78e393ad960ec0ae77
https://doi.org/10.1109/isdeiv46977.2021.9586942

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Two-Dimensional Spectroscopy for Vacuum Arc in Steady State and Decaying State under Free-Recovery Condition

Autor: Gaku Asanuma, Tatsuo Ishijima, Yasunori Tanaka, Yusuke Nakano, Toshiyuki Onchi, Yuto Hatanaka, Yoshihiko Uesugi, Takamitsu Miyazaki

Publikováno v: 2020 29th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV).

In this paper, a fundamental experimental system was constructed for observation of vacuum arcs in steady states and transient states. A vacuum arc discharge was formed at currents of DC30 A and DC50 A. The IGBT was used to commutate the arc current

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22d5cd41314ec30f332ccb5502bc179a
https://doi.org/10.1109/isdeiv46977.2021.9586875

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Development of a Numerical Model on Metallic Vapor Behavior in Vacuum Arc Based on Moving Particle Semi-implicit Method and Finite Volume Method

Autor: Tatsuo Ishijima, Gaku Asanuma, Yasunori Tanaka, Yusuke Nakano, Yuto Hatanaka, Takamitsu Miyazaki, Toshiyuki Onchi

Publikováno v: 2020 29th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV).

A unique numerical model has been developed to simulate dynamic behavior of metallic vapor from the electrode in vacuum arcs using the moving particle semi-implicit (MPS) method combined with finite volume method (FVM). The MPS method is one particle

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f640ba71281aa5552ca900bddd2d3b6
https://doi.org/10.1109/isdeiv46977.2021.9586822

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Electricity, Machines, Control, and Processing in Machine Tools

Autor: Takahiro Ishikawa, Hideaki Fukuda, Takuya Fukuda, Toshihiro Fujinoki, Gaku Asanuma, Hisayoshi Muramatsu

Publikováno v: The Journal of the Institute of Electrical Engineers of Japan. 137:440-443

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fddbfeacc5dc41dbabcedb0eefba9c31
https://doi.org/10.1541/ieejjournal.137.440

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Numerical Modelling of Vapor Dynamics in Vacuum Arcs between Electrodes with Metal Shield Wall using Moving Particle Method

Autor: Tatsuo Ishijima, Toshiyuki Onchi, Takamitsu Miyazaki, Yoshihiko Uesugi, Yasunori Tanaka, Yusuke Nakano, Gaku Asanuma

Publikováno v: 2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST).

This paper describes calculation results on copper vapor dynamics in reduced pressure arcs between the copper electrodes with and without a metal shield wall surrounding. Such a reduced pressure arc can be seen during high current interruption betwee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ddf5867395170cc644c772bfd088d472
https://doi.org/10.1109/icepe-st.2019.8928723

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