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An Evaluation of a Vacuum Arc Instability Phenomenon with The Silver-Palladium Compound Material on The Cathode Spot
http://hdl.handle.net/10458/6752
http://hdl.handle.net/10458/67525acab606-8b6a-464d-8034-eac51f75f103
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文 (463.2 kB)
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| Item type | 会議発表論文 / Conference Paper(1) | |||||
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| 公開日 | 2020-06-21 | |||||
| タイトル | ||||||
| タイトル | An Evaluation of a Vacuum Arc Instability Phenomenon with The Silver-Palladium Compound Material on The Cathode Spot | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
| 資源タイプ | conference paper | |||||
| 著者 |
N., Kamata
× N., Kamata× N., Mungkung× T., Yuji× Y., Suzaki× H., Akatsuka |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The purpose of this study was to analyze instability of silver and palladium as alloy cathode on the contact surface in a vacuum and make comparison. We also focused on new alloy materials, mainly Pd, a material with low ionization tendency. We observed unstable current chopping phenomenon when Ag and Pd were used in a vacuum circuit breaker to evaluate the unstable region. So far, we changed the percentage of materials in a compound electrode material of Ag and Pd to 1 %, 2 %, and 4 % to observe the changes in the transient voltage as the percentage of Pd on the cathode spot increased. We also performed simulation using bisection method to evaluate the degree of ionization in the collisionless sheath. In the cathode spot region, these collisions are recognized as space charges and sheaths when connected to a single ionization collisional plasma. In the preceding works, we found out that the transient voltage dropped when the percentage of Pd in the cathode increased. Main operating principle of the vacuum circuit breaker used in a switchgear is to have electrodes in high vacuum and when the arc discharge generated upon opening of the electrodes becomes metallic vapor which will be ionized between electrodes and maintain the arc discharge, and then becomes an excellent insulator to shut off the transient current. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : International Conference on Applied Electrical and Mechanical Engineering 2019 p. 9-13, 発行日 2019-09 |
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| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
