| アイテムタイプ |
itemtype_ver1(1) |
| 公開日 |
2025-10-31 |
| タイトル |
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タイトル |
Effective High-Frequency AC Conditioning in Vacuum |
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言語 |
en |
| 著者 |
Konagi, Ryota
Kojima, Hiroki
Iitsuka, Shinsuke
Kobayashi, Masato
Hayakawa, Naoki
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利 |
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権利情報 |
“© 2025 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.” |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
To improve the dielectric strength in a vacuum, spark conditioning through repetitive breakdowns by ac voltage application is an effective method. High-frequency ac conditioning is expected for the higher dielectric strength after conditioning, but the optimized frequency and other conditions for effective ac conditioning have not been clarified. In this article, applied ac voltage frequency and electrode material are investigated as parameters for the dielectric strength improvement by ac conditioning. High-frequency ac conditioning is conducted for the stainless steel (SUS) electrodes and compared with that for the Cu electrodes. Experimental results reveal that the high-frequency ac conditioning improves the dielectric strength by 13% at 550 Hz for the Cu electrodes, but does not almost improve for the SUS electrodes. For the electrode materials with high electrical conductivity, such as Cu, the harmful effects of unnecessary or multiple breakdowns during conventional or low-frequency ac conditioning would be relatively large. Thus, high-frequency ac conditioning can be effective for electrode materials with high electrical conductivity due to the suppression of multiple breakdowns. Second, impulse conditioning with shot-by-shot polarity reversal, i.e., no unnecessary or multiple breakdowns, is carried out in order to simulate the same condition as the optimized frequency of ac conditioning. As a result, the impulse breakdown voltage after impulse conditioning is similar to that after 550 Hz ac conditioning. This result suggests that high-frequency ac conditioning can be sufficiently effective by increasing the ac voltage frequency from 60 to 550 Hz. |
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言語 |
en |
| 出版者 |
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出版者 |
IEEE |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプresource |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1109/TDEI.2024.3501993 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
1070-9878 |
| 書誌情報 |
en : IEEE Transactions on Dielectrics and Electrical Insulation
巻 32,
号 4,
p. 2469-2474,
発行日 2025-08
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Effective_High_Frequency_AC_Conditioning_in_Vacuum.pdf (1.1 MB)
