書誌事項
- タイトル別名
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- Development of an Estimation Method using Transient Circuit Analysis for the Initial Normal Zone in a Low-temperature Superconducting Magnet System
- テイオン チョウデンドウジシャク ソウチ ニ オケル カト カイロ カイセキ ニ ヨル ジョウデンドウブ ハッセイ イチ ヒョウテイ シュホウ ノ カイハツ
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In order to find the cause of quenching in superconducting magnets, it is important to identify the initial normal zone. We focus on the changing tendency of the voltage across the coil just after the normal transition increases with an increase in the magnetic flux density of the initial normal zone. We develop an estimation method for the initial normal zone of the coil crosssectional direction by searching for the result closest to the measured waveforms from among the results of the transient circuit analysis that assumed the initial normal zone. Functional approximation using a nonlinear least-squares method is used for the search. Applying this technique to the low-temperature superconducting magnet system, we could identify the initial normal zone. This evaluation result is consistent with the result obtained by the interlayer voltage measurement. Since there is no need to install multiple voltage terminals inside the coil, this technique is a non-invasive evaluation method.
収録刊行物
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- 低温工学
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低温工学 47 (9), 576-582, 2012
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
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詳細情報 詳細情報について
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- CRID
- 1390282679590536960
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- NII論文ID
- 10030877924
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- NII書誌ID
- AN00333419
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- ISSN
- 18800408
- 03892441
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- NDL書誌ID
- 024019029
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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