書誌事項
- タイトル別名
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- Trapped Field Characteristic of YBCO Bulk in AC External Magnetic Field
- チャクジサレタ バルク チョウデンドウタイ ノ コウリュウ ジカイ インカ トクセイ
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Trapped field characteristics are one of the key factors in the application of high-temperature superconducting bulk, such as magnetic levitation systems, motors, bulk magnets and so on. The immutable trapped field is required in superconducting bulk applications as a quasi-permanent magnet, however, the trapped field is influenced and changed by a time-varying external magnetic field in a realistic operational environment of electrical devices. This means that shielding current distribution within the bulk is changed by the time-varying magnetic field and the transient magnetic flux movement results in temperature rise and finally reduction of the trapped field. In this study, we observed the abrupt reduction of the trapped field for the external AC magnetic field in the range of frequency up to 50 Hz. And we also performed the numerical simulation using a newly developed computer program based on the finite element method (FEM). In the simulation program, the voltage-current (E-J) characteristics, which depend on the irreversibility temperature are taken into account. From these results, it can be considered that the abrupt reduction of the trapped field is caused by the temperature rise due to AC loss.
収録刊行物
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- 電気学会論文誌Ｂ（電力・エネルギー部門誌）
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電気学会論文誌Ｂ（電力・エネルギー部門誌） 124 (11), 1357-1364, 2004
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390001204602212736
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- NII論文ID
- 10013712942
- 30011601482
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- NII書誌ID
- AN10136334
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- ISSN
- 13488147
- 03854213
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- NDL書誌ID
- 7138049
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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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