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A Simple and Versatile Evaluation Method of Thermal Stability of NI HTS Magnets
| Title: | A Simple and Versatile Evaluation Method of Thermal Stability of NI HTS Magnets |
| Authors: | Mato, Takanobu Browse this author | | Noguchi, So Browse this author →KAKEN DB |
| Keywords: | HTS magnet | | no-insulation winding technique | | simple evaluation | | thermal stability |
| Issue Date: | 27-Dec-2023 |
| Publisher: | IEEE (Institute of Electrical and Electronics Engineers) |
| Journal Title: | IEEE transactions on applied superconductivity |
| Volume: | 34 |
| Issue: | 5 |
| Start Page: | 4700805 |
| Publisher DOI: | 10.1109/TASC.2023.3347379 |
| Abstract: | In this article, a simple and versatile method of thermal stability evaluation for no-insulation (NI) high-temperature superconducting (HTS) magnets is proposed. Thermal stability is fundamental to superconducting magnets. The evaluation of coil temperature is an essential part of magnet design even though NI HTS magnets exhibit high thermal stability. Already proposed methods with complicated equivalent circuits, such as a partial element equivalent circuit (PEEC) model and a network model, require a long computation time and complication in coding. Hence, a simple way to evaluate the thermal stability of NI HTS coils is strongly desired; e.g., for a preliminary-design purpose. A method proposed in the article is a simple analytical formula derived from an equivalent RL-parallel circuit model of an NI HTS coil. The formulation considers a cooling effect with a simple assumption and Joule heating on radial (turn-to-turn contact) resistances. For a trial of the proposed simple evaluation, the thermal stability investigation is presented comparing the temperatures of the sudden discharge and ramp down. The results of the proposed analytical method are also compared with the PEEC model. |
| Rights: | © 2024 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. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/91228 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 野口 聡
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