Experimental Study on Temperature-Controlled Charging Sequence for Reduction of Screening Current Effect in HTS Magnet

IF 1.7 3区物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Applied Superconductivity Pub Date : 2025-03-04 DOI:10.1109/TASC.2025.3547814

Hyunsoo Park;Geonyoung Kim;Jaemin Kim;Chaemin Im;Jeonghwan Park;Wooseung Lee;Wonseok Jang;Gaël Berthet;JuKyung Cha;Yufan Yan;Wonju Jung;Seungyong Hahn

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引用次数: 0

Abstract

High-temperature superconductor (HTS) rare-earth barium copper oxide (REBCO) conductor has been extensively researched and developed for various applications. However, due to the intrinsic properties of REBCO conductors, the screening current occurs and this effect causes induced field and stress in superconducting magnets. Therefore, we investigated a strategy to mitigate the screening current effect in HTS magnets with the simultaneous control of temperature and current. In this paper, we ramped up the coil and measured the magnetic field of the HTS magnet as a references on conduction cooling system within different temperature: 20 K and 50 K. Then, the temperature-controlled charging sequence method with PID control was conducted so that the current ramping up simultaneously started with the magnet cool down: (1) 50 K to 20 K and (2) 80 K to 50 K. Finally, we analyzed the experiment results of the magnetic field distribution compared to reference charging values. These results showed the possibility to develop the operating techniques for high-field REBCO magnets that reduce the screening current induced field.

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降低高温超导磁体屏蔽电流效应的温控充电顺序实验研究

高温超导体（HTS）稀土钡氧化铜（REBCO）导体在各种应用领域得到了广泛的研究和开发。然而，由于REBCO导体的固有特性，在超导磁体中会产生屏蔽电流，从而产生感应磁场和应力。因此，我们研究了一种通过同时控制温度和电流来减轻高温超导磁体中屏蔽电流效应的策略。本文在20 K和50 K两种不同温度下，对高温超导磁体的磁场进行了测量，作为传导冷却系统的参考。然后，采用带PID控制的温控充电顺序法，使磁体降温(1)50 K至20 K， (2) 80 K至50 K时，电流上升同时开始。最后，将实验结果与参考充电值进行对比分析。这些结果表明了开发高场REBCO磁体的操作技术以减少筛选电流感应场的可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Applied Superconductivity 工程技术-工程：电子与电气

CiteScore

3.50

自引率

33.30%

发文量

650

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.