Investigation of the effect of difference in the characteristic resistance of DP coils on the field and losses of MI HTS magnets

IF 1.3 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2024-06-02 DOI:10.1016/j.physc.2024.1354530

Shixian Liu , Lei Wang , Yong Chen , Zili Zhang , Luzhong Wang , Luoyuan Wang , Tengfei Zhi , Xinning Hu , Qiuliang Wang

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引用次数: 0

Abstract

We found a significant difference between the central and end magnetic field delays during the testing of a metal-insulation (MI) high-temperature superconducting (HTS) magnet. In this paper, we first analyzed the reasons for the difference in the field, and the results show that it is mainly due to the difference in the characteristic resistance of each double pancake (DP) coil. We further evaluated the effect of the difference on the electromagnetic analysis results of the MI HTS magnet. Subsequently, we developed an equivalent circuit model that considers the difference in the characteristic resistance of the DP coils and used the model to analyze the effect of this difference on the fields and losses generated by the MI HTS magnets, especially for AC conditions. Finally, based on our analytical results, a coil arrangement strategy considering the characteristic resistance of each DP coil was proposed. This work can guide us in evaluating the magnetic field more accurately in future engineering applications and provide a coil arrangement strategy for the MI HTS magnet, which requires to excite rapidly or generate an alternating magnetic field.

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DP 线圈特性阻抗差异对 MI HTS 磁体磁场和损耗影响的研究

在金属绝缘（MI）高温超导（HTS）磁体的测试过程中，我们发现中心磁场和末端磁场延迟之间存在明显差异。本文首先分析了磁场差异的原因，结果表明这主要是由于每个双饼线圈（DP）的特性阻抗不同造成的。我们进一步评估了这种差异对 MI HTS 磁体电磁分析结果的影响。随后，我们开发了一个考虑到 DP 线圈特性阻抗差异的等效电路模型，并使用该模型分析了这种差异对 MI HTS 磁体产生的磁场和损耗的影响，尤其是在交流条件下。最后，根据我们的分析结果，提出了考虑每个 DP 线圈特性阻抗的线圈排列策略。这项工作可以指导我们在未来的工程应用中更准确地评估磁场，并为需要快速激励或产生交变磁场的 MI HTS 磁体提供线圈布置策略。

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

Physica C-superconductivity and Its Applications 物理-物理：应用

CiteScore

2.70

自引率

11.80%

发文量

102

审稿时长

66 days

期刊介绍： Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.