Modeling and analysis of torque characteristics for an axial HTS magnetic coupler

IF 1.3 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2025-04-07 DOI:10.1016/j.physc.2025.1354704

Liwang Ai , Pengfei Ma , Haichao Feng , Siyuan Jiang , Caixia Gao , Xiaozhuo Xu

{"title":"Modeling and analysis of torque characteristics for an axial HTS magnetic coupler","authors":"Liwang Ai , Pengfei Ma , Haichao Feng , Siyuan Jiang , Caixia Gao , Xiaozhuo Xu","doi":"10.1016/j.physc.2025.1354704","DOIUrl":null,"url":null,"abstract":"<div><div>The theoretical modeling of torque for an axial high-temperature superconductor (HTS) magnetic coupler (AHTSMC) is challenging due to the dual-rotor motion system with large relative displacement and the nonlinear <em>E</em>-<em>J</em> relationship of the HTS. In this paper, the models of torque calculation for AHTSMC are developed using numerical and analytical methods, and a comparative analysis is carried out to investigate the torque characteristics of AHTSMC. Firstly, the structure and operational principle of AHTSMC are described, and 2-D numerical simulations are performed based on the <strong><em>H</em></strong>-<em>φ</em> formulation. Also, experimental tests verified the simulation model. Then, the frozen-image model is improved by introducing two dipoles that represent the hysteresis of the HTS under an AC magnetic field, and by modifying the rule of frozen dipole. Based on the improved frozen-image model, the lateral force of the HTS- permanent magnets (PMs) system and the torque of the AHTSMC can be calculated. The results of the analytical calculations are basically in agreement with the numerical simulation results. Finally, the study showed that the AHTSMC can operate both asynchronously and synchronously. In asynchronous operation, the AHTSMC remains capable of transmitting torque, but there is significant fluctuation. In synchronous operation, the AHTSMC outputs a stable torque, and the magnitude of the torque is determined by the relative position angle between the PM rotor and the HTS rotor.</div></div>","PeriodicalId":20159,"journal":{"name":"Physica C-superconductivity and Its Applications","volume":"632 ","pages":"Article 1354704"},"PeriodicalIF":1.3000,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica C-superconductivity and Its Applications","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921453425000577","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

The theoretical modeling of torque for an axial high-temperature superconductor (HTS) magnetic coupler (AHTSMC) is challenging due to the dual-rotor motion system with large relative displacement and the nonlinear E-J relationship of the HTS. In this paper, the models of torque calculation for AHTSMC are developed using numerical and analytical methods, and a comparative analysis is carried out to investigate the torque characteristics of AHTSMC. Firstly, the structure and operational principle of AHTSMC are described, and 2-D numerical simulations are performed based on the H-φ formulation. Also, experimental tests verified the simulation model. Then, the frozen-image model is improved by introducing two dipoles that represent the hysteresis of the HTS under an AC magnetic field, and by modifying the rule of frozen dipole. Based on the improved frozen-image model, the lateral force of the HTS- permanent magnets (PMs) system and the torque of the AHTSMC can be calculated. The results of the analytical calculations are basically in agreement with the numerical simulation results. Finally, the study showed that the AHTSMC can operate both asynchronously and synchronously. In asynchronous operation, the AHTSMC remains capable of transmitting torque, but there is significant fluctuation. In synchronous operation, the AHTSMC outputs a stable torque, and the magnitude of the torque is determined by the relative position angle between the PM rotor and the HTS rotor.

查看原文本刊更多论文

轴向高温超导磁力耦合器转矩特性建模与分析

由于轴向高温超导体（HTS）磁力耦合器的双转子运动系统具有较大的相对位移和非线性E-J关系，对轴向高温超导体（AHTSMC）的转矩理论建模具有挑战性。本文采用数值方法和解析方法建立了AHTSMC转矩计算模型，并对AHTSMC转矩特性进行了对比分析。首先，介绍了AHTSMC的结构和工作原理，并基于H-φ公式进行了二维数值模拟。实验验证了仿真模型的正确性。然后，通过引入代表交流磁场下高温超导磁滞的两个偶极子，并修改冻结偶极子的规则，对冻结图像模型进行了改进。基于改进的冷冻图像模型，可以计算出HTS-永磁系统的侧向力和AHTSMC的转矩。解析计算结果与数值模拟结果基本一致。最后，研究表明，AHTSMC可以异步运行，也可以同步运行。异步运行时，AHTSMC仍能传递转矩，但存在较大波动。同步运行时，AHTSMC输出稳定转矩，转矩的大小由PM转子与HTS转子的相对位角决定。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.