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Screening current effect on the stress and strain distribution in REBCO high-field magnets: experimental verification and numerical analysis

文献类型：期刊论文

作者Yan, Yufan3; Xin, Canjie4; Guan, Mingzhi4; Liu, Huajun1; Tan, Yunfei2; Qu, Timing3
刊名SUPERCONDUCTOR SCIENCE & TECHNOLOGY
出版日期2020-05-01
卷号33期号:5页码:6
关键词high-field magnets screening currents REBCO strain distribution
ISSN号0953-2048
DOI10.1088/1361-6668/ab7c52
通讯作者Qu, Timing(tmqu@mail.tsinghua.edu.cn)
英文摘要The shielding (or screening current) effect in high-T-c coated conductors has a strong influence on its stress/strain distribution in a coil winding, especially during high-field operations. To demonstrate this phenomenon, a special experimental setup was designed. With an LTS background magnet and a small HTS insert coil, we were able to carry out direct observations on the hoop strains of a 10 mm wide REBCO sample. Measured data was compared with numerical solutions obtained from models based on T-A formulation and elastic models, showing good agreement. An analytical expression was proposed to estimate the maximum radial Lorentz force considering the screening current effect. Using the developed numerical models, we further studied two methods that are utilized for reducing the screening-current-induced magnetic field, i.e. use of multi-filamentary conductors and current sweep reversal approach.
WOS关键词CURRENT SWEEP CYCLE
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB25000000] ; National Natural Science Foundation of China[U1632276]
WOS研究方向Physics
语种英语
WOS记录号WOS:000522095900001
出版者IOP PUBLISHING LTD
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China
源URL[http://119.78.100.186/handle/113462/140635]  
专题中国科学院近代物理研究所
通讯作者Qu, Timing
作者单位1.Chinese Acad Sci, Heifei Inst Phys Sci, Hefei 230031, Peoples R China
2.Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China
3.Tsinghua Univ, Dept Mech Engn, State Key Lab Tribol, Beijing 100084, Peoples R China
4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Yufan,Xin, Canjie,Guan, Mingzhi,et al. Screening current effect on the stress and strain distribution in REBCO high-field magnets: experimental verification and numerical analysis[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2020,33(5):6.
APA Yan, Yufan,Xin, Canjie,Guan, Mingzhi,Liu, Huajun,Tan, Yunfei,&Qu, Timing.(2020).Screening current effect on the stress and strain distribution in REBCO high-field magnets: experimental verification and numerical analysis.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,33(5),6.
MLA Yan, Yufan,et al."Screening current effect on the stress and strain distribution in REBCO high-field magnets: experimental verification and numerical analysis".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 33.5(2020):6.

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来源：近代物理研究所

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