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

doi:10.1088/1361-6668/ab7c52

	Screening current effect on the stress and strain distribution in REBCO high-field magnets: experimental verification and numerical analysis
	Yan, Yufan 3; Xin, Canjie 4; Guan, Mingzhi 4; Liu, Huajun 1; Tan, Yunfei 2; Qu, Timing 3
刊名	SUPERCONDUCTOR SCIENCE & TECHNOLOGY
	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
DOI	10.1088/1361-6668/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.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB25000000] ; National Natural Science Foundation of China[U1632276]
WOS关键词	CURRENT SWEEP CYCLE
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000522095900001
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
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.