Experimental and numerical study of radial and axial HTS magnetic couplers  

作　　者：Maxim Osipov Irina Martirosian Aleksandr Starikovskii Dmitrii Aleksandrov National Research 

机构地区：[1]Nuclear University MEPhI(Moscow Engineering Physics Institute),Moscow,Russia

出　　处：《Superconductivity》2024年第4期9-21,共13页超导(英文)

基　　金：The work was carried out under the State Assignment(project FSWU‐2022‐0013)with the support of the Ministry of Science;Higher Education of the Russian Federation.

摘　　要：The paper presents the results of an experimental study and numerical cakulations of torques in magnetic cou-plers of various configurations.A comparison was made for model couplers based on permanent magnets(PMG)and couplers based on high-temperature superconducting(HTS)tapes cooled with liquid nitrogen.In PMG-couplers,both coupler halves are made of pemmanent magnets,while in HTS-couplers,one coupler half is axial and radial configurations,with different clearances between the coupler halves.The results of experimental made of HTS-tapes stacks,and the second of permanent magnets.Both types of couplers are considered in both studies showed that in the configurations we considered,radial HTS-co uplers are superior to their axialanalogues in termsof the maximum torque between the coupler halves.In addition,in the considered configurations,PMG couplers excceded their HTS analogues in torque by 10times.Numerical finite element calculations usinga com-bined A-T-H form ulation were used to optimize the design of the HTS-coupler.The model was verified using the obtained experimental data for moments in model couplers.The model was used to calculate an optimized cou-pler with added HTS-windings,lowerHTS temperature and strongerpermanent magnets.The calculation results showed that HTS-couplers can be comparable with their PMG analogues,at the same time they are significantly superior to them in damping external disturbances.Due to the fact that the best characteristics were shown by model radial couplers with m inimal gaps between the coupler halves,radial couplers were manufactured based on windings of 10 and 20 layers of HTS-tapes and the torques in them weremeasured in theFCandZFC modes.It has been shown that in most operating conditions,10-layer couplers outperform 20-layer couplers.

关 键 词：High temperature superconductors CC‐tapes Superconducting levitation Magnetic couplers 

分 类 号：TL5[核科学技术—核技术及应用]