无绝缘REBCO饼型线圈变形引起的特性电阻变化  

Characteristic resistance change of no-insulation REBCO pancake coils by deformation

作　　者：So Noguchi 

机构地区：[1]Hokkaido University,Kita 14 Nishi 9,Kita-ku,Sapporo,060-0814,Japan

出　　处：《Acta Mechanica Sinica》2024年第4期21-26,共6页力学学报（英文版）

摘　　要：近年来稀土钡铜氧化物(REBCO)饼型线圈在高磁场产生中的变形引起了人们的关注.一些考虑线圈变形的电流模拟显示了线圈变形可能影响屏蔽电流分布的可能性.屏蔽电流会产生强大的电磁力,对REBCO饼型线圈造成机械损伤.然而,线圈变形也可能影响无绝缘(NI)REBCO饼型线圈的接触电阻,通常称为“特性电阻”.NI特性电阻是NI REBCO饼型线圈稳定性的一个重要因素.因此,有必要研究随着线圈形状变形的NI接触电阻.本文展示了外部场充电和NI线圈充电期间NI特性电阻的变化.In recent years,the deformation of rare-earth barium copper oxide(REBCO)pancake coils for high magnetic field generations attracts attention.Several screening current simulation considering coil deformation shows a possibility that coil deformation affected screening current distribution.Screening currents would produce strong electromagnetic forces to mechanically damage REBCO pancake coils.Whereas,coil deformation also possibly affects the contact resistances of no-insulation(NI)REBCO pancake coils often called the“characteristic resistances”.The NI characteristic resistances are an important factor of the stability of NI REBCO pancake coil.Therefore,it is necessary to investigate the NI contact resistances as the coil shape deforms.As the result,the NI characteristic resistance change during an external field charging and an NI coil charging is shown in this paper.

关 键 词：屏蔽电流 接触电阻 线圈变形 铜氧化物 REBCO 电阻变化 机械损伤 电磁力 

分 类 号：TM26[一般工业技术—材料科学与工程]