三籽晶YBCO块材阵列中缝隙变化对其电磁力的影响(英文)  

MAGNETIC FORCES OF A SUPERCONDUCTING ARRAY COMPOSED OF THREE MULTI-SEEDED Y-Ba-Cu-O BLOCKS WITH DIFFERENT GAPS IN BETWEEN

作　　者：刘欢[1,2] 蒋冬辉[1] 马光同[1] 邓自刚[1] 

机构地区：[1]四川省成都市西南交通大学牵引动力国家重点实验室超导技术研究所,610031 [2]四川省成都市西南交通大学电气工程学院,610031

出　　处：《低温物理学报》2014年第1期20-27,共8页Low Temperature Physical Letters

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.50906093,51007076);the Fundamental Research Funds for the Central Universities(Grant No.SWJTU11ZT34);by the State Key Laboratory of Traction Power at Southwest Jiaotong University(Grant No.2013TPL_T05)~~

摘　　要：利用自制的实验设备,采用两种不同结构的永磁轨道,本文实验研究了由三块多籽晶YBCO超导块材组成的超导阵列的悬浮力和导向力随块材之间缝隙的变化关系,分析了块材之间的电磁相互作用对其悬浮力的影响。结果表明,块材之间的相互作用对其悬浮力的影响很弱,而块材之间间隙的改变对其悬浮力和导向力的影响却非常明显,具体表现为:对于正上方水平磁场分量占优的永磁轨道,增加块材之间的间隙会提高导向稳定性,但同时会降低悬浮能力;对于正上方竖直磁场分量占优的永磁轨道,增加块材之间的间隙会提高悬浮能力,但同时会降低导向稳定性。由此可见,对于一个给定的磁悬浮系统,可以简单地通过改变块材之间的间隙来满足不同应用条件下对悬浮能力和导向稳定性的需求。By using two practically interested magnetic rails to generate the applied magnetic field, the magnetic forces of a superconducting array composed of three multi-seeded Y-Ba-Cu-O blocks were experimentally measured under different conditions by a self-developed instrument. Through this experimental investigation, the mutual

关 键 词：高温超导体 磁悬浮 永磁轨道 磁场力 

分 类 号：U237[交通运输工程—道路与铁道工程]