不同重叠排列方式的双层高温超导块材在永磁轨道上方的悬浮特性  

Levitation performance of double-layer bulk high-T_c superconductor with different superposition arrangements above permanent magnet guideway

作　　者：廖兴林[1,2,3] 郑珺[4,2,3] 刘璐[2,3] 刘伟[2,3] 林群煦 马光同[4,2,3] 王家素[2,3] 王素玉[2,3] 

机构地区：[1]西南交通大学电气工程学院,成都610031 [2]西南交通大学超导技术研究所,成都610031 [3]轨道交通国家实验室,成都610031 [4]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《低温与超导》2010年第10期18-22,共5页Cryogenics and Superconductivity

基　　金：国家"863"项目(2007AA03Z210);四川省科技基础项目(2009SZ0212);西南交通大学牵引动力国家重点实验室项目(2009TPL_Z01)资助

摘　　要：研究了永磁轨道上方双层高温超导块材两种不同堆叠方式(籽晶生长线对齐方式和籽晶生长线错开方式)的悬浮特性。实验发现:这两种不同的堆叠方式对悬浮性能有不同的影响。随着场冷高度的增加,它们对悬浮性能的增加效应越来越弱,这种现象对于悬浮力来说尤其明显。场冷高度为10 mm和15 mm时,对悬浮力来说,籽晶生长线对齐堆叠方式与错开方式相比,第一次测量时前者减少的百分比为11.588%和0.870%,第二次测量时为12.693%和1.363%,第三次测量时为12.399%和1.370%。导向力也有类似的结论。经实验可以看出,可以通过优化每一块高温超导块材的具体摆放位置,来提高高温超导磁悬浮车的承载能力和稳定性。同时,这一结果对高温超导磁悬浮轴承、飞轮储能等悬浮间距小的场所也具有一定的参考价值。Levitation performance of the double-layer bulk high temperature superconductor（HTSC） arrangement pattern was studied above the permanent magnet guidway（PMG）,with the aligned growth section boundary arrangement pattern（AGSBAP） and the misaligned growth section boundary arrangement pattern（MGSBAP）.Experiment shows these two kinds of arrangement patterns have different influences on levitation performance.With the increasing of field cooling height,the increasing effect becomes weaker,especially the levitation force.Compared with MGSBAP,at the 10 mm and 15 mm field cooling heights,the levitation force of AGSBAP decreases by 11.588% and 0.870%（the first measure）,12.693% and 1.363%（the second measure）,12.399% and 1.370%（the third measure） respectively.The similar increasing effect is also concluded in terms of guidance force.It indicates that the carrying capacity and stability of the HTS Maglev devices can be enhanced by optimizing the arrangement position of every bulk HTSC.Meanwhile,the conclusions provide some references to other HTS maglev systems with a small levitation gap,i.e.,HTS maglev bearing and flywheel energy storage system.

关 键 词：磁悬浮 堆叠 高温超导块材 籽晶生长线 

分 类 号：U213.2[交通运输工程—道路与铁道工程]