小型NbTi磁体的失超传播特性研究  

Quench transmitting property study on small-scale NbTi superconducting magnet

作　　者：李峰[1] 严仲明[2] 董亮[2] 闫强华[1] 朱英伟[1] 王豫[1,3] 

机构地区：[1]磁浮技术与磁浮列车教育部重点实验室西南交通大学,成都610031 [2]超导研究开发中心西南交通大学,成都610031 [3]超导研究开发中心,西南交通大学,成都610031

出　　处：《低温与超导》2009年第4期37-40,共4页Cryogenics and Superconductivity

基　　金：四川省科技支撑项目(2008FZ0126)资助

摘　　要：针对小型实验NbTi超导磁体,通过建立螺线管线圈正常态区域传播的数学模型来定性描述其三维传播特性,并就磁体失超的实验波形做深入分析,阐述绕组匝间及层间的热传导效应对磁体失超传播速度的影响,掌握实验磁体失超过程中的内阻变化曲线,为磁体的失超信号检测与保护奠定良好的理论基础。It＇s very important to master the magnet＇s quench transmitting property when we research the NbTi magnet＇s quench protection. A mathematical model of the magnet＇s quench transmittion was established to describe the. three - dimensional quenching property, we particularly analyzed the experimental curve when the magnet＇ quench happending, and expatiated the effect between the heat exchange and quench transmitting velocity. The changes of magnet＇s inner resistance were obtained to establish good academic foundation for the magnet＇s quench detection and protection.

关 键 词：超导 失超 失超传播 超导磁体 

分 类 号：TM265[一般工业技术—材料科学与工程] TN011[电气工程—电工理论与新技术]