基于磁滞效应的YBCO块材磁刚度测试方法  

YBCO bulk magnetic stiffness measuring method based on magnetic hysteretic effect

作　　者：芦逸云[1] 段晓明[1] 王家素[2] 

机构地区：[1]洛阳理工学院电气工程与自动化系,洛阳471023 [2]西南交通大学超导技术应用研究所,成都610031

出　　处：《低温与超导》2011年第4期17-19,23,共4页Cryogenics and Superconductivity

基　　金：洛阳理工学院博士启动基金(2009BZ16)资助

摘　　要：处于外磁场中的高温超导块材具有自稳定性。这种特性使得高温超导块材在磁悬浮轴承、飞轮储能、磁悬浮列车等方面,具有潜在的应用价值。非理想高温超导体具有很强的磁通钉扎特性,表现出很强的磁滞性。处于悬浮状态的高稳超导体,其稳定特性与其悬浮刚度密不可分。文中首先描述了高温超导块材磁悬浮测试系统磁刚度测试原理。此刚度测试方法充分考虑了非理想高温超导块材磁滞效应对磁刚度的影响。基于这种测试方法,研究了YBCO块材在永磁轨道上方悬浮力刚度的特性。通过与传统刚度测试方法比较,这种方法更能反应高温超导磁悬浮车实际磁刚度特性。High-temperature superconducting bulk can stably levitate above permanent magnet.These characteristics make it possible for HTS bulk to be used in magnetic levitation bear,magnetic levitation flying wheel energy storing system and magnetic levitation transportation system.HTS has the characteristics of strong flux ping and then exhibits high magnetic hysteretic.For stable levitation of HTS bulk,there is a tight relationship between its stable property and magnetic levitation stiffness.This paper described the principle of magnetic stiffness measurement of HTS magnetic levitation system.This method considerd the influence of HTS bulk hysteretic of magnetic stiffness measurement.Based on the method,we researched YBCO bulk magnetic levitation stiffness property above permanent magnet guideway.Compared with two experimental research results,it is found that this method can do well for magnetic levitation system optimum design.

关 键 词：高温超导 磁滞 刚度 磁悬浮 

分 类 号：U665.18[交通运输工程—船舶及航道工程]