HTS块材与磁场间相互作用估算方法研究  

STUDY ON APPROXIMATION METHODS OF INTERACTIONS BETWEEN HTS AND PERMANENT MAGNETS

作　　者：杨广辉[1] 丘明[1] 肖玲[2] 焦玉磊[2] 郑明辉[2] 任洪涛[2] 

机构地区：[1]中国科学院电工研究所 [2]北京有色金属研究总院,北京100088

出　　处：《低温物理学报》2005年第A02期995-999,共5页Low Temperature Physical Letters

基　　金：国家自然科学基金(项目编号:50107010)资助的课题~~

摘　　要：HTS块材电磁机构日趋复杂,为了实现系统结构和电磁设计的优化需要建立一种简单可靠的方法来估算系统内部的相互作用.描述HTS磁学特性通常采用热激活磁通跳跃、磁通流动等系列模型,用其描述相互作用各有优缺点.为此,我们实验测试了HTS块材与永磁间相互作用随空间相对位置变化,并基于HTS完全抗磁性和临界态模型构造的B(H)曲线进行模拟仿真,通过与实验结果的比较,力求寻找一种方便可行、较为准确及可靠的HTS块材与磁场间相互作用估算方法.With systems composed by HTS bulks and permanent magnets more and more complex, a simple and reliable method to approximate the interactions between them is urgently needed. Since there have existed several models to describe the characteristics of HTS, such as perfect diamagnetic model, flux flow-creep model and critical state model, each has its advantages and disadvantages. To estimate the reliability of these models, an experiment has been carried out to measure the relationship between levitation force and distance. At the same time, simulation results based on perfect diamagnetic model and critical state model have been calculated out using finite element method （FEM） . By comparing experiment curves with simulation results, we hope to find out a reliable approximation method for practical applications.

关 键 词：HTS 完全抗磁性模型 临界态模型 有限元方法 

分 类 号：TM26[一般工业技术—材料科学与工程]