金属封装内冷型高温复合超导体电磁特性的有限元分析

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英文篇名：Finite element analysis of electromagnetic characteristics of internal cooling high temperature superconducting composite conductors 作者：王海洋 ; 诸嘉慧 ; 方进 ; 陈洁 ; 饶双全 ; 姜哲南 ; 罗德·巴德库克 英文作者：Wang Haiyang;Zhu Jiahui;Fang Jin;Chen Jie;Rao Shuangquan;Jiang Zhenan;Rodney Badcock;School of Electrical Engineering,Beijing Jiaotong University;China Electric Power Research Institute;Robinson Research Institute,Victoria University of Wellington; 关键词：复合导体 ; 有限元 ; 临界电流 ; 交流损耗 ; COMSOL 英文关键词：Composite conductor;;Finite element;;Critical current;;AC loss;;COMSOL 中文刊名：DWYC 英文刊名：Cryogenics & Superconductivity 机构：北京交通大学电气工程学院;中国电力科学研究院;惠灵顿维多利亚大学罗宾逊研究所; 出版日期：2019-03-01 09:12 出版单位：低温与超导 年：2019 期：v.47 基金：国家自然科学基金项目(11772025);; 国家重点研发计划(2017YFB0903504,2018YFB0904400);; 国家电网公司科技项目(DG71-16-002,DG71-18-004) 语种：中文; 页：DWYC201902008 页数：5 CN：02 ISSN：34-1059/O4 分类号：40-44

摘要

基于工程化高温超导带材的内冷型复合超导体电磁特性受磁场各向异性影响较大,采用有限元方法分析了内冷型复合超导体的电磁特性。利用COMSOL Multiphysics建立了基于商品化高温超导带材的金属封装内冷型高温复合导体的有限元计算模型,并对其进行电磁仿真分析,得到了内冷型复合超导体的磁场分布,应用高温超导材料在磁场下的Jc-B曲线关系,获得内冷型复合导体在77K液氮温区下临界电流受磁场影响的变化规律。采用电场强度与电流密度进行面积分的方法,计算得到了不同频率、不同通流下内冷型复合导体的交流损耗情况,计算表明,相同频率下交流损耗随激励电流的增大而增大,相同激励电流条件下交流损耗与通流频率成正比关系。
        The electromagnetic properties of internal cooling high temperaturesuperconducting( HTS) composite conductors based on commercial high-temperature superconducting tape are greatly affected by the magnetic field anisotropy. The electromagnetic properties of the internal cooling HTS composite conductors were analyzed by finite element method. The finite element calculation model of internal cooling HTS composite conductors was established by using COMSOL Multiphysics,and the electromagnetic simulation was carried out to obtain the magnetic field distribution of the internal cooling HTS composite conductors. Using the Jc-B curve of high temperature superconducting materials under magnetic field,the critical current variation of the internal cooling HTS composite conductors in the 77 K liquid nitrogen temperature zone was obtained. The AC loss of the internal cooling composite conductor at different frequencies and currents was calculated by area division of electric field intensity and current density. At the same frequency,the AC loss increases with the increase of the excitation current. Under the same excitation current,the AC loss is proportional to the current frequency.

引文

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