葫芦形HTS环片堆叠磁体自感和互感分析  

Analysis on self-and-mutual-inductances of magnets stacked by HTS gourd loops

作　　者：郭丽宁 王银顺[1] 王婷[1] 连占英 卞雨妍 孟紫晴 李乐依 Guo Lining;Wang Yinshun;Wang Ting;Lian Zhanying;Bian Yuyan;Meng Ziqing;Li Leyi(State Key Laboratory for Alternate Electrical Power System with Renewable Source,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《低温与超导》2024年第8期11-16,61,共7页Cryogenics and Superconductivity

基　　金：国家自然科学基金(52377024)资助。

摘　　要：利用场冷(FC)励磁的葫芦形环片堆叠结构的高温超导(HTS)磁体,具备闭环运行的功能。为了准确计算堆叠葫芦形HTS环片的自感和互感,本文推导了适用于电流分布不均匀的葫芦形环片的电感解析式,并开展了液氮温度下葫芦形环片垂直磁场分布和径向电流密度分布的实验。将计算结果与有限元法得到的电感结果进行了比较,误差在2%以内。结果表明,该分析方法可以准确计算葫芦形环片的电感,并可以推广到该模型更大宽/高比的电感计算。High temperature superconducting(HTS)magnet with gourd-shaped loops stacked structure utilizing fieldcooling(FC)excitation is equipped with closed-loop operation.In order to accurately calculate the self-inductance and mutual-inductances of the stacked gourd-shaped HTS loops,an analytical equation was derived for the inductance applicable to the gourd-shaped loops with uneven current distribution and the experiments were carried out on the vertical magnetic field distribution and radial current density distribution of the gourd-shaped loop at the temperature of liquid nitrogen.The calculated values were compared with the inductance ones obtained by the finite element method,and the error was within 2%.The results show that the analytical method can accurately calculate the inductance of gourd-shaped loops and can be generalized to the calculation of the inductance of larger width/height ratios for this model.

关 键 词：葫芦形环片 高温超导磁体 场冷 互感 自感 

分 类 号：TM26[一般工业技术—材料科学与工程]