高温超导电流引线电磁特性及交流损耗研究

摘要

AC losses calculation models for dodecagon structure of the HTS current leads were built based on the model of infinite stack tapes.For the symmetry of dodecagon structure,we could get the magnetic field of each pile of the tapes by establishing a suitable coordinate system on the cross section and rotating it.AC losses at a series of current could be calculated by running the program.Through drawing some pictures with the data obtained,the penetration depth and the AC losses at different current could be compared.Then the experimental platform was set up,AC losses of current leads in different frequency were measured and the calculated results were compared with the experiment results,better consistency was observed.%在无限长堆叠带材模型的基础上对高温超导电流引线的交流损耗建立了新的计算模型,即正十二边形骨架计算模型.由于正十二边形对称性,通过建立合适的坐标系,对坐标进行旋转即可求出每堆带材处的磁场.使用matlab编程计算并得出一系列电流下的交流损耗值,通过将所得数据绘成图形,比较了不同电流下穿透深度及交流损耗的大小.然后搭建实验平台,测量了不同频率下电流引线的交流损耗,并将理论与实验对比,得到较好的一致性.