高温超导YBCO带材的交流损耗的FEM仿真分析  

FEM modeling of AC loss in YBCO coated conductor

作　　者：李晓群[1] 何清[2] 金涛[2] 周世平[2] 李敬东[1] 任丽[1] 唐跃进[1] 伍科[1] 

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学),武汉430074 [2]湖北省电力公司电力试验研究院,武汉430077

出　　处：《低温与超导》2012年第12期1-4,61,共5页Cryogenics and Superconductivity

基　　金：中央高校基本科研业务费资助(2011TS103)

摘　　要：对高温超导带材YBCO的交流损耗进行了仿真分析。运用有限元FEM方法,基于Maxwell方程组的数值建模,引入了基于实验数据的power-law对交流损耗进行计算。首先对自场下的交流损耗值进行了仿真计算并分析了带材的电流密度与磁场分布情况,并通过与实验测量数据做比较验证仿真方法的有效性。其次分别对不同幅值下的平行场与垂直场下的交流损耗进行了计算,将自场、平行场以及垂直场下的电流密度与磁场强度的分布以及交流损耗值进行了对比分析。In this paper, the AC loss of YBCO coated conductor was simulated. Based on Maxwell equations, the power- law model derived from the data of experiments was implemented into of the Finite Element Method （FEM）. Firstly, the AC loss of self- field was simulated and the distributions of current density and magnetic field were presented. The comparison between experimental results and simulated results was provided for proving validity of this model. What~ more, different amplitudes of extra parallel and vertical fields were applied to analyze the AC loss in HTS tape. The different AC losses were analyzed based on the distribution of current density and magnetic field in self- field, parallel field and vertical field.

关 键 词：交流损耗 YBCO 超导体 FEM 仿真 

分 类 号：O441.4[理学—电磁学]