Calculation of AC losses in HTS tape with FEA program ANSYS
Calculation of AC losses in HTS tape with FEA program ANSYS
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DOI：
10.1109/tasc.2005.848248
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发表时间：
2005-06
影响因子：
1.8
通讯作者：
C. Gu;Z. Han
中科院分区：
文献类型：
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作者：
C. Gu;Z. Han
商用有限元分析软件ANSYS主要是为解决铁磁性材料和传统导体的问题而设计的，它被用于模拟高温超导带在传输电流或暴露在垂直场中的交流损耗。详细介绍了如何开发程序作为HTS材料的计算工具；特别讨论了影响数值精度和效率的几个因素。该方法基于二维电磁瞬变分析，其中高温超导材料的电导率根据幂律进行模拟。常用的通量蠕变模型和Bean模型可以通过将幂律指标值从2调整到/spl / /来实现。对于Bean模型，仿真结果与Norris给出的解析公式进行了比较，误差小于0.5%。对于通量蠕变模型，通过与Brandt方法在基本圆柱体几何形状下的比较来估计其精度，显示出很好的一致性。
The commercially available finite element analysis program ANSYS, primarily designed for solving problems for ferromagnetic materials and conventional conductors, has been used for simulating the ac losses in HTS tape carrying transport current or exposed to a perpendicular field. Details on how to develop the program as a calculation tool for HTS materials are presented; in particular some factors related to the numerical accuracy and efficiency are discussed. The approach is based on a 2D electromagnetic transient analysis, where the conductivity of the HTS material is simulated in terms of a power law. The commonly used flux creep model and Bean model can be realized by adjusting the power law index value from 2 to /spl infin/. For the Bean model, the simulated results are verified by comparison with the analytical formulas given by Norris, which shows the error to be less than 0.5%. For the flux creep model, the accuracy is estimated by comparison with Brandt's method for a basic cylinder geometry, showing a good agreement.