Modeling of Trapped Fields by Stacked (RE)BCO Tape Using Angular Transversal Field Dependence
Modeling of Trapped Fields by Stacked (RE)BCO Tape Using Angular Transversal Field Dependence
复制标题
使用角度横向场相关性对堆叠 (RE)BCO 胶带捕获场进行建模
DOI：
10.1109/tasc.2016.2528992
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发表时间：
2016
影响因子：
1.8
通讯作者：
B. Glowacki
中科院分区：
文献类型：
--
作者：
A. Baskys;A. Patel;S. Hopkins;B. Glowacki
超导(RE)BCO带材作为超导块材的潜在替代品正变得越来越受欢迎。这在一定程度上是由于起始材料的多功能性和一致性，允许更确定地预测场分布和震级。然而，大多数俘获场磁体的有限元模型没有考虑临界电流和n值与外加磁场角度的关系等参数，导致只能得到定性的建模结果。结合更多的超导材料和热学性质的数据，可以得到更多的定量结果。这些模型可以作为大多数几何问题的起点，也可以作为捕获场和当前输运模拟问题的起点。使用H公式建立了一组带材的有限元模型，其中包含了测角临界电流和n值测量。将模拟结果与不同高度烟囱的现场冷却实验结果进行了比较。实验结果与建模结果吻合较好。
Stacks of superconducting (RE)BCO tape are gaining popularity as a potential alternative for superconducting bulks for trapped field applications. This is partly due to versatility and uniformity of the starting material, allowing for more deterministic prediction of field profile and magnitude. However, most FEM models of trapped field magnets do not incorporate parameters such as critical current and n-value dependence on the angle of applied magnetic field, leading to only qualitative modeling results. More quantitative results can be obtained from incorporating more data for superconductivity and thermal properties of the material. Such models can be used as a starting point for most geometries and both trapped field and current transport modeling problems. An FEM model of a stack of tapes was constructed using the H formulation, incorporating goniometric critical current and n-value measurements. The modeling results were compared to field cooling experiments for stacks of different heights. The experiment and modeling show good agreement.