Unbalanced radial current flow simulation of no-insulation REBCO pancake coils during normal state transition
Unbalanced radial current flow simulation of no-insulation REBCO pancake coils during normal state transition
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非绝缘 REBCO 扁平线圈正常状态转换期间的不平衡径向电流仿真
DOI：
10.1088/1361-6668/aba79e
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发表时间：
2020
影响因子：
3.6
通讯作者：
Noguchi So
中科院分区：
文献类型：
--
作者：
Kurauchi Thomas;Noguchi So
无绝缘(NI)绕组技术通过避免烧毁和热失控，极大地提高了REBCO(REBa2Cu3Ox，RE=稀土)煎饼线圈的热稳定性。NiREBCO薄片线圈中复杂的电学行为产生了错综复杂的力学行为，以至于一些期刊论文报道了高场NI REBCO薄片线圈在淬火过程中被机械损坏。为了将NiREBCO磁体应用于实际的商业用途，必须通过实验和模拟来详细地了解NiREBCO薄饼线圈的电磁和机械行为。为了阐明NI REBCO煎饼线圈的电学行为，已经提出了几种模拟方法，例如简单的RL并联等效电路。在这些以前的模型中，沿着煎饼线圈的顶部和底部的径向电流路径被表示为一个电流电路路径。然而，由于一个煎饼线圈底部的径向电流路径实际上与下一个最低线圈的顶部的径向电流路径非常接近，这两个路径之间出现了感应行为。仿真结果表明，一个煎饼线圈在失超过程中，其顶部和底部携带不同大小的径向电流的概率较大。
The no-insulation (NI) winding technique greatly enhances the thermal stability of REBCO (REBa 2 Cu 3 O x, RE= Rare Earth) pancake coils by avoiding burn-out and thermal runaway. The complicated electrical behaviors in NI REBCO pancake coils produce convoluted mechanical behaviors, so that some journal papers reported that high-field NI REBCO pancake coils were mechanically damaged during quench. To apply NI REBCO magnets for practical commercial use, it is important to understand the electromagnetic and mechanical behaviors of NI REBCO pancake coils in detail with both experiments and simulations. To clarify the electrical behaviors, a few simulation methods for NI REBCO pancake coils have been proposed; such as a simple RL parallel equivalent circuit. In these previous models, the radial current paths along the top and bottom of the pancake coils are represented as one current circuit path. However, since the radial current path of the bottom of one pancake coil is actually very close to that of the top of the next lowest coil, inductive behavior between these two paths appears. The simulation results show a probability that different amounts of radial current on the top and bottom of one pancake coil are carried during quench.
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影响因子：
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作者：
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DOI：
--
发表时间：
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期刊：
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