Sudden Discharging and Overcurrent Simulations of REBCO Coils Coated With Conductive Epoxy Resin
Sudden Discharging and Overcurrent Simulations of REBCO Coils Coated With Conductive Epoxy Resin
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导电环氧树脂涂层REBCO线圈的突然放电和过流仿真
DOI：
10.1109/tasc.2021.3057839
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发表时间：
2021
影响因子：
1.8
通讯作者：
So Noguchi
中科院分区：
文献类型：
--
作者：
Takanobu Mato;So Noguchi
2011年，首次提出了无绝缘（NI）绕组技术。稀土钡铜氧化物（REBCO）饼线圈使用NI绕组技术是有希望产生一个稳定的磁场，因为NI绕组技术大大提高了热稳定性。当NI REBCO扁平线圈的一匝出现局部热点时，强制电流可以旁路到相邻匝中，以抑制焦耳热的产生。最近，已经研究和开发了不同类型的REBCO线圈，以通过从局部热点逸出电流来增强热稳定性。几年前，提出了一种上表面涂有导电环氧树脂的REBCO单饼线圈作为NI绕组技术的一种。通过过流试验证明了导电环氧树脂涂层（CERC）REBCO单饼线圈的高热稳定性。然而，线圈中的电流行为仍不清楚。因此，我们新开发了CERC REBCO饼形线圈的等效电路模型。对CERC REBCO饼形线圈进行了模拟突然放电和过流试验，并通过改变电阻参数来研究线圈的稳定性。
In 2011, a no-insulation (NI) winding technique was first proposed. Rare-Earth Barium Copper Oxide (REBCO) pancake coils using the NI winding technique are promising to generate an ultrahigh magnetic field, because the NI winding technique drastically enhances the thermal stability. When a local hot spot appears on a turn of the NI REBCO pancake coil, the enforced current can bypass into the adjacent turns to suppress the Joule heat generation. Recently, different types of REBCO coils to enhance the thermal stability by escaping the current flow from a local hot spot have been researched and developed. A few years ago, a REBCO single pancake coil whose upper surface was coated with conductive epoxy resin was proposed as one kind of NI winding techniques. The high thermal stability of conductive-epoxy-resin-coated (CERC) REBCO single pancake coil was demonstrated through an overcurrent test. However, the current behavior in the coil is still unclear. Therefore, we have newly developed an equivalent circuit model for CERC REBCO pancake coils. The sudden discharging and overcurrent tests were simulated for CERC REBCO pancake coils, and the resistance parameters were varied to investigate the coil stability.
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DOI：
--
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期刊：
影响因子：
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