Axial Movement Effect on Voltage and Current Behaviors of Insert No-Insulation REBCO Pancake Coil
Axial Movement Effect on Voltage and Current Behaviors of Insert No-Insulation REBCO Pancake Coil
复制标题
DOI：
10.1109/tasc.2023.3265906
复制
发表时间：
2023
影响因子：
1.8
通讯作者：
Takanobu Mato;S. Noguchi
中科院分区：
文献类型：
--
作者：
Takanobu Mato;S. Noguchi
2017年，插入12层无绝缘（NI）稀土钡铜氧化物（REBCO）磁体用于产生45.5 T的世界纪录直流磁场。实验证明了其高的热稳定性;然而，NI REBCO扁平线圈面临机械问题。在这样的超高场中，强电磁力作用在插入REBCO线圈上，特别是在连续的正常状态转变期间。强力可能导致插入REBCO弹簧圈变形和移动。一些研究表明，一些变形和运动会影响线圈电压和屏蔽电流。然而，线圈在超高磁场中的运动还没有被研究过。插入线圈的移动会产生电压和电流，可能会降低线圈的稳定性。本文研究了在强轴向力作用下，考虑线圈运动时，有序正常态跃迁的电磁行为。电磁行为进行了模拟，使用径向细分的部分元件等效电路（PEEC）模型与机械运动分析相结合。
In 2017, an insert 12-stacked no-insulation (NI) rare-earth barium copper oxide (REBCO) magnet was used in the generation of a world-record DC magnetic field of 45.5 T. The experiment demonstrated its high thermal stability; however, NI REBCO pancake coils are facing mechanical problems. In such an ultra-high field, strong electromagnetic forces work on insert REBCO coils, in particular during sequential normal-state transitions. Strong forces may cause insert REBCO coils to deform and move. Some research revealed that some deformations and movements affected the coil voltages and the screening currents. Whereas, the coil movement in an ultra-high field has not been studied yet. Voltages and currents are induced by the movement of insert coils, and there is a possibility of degrading the coil stability. In this paper, we have investigated the electromagnetic behaviors during sequential normal-state transition, considering the coil movement due to strong axial forces. The electromagnetic behaviors are simulated using a radially-subdivided partial element equivalent circuit (PEEC) model coupled with mechanical movement analysis.