论文标题
Rebco堆栈的结束连接的耦合损失：2D建模和测量
Coupling loss at the end connections of REBCO stacks: 2D modelling and measurement
论文作者
论文摘要
在高功率密度超导电动机中，通常将超导胶带堆叠并在端子上连接在一起以提高当前容量。当将平行的正弦磁场应用于该部分耦合的堆栈上时，诱导耦合电流并导致额外的耦合损耗。通常需要3D建模来计算耦合损耗，但需要太多的计算资源和时间。在本文中，开发了通过最小电磁熵产生（MEMEP）方法进行数值2D建模，以加快计算。提出的MEMEP模型表现出良好的准确性和能力，可以将磁带之间的现实阻力与大量的网格元素耦合损耗计算，该元素同意测量。Thanks对模型，对耦合损失的系统性研究，对频率依赖性，频率依赖性，抵抗性，抵抗性依赖性和长度依赖性和依赖性和讨论的耦合损失呈现。结果揭示了耦合损耗的特征，耦合损耗是具有多磁带导体（例如电动机的定子或转子绕组）的非常有用的设备。
In high power density superconducting motors, superconducting tapes are usually stacked and connected together at terminals to improve the current capacity. When a parallel sinusoidal magnetic field is applied on this partially coupled stack, the coupling current is induced and causes additional coupling loss. Usually 3D modeling is needed to calculate the coupling loss but it takes too much computing resource and time. In this paper, a numerical 2D modeling by minimum electromagnetic entropy production (MEMEP) method is developed to speed up the calculation. The presented MEMEP model shows good accuracy and the capability to take the realistic resistance between tapes into account for coupling loss calculation with a high number of mesh element, which agrees to measurements.Thanks to the model, a systemic study of coupling loss on amplitude-dependence, frequency-dependence, resistance-dependence, and length-dependence, is presented and discussed. The results reveal the features of coupling loss which is very helpful devices with multi-tape conductors, such as the stator or rotor windings of motors.
