The screening current induced in rare-earth barium copper oxide (REBCO) tape generates an unwanted irregular magnetic field. The screening current-induced field (SCIF) is a challenging issue for MRI, NMR, and accelerators magnet composed of REBCO coils. A few FEM-based simulation methods have been proposed to estimate the SCIF; however, they require a long computation time. Recently, we have proposed a simple SCIF computation method based on the self and mutual inductances of REBCO pancake coils and screening current radial paths on the top and bottom of pancake coils. The accuracy of the proposed method is not excellent; however, the computation time is quite short. In this paper, we report an equivalent circuit model that includes the self and mutual inductances of a REBCO pancake coil and screening current radial path. Moreover, with this proposed method, we can compute the SCIF of no-insulation (NI) REBCO pancake coils, which is not the case with the previously propos...

中文翻译：

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使用等效电路模型的REBCO煎饼线圈的简单筛选电流仿真方法

稀土钡铜氧化物（REBCO）胶带中感应的屏蔽电流会产生有害的不规则磁场。对于由REBCO线圈组成的MRI，NMR和加速器磁体，屏蔽电流感应场（SCIF）是一个具有挑战性的问题。已经提出了几种基于FEM的仿真方法来估计SCIF。但是，它们需要很长的计算时间。最近，我们提出了一种简单的SCIF计算方法，该方法基于REBCO煎饼线圈的自感和互感，并筛选了煎饼线圈顶部和底部的电流径向路径。所提方法的准确性不高。但是，计算时间很短。在本文中，我们报告了一个等效电路模型，该模型包括REBCO煎饼线圈的自感和互感以及屏蔽电流径向路径。此外，