Due to the high isotropy and low AC losses, the multi-layer conductor on round core (CORC) cable is a good candidate for high field magnets, such as central solenoid magnets in fusion. Considering the difficulty in experimental measurement, numerical model is an effective way to illustrate the electromagnetic characteristics of the multi-layer CORC cable and provide further insights into its working performance. In this work, a 3D finite element model based on H formulation is proposed to simulate a CORC cable with as many as 18 layers considering electromagnetic coupling. The validity of the model has been verified by experimental results. Based on the proposed model, the DC transport current distribution characteristics and charge-discharge loss characteristics of multi-layer CORC cables wound in the same and opposite winding directions are investigated respectively. This work can provide an important reference for the design of multi-layer CORC cables for high-current or high-field application.

中文翻译：

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多层CORC电缆电磁特性数值研究

由于具有高各向同性和低交流损耗，圆芯多层导体 (CORC) 电缆非常适合高磁场磁体，例如聚变中的中央螺线管磁体。考虑到实验测量的困难，数值模型是说明多层CORC电缆电磁特性并进一步了解其工作性能的有效方法。在这项工作中，基于 3D 有限元模型 H 建议采用公式来模拟考虑电磁耦合的多达 18 层的 CORC 电缆。实验结果验证了模型的有效性。基于该模型，分别研究了同向和反向缠绕的多层CORC电缆的直流传输电流分布特性和充放电损耗特性。该工作可为大电流或高场应用的多层CORC电缆的设计提供重要参考。