Second generation (2G) high-temperature superconductor (HTS) (RE)Ba2Cu3O x (REBCO) shows a great potential in building high field magnets beyond 23.5 T. The electromagnetic modelling is vital for the design of HTS magnet, however, this always suffers the challenge of huge computation for high field magnets with large number of turns. This study presents a novel electromagnetic modelling based on T-A formulation for REBCO magnets with thousands of turns. An equivalent turn method is proposed to reduce the number of turns in calculation, so that the computation cost can be reduced significantly, and meanwhile the key electromagnetic behaviour of HTS magnet can be simulated with enough accuracy. The ramping operation of a fully HTS magnet with 12,000 turns are analysed using both the original T-A model with actual turns and improved T-A model with equivalent turns. The two models show a good agreement on the key electromagnetic behaviours of the magnet: distribution of current density, magnetic fields, screen current induced field and magnetisation loss, so that this improved T-A model using equivalent turns is validated. The T-A modelling of REBCO magnet is a powerful tool for the electromagnetic analysis of industry-scale high field magnets.

中文翻译：

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使用TA配方对高温超导体（RE）Ba2Cu3Ox高场磁体进行电磁建模

第二代（2G）高温超导体（HTS）（RE）Ba2Cu3O x（REBCO）在制造超过23.5 T的高磁场磁体方面显示出巨大的潜力。电磁建模对于HTS磁体的设计至关重要，但是，这始终会受到影响对于具有大匝数的高磁场磁体而言，巨大的计算挑战。这项研究提出了一种基于TA公式的REBCO磁铁具有数千匝的新颖电磁模型。提出了一种等效匝数的方法来减少计算的匝数，从而可以大大降低计算成本，同时可以以足够的精度模拟高温超导磁体的关键电磁行为。具有12个全HTS磁体的斜坡操作 使用具有实际匝数的原始TA模型和具有等效匝数的改进TA模型分析000匝。这两个模型在磁体的关键电磁行为上表现出良好的一致性：电流密度，磁场，屏蔽电流感应场和磁化损耗的分布，因此可以验证这种使用等效匝数的改进TA模型。REBCO磁体的TA建模是工业规模高磁场磁体电磁分析的强大工具。