用T-A均匀模型研究HTS线圈的屏蔽电流感应场和场漂移
Screening Current-Induced Field and Field Drift Study in HTS coils using T-A homogenous model
摘要：
第二代（2G）高温超导体（HTS）带材的出现促进了HTS磁体在诸如NMR、MRI和高场磁体等领域的应用的发展。屏蔽电流感应场和场漂移是阻碍高温超导带材在上述领域应用的两个主要问题。这两个问题都是由屏蔽电流引起的，因此有必要具有能够估计此类现象的建模策略。到目前为止，H公式一直是最成功和最常用的方法来模拟中型系统（数百磁带）。然而，它的应用程序的大规模系统仍然受到过多的计算时间和内存需求。均匀化和多尺度策略已成功地实现，以提高计算效率。在这方面的贡献，我们表明，使用均匀化技术与最近开发的T-A制定允许减少计算时间和内存量的点，大规模系统的缓慢斜坡周期的实时模拟是可能的。T-A齐次模型还允许使用数值模拟系统地调查屏蔽电流。
英文摘要：
The emergence of second generation (2G) high-temperature superconductor (HTS) tapes has favored the development of HTS magnets for their applications in areas such as NMR, MRI and high field magnets. The screening current-induced field and the field drift are two major problems hindering the use of HTS tapes in the mentioned areas. Both problems are caused by the screening current, then it is necessary to have a modeling strategy capable to estimate such phenomena. Thus far, the H formulation has been the most successful and used approach to model medium-size systems (hundreds of tapes). However, its application to large-scale systems is still impaired by excessive computation times and memory requirements. Homogenization and multi-scaling strategies have been successfully implemented to increase the computational efficiency. In this contribution, we show that using the homogenization technique with the recently developed T-A formulation allows reducing the computation time and the amount of memory up to the point that real-time simulations of slow ramping cycles of large-scale systems are possible. The T-A homogeneous model also allows systematically investigating the screening current using numerical simulations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
