Estimation of maximum possible trapped field in superconducting permanent magnets in 2D and 3D
Estimation of maximum possible trapped field in superconducting permanent magnets in 2D and 3D
复制标题
2D 和 3D 超导永磁体中最大可能俘获场的估计
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
F. Grilli
中科院分区：
文献类型：
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作者：
V. Zermeño;A. Baskys;S. Zou;A. Patel;F. Grilli
超导磁带堆叠捕获大磁场的能力使它们成为制造紧凑尺寸和质量的强大永磁体的理想候选者。在实验上，几种技术被用于在给定的实际应用中捕获最大可能的场。然而，无论使用哪种磁化方法，给定超导磁体可以捕获的最大磁场都存在物理限制。这个限制是由几何设计、所用的特定超导材料和工作温度给出的。了解最大可能的捕获场对于设备设计很重要，因为它为磁轴承或旋转机械等应用提供了上限。在这项工作中，我们提出了一个集合的有限元法（FEM）模型，在2D和3D能够估计堆叠磁带超导磁体的最大捕获场。该模型计算速度快，可用于轻松进行参数研究。对于正方形堆栈磁带磁铁的情况下，各种尺寸被认为是和他们的估计最大捕获场与实验结果进行比较。
The ability of stacks of superconducting tapes to trap large magnetic fields makes them ideal candidates for creating powerful permanent magnets of compact size and mass. Experimentally, several techniques are used to trap the maximum possible field in a given practical application. However, regardless of the magnetization method used, there is a physical limit to the maximum magnetic field that a given superconducting magnet can trap. This limit is given by the geometric design, the particular superconducting material used and the temperature of operation. Knowing the maximum possible trapped field is important for device design as it provides an upper limit for applications such as magnetic bearings or rotating machinery. In this work we present a collection of finite element method (FEM) models in 2D and 3D capable of estimating the maximum trapped field of stacked tape superconducting magnets. The models are computationally fast and can be used to perform parametric studies with ease. For the case of square stacks tape magnets, various sizes are considered and their estimated maximum trapped field is compared with experimental results.