A Fast Integral Equation J - φ Formulation for Superconducting Structures

被引:0
|
作者
Lucchini, Francesco [1 ]
Torchio, Riccardo [1 ]
Morandi, Antonio [2 ]
Dughiero, Fabrizio [1 ]
机构
[1] Univ Padua, Dept Ind Engn, I-35131 Padua, Italy
[2] Univ Bologna, Dept Elect Elect & Informat Engn, I-40136 Bologna, Italy
关键词
High-temperature superconductors; Integral equations; Sparse matrices; Eddy currents; Superconducting magnets; Magnetic domains; Indexes; Eddy current losses; fast Fourier transform (FFT); high-temperature superconductors (HTSs); hierarchical matrix; integral equation method (IEM); PEEC; TOOL;
D O I
10.1109/TASC.2024.3366189
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This article presents an integral equation method based on the current-potential (J - phi e) formulation, for the solution of the eddy currents problem in superconducting structures. Two efficient methods for storing and manipulating the fully populated matrices resulting from the discretization of the integral equation are proposed in this work. These approaches leverage hierarchical (H) matrices and the fast Fourier transform technique, tailored for voxelized structures. These techniques drastically reduce the computational cost of the numerical simulations. The proposed approach is compared to existing methods, as the H - phi(m) formulation, and is efficiently applied to calculate the power losses for a realistic high-temperature superconductor coil.
引用
收藏
页码:1 / 8
页数:8
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