Numerical Homogenization for the Calculation of Eddy Current Losses in a Laminated Open Core

被引：0
作者：
Frljic, Stjepan [1 ]
Drandic, Ana [1 ]
Trkulja, Bojan [1 ]
机构：
[1] Univ Zagreb, Fac Elect Engn & Comp, Zagreb 10000, Croatia
来源：
IEEE ACCESS | 2024年 / 12卷
关键词：
Finite element analysis; Eddy currents; Magnetic flux; Lamination; Transformer cores; Numerical models; Computational modeling; Atmospheric modeling; Vectors; Three-dimensional displays; FEM; eddy currents; homogenization; lamination; open cores; transformers; STACKS;
D O I：
10.1109/ACCESS.2024.3486579
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Eddy currents are decoupled into narrow eddy currents, induced by the magnetic flux tangential to the laminations, and planar eddy currents, induced by the magnetic flux perpendicular to the laminations. A numerical homogenization procedure is presented for modeling narrow eddy currents, which is performed through computationally cheap 2D simulations in the preprocessing phase. This provides the equivalent magnetic reluctivity function of the core, taking into account the fringing effects of the eddy currents without introducing additional degrees of freedom. This allows for the utilization of a coarse mesh within the laminated core. The validity of the numerical homogenization procedure has been confirmed by comparison with the reference solution. Also, a 3D formulation for calculating losses due to eddy currents in an open core has been derived, which is compatible with the described numerical homogenization procedure.
引用
收藏
页码：169163 / 169169
页数：7
相关论文
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