PEEC modelling of toroidal magnetic inductor in frequency domain
PEEC modelling of toroidal magnetic inductor in frequency domain
复制标题
环形磁电感器频域 PEEC 建模
DOI：
10.1109/ipec.2010.5543383
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
J. Kolar
中科院分区：
文献类型：
--
作者：
I. Kovacevic;A. Musing;J. Kolar
本文开发了带有磁芯的环形线圈的详细 3D 部分元件等效电路 (PEEC) 模型。存在磁性材料时的 PEEC 问题通过磁流/电荷方法在频域中解决，即用自由空间中等效虚拟磁流/电荷的分布替换磁化物体。仿真参数是绕组和磁芯特性。磁导率要么取自数据表，要么通过测量串联等效阻抗来确定。为了验证所提出的 3D PEEC 模型，对几种绕组布置和磁芯材料的计算和测量阻抗值进行了比较。在第一谐振频率之前，仿真和测量之间表现出良好的一致性。对于更高的频率，需要更准确的磁导率规格，并且必须考虑磁芯介电特性。
In this paper, a detailed 3D Partial Element Equivalent Circuit (PEEC) model of a toroidal coil with a magnetic core is developed. The PEEC problem in the presence of magnetic materials is solved in the frequency domain via a magnetic current/charge approach, i.e. replacing the magnetized objects by a distribution of equivalent fictitious magnetic currents/charges in free space. The simulation parameters are the winding and magnetic core properties. The permeability is either taken from datasheets or determined by measuring the series equivalent impedance. To verify the proposed 3D PEEC model, calculated and measured impedance values are compared for several winding arrangements and core materials. A good agreement between simulation and measurements is presented up to the first resonant frequency. For higher frequencies, a more accurate specification of the permeability is required, as well as the core dielectric property has to be considered.