Supplementary materials: Round and tubular wire skin effect modeling and usage SPICE as Maxwell's equations solver

This work presents a sub-model of round or tubular wire with skin effect simulation. The model is based on numerical solving Maxwell's equations, using a time-domain simulator as a numerical analysis tool. The geometry of round wire is divided by the number of concentric tubes of variable thickness. Finite difference numerical equations for field and current density are adapted for the time-domain simulator. Voltage drop across the wire is calculated using current density in the outermost layer surface and external inductance of the wire. A simple software has been created to automate the model creation. Simulation results are presented for time and frequency domains.

本研究提出了一种圆线或管状线的子模型，其中包含了对皮肤效应的模拟。该模型基于对麦克斯韦方程的数值求解，利用时域模拟器作为数值分析工具。圆线几何形状通过不同厚度的同心管数量进行划分。针对场和电流密度的有限差分数值方程被适配以适应时域模拟器。通过最外层表面电流密度和线的外部电感计算线上的电压降。一款简易软件已被创建以自动化模型构建。时间域和频率域的仿真结果得到展示。