高频电子电路用圆形截面环形磁芯中趋肤效应的分析  

Investigation on Skin- effect in toroidal core with circular cross section for high- frequency electronic circuit

作　　者：田莉[1] 

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070

出　　处：《自动化与仪器仪表》2017年第2期15-17,共3页Automation & Instrumentation

摘　　要：环形磁芯在高频电子电路中大量使用,随着激励频率的增加,趋肤效应变得越来越显著。本文基于麦克斯韦方程组推导得到的圆形截面环形磁芯中电场强度和磁场强度的解析计算公式,研究了趋肤效应随频率、磁导率的变化,计算结果表明频率越高趋肤效应越显著,磁导率越大趋肤效应越显著。The toroidal core has been widely used in electronic circuits. Skin effects in the core become more pronounced with energised frequency increasing. In this paper, based onformulas of the electrical field intensity and magnetic field intensity in toroidal core with circular cross section, effects of frequency and magnetic permeability on skin-effect have been studied. It is found that with the increase of the frequency and magnetic permeability skin effect becomes more significant.

关 键 词：环形磁芯 趋肤效应 电场强度 磁场强度 

分 类 号：TN405[电子电信—微电子学与固体电子学]