摘要
本文从分析磁环的阻抗出发,推导出磁环抑制电磁干扰的理论表达式,分析了磁环形状、磁导率实部虚部对抑制效果的影响。结果表明电磁干扰抑制效果随磁环长度的变化快于随外径的变化,抑制效果的变化趋势与磁导率虚部的变化趋势相似。
The math expression of magnetic core suppressing electromagnetic interference was induced from calculating the impedance of magnetic core.Following,the influences of shape,complex permeability on suppressing electromagnetic interference were analyzed.Results showed that the suppression effect varied quickly with length more than out diameter and changed the same with imaginary permeability.
出处
《电气技术》
2008年第2期27-29,33,共4页
Electrical Engineering
基金
北京市自然科学基金资助项目(2062006)
北京市教委基金资助项目(01KJ-024)
关键词
电磁干扰
磁环
电磁兼容
electromagnetic interference
magnetic core
EMC
