摘要
应用时域有限差分(FDTD)法对电磁脉冲作用下,导线贯通屏蔽箱体内电路上的耦合干扰电流进行了建模和仿真。结果表明,当有导线穿过屏蔽箱体时,箱体内电路上的耦合干扰电流会显著增强,贯通导线的长度、电磁干扰脉冲的入射角度对箱体内电路上的干扰电流有着重要影响。并提出了用开口金属环抑制这种干扰电流的简便方法。
The finite difference time domain (FDTD) method was used to simulate the electromagnetic pulse (EMP) induced current in circuits inside a shielding box by a wire penetrated with an aperture. Results show that penetrative wire can make the induced current in circuits inside the shielding box increase greatly. The wire's length, incidence angle of the electromagnetic pulse (EMP) have significant effect on the electromagnetic interference (EMI) current in the box. A simple method was proposed using a metal ferrule for suppressing the interference current.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2007年第17期3891-3893,3954,共4页
Journal of System Simulation
基金
重庆市自然科学基金重点项目(CSTC
2006BA6015)
关键词
时域有限差分法
贯通导线
屏蔽箱体
共模干扰
电磁兼容
FDTD method
penetrated wire
shielding box
common mode interference
electromagnetic compatibility