静电放电电磁脉冲辐射场数值建模与仿真  

Numerical Modeling and Simulation of Radiation Field of Electrostatic Discharge Electromagnetic Pulse

作　　者：雷晓勇[1] 刘尚合[1] 王雷[1] 贾明捷[2] 毕增军[3] 李广强[3] 

机构地区：[1]军械工程学院静电与电磁防护研究所,石家庄050003 [2]北京航空工程技术中心,北京100076 [3]空军雷达学院,武汉430019

出　　处：《高电压技术》2010年第11期2749-2753,共5页High Voltage Engineering

基　　金：国家自然科学基金(10927506)~~

摘　　要：针对静电放电(ESD)电磁脉冲测试及其防护这一静电研究领域的难点问题,利用时域有限差分法并采用电偶极子辐射模式建立了ESD电磁脉冲辐射场的数值模型。在分析了拟合IEC 61000—4—2标准规定的ESD电流波形的5种数值模型后,根据t=0时刻电流值和电流导数为0的ESD电流要求,选择脉冲3项式作为ESD电流表达式进行仿真计算。采用4 kV放电电压作为脉冲源,通过仿真计算得出相对辐射源3个位置处的电磁场分量Ex和Hx。计算结果表明,ESD电磁脉冲辐射场在自由空间的时域特点是脉冲具有极快上升沿、幅度变化剧烈且衰减较快。仿真结果为ESD电磁脉冲测试及其防护提供理论支撑。It is difficult to perform the electrostatic electromagnetic pulse test and protection in the electrostatic research field.We established an electromagnetic pulse radiation field numerical model of the electrostatic discharge,and adopted the dipole mode for radiation.After analyzing and comparing five kinds of numerical descriptions of electrostatic discharge current waveform for the contact mode,the simulation was performed based on the trinomial of the pulse function according to the continuity of the first derivative at t=0 and are time-integrable.The discharge current of the 4 kV voltage was selected as pulse current source,after the simulation,the electric field Ex and the magnetic field Hx were calculated in the three different positions away from the source.Results show that the time-domain characteristics of the ESD electromagnetic pulse radiation field in free space are as follows： fast rise time,quick change of amplitude,and quick attenuation.The simulation results can provide a theoretic support for the ESD EMP test and protection.

关 键 词：静电放电(ESD) 电磁脉冲 时域有限差分 电偶极子 脉冲电流 辐射场 

分 类 号：O441[理学—电磁学]