传导电磁干扰噪声分离网络性能的理论研究-南京师范大学图书馆电子.PDF

( ) Vo l. 8 No. 3 第 8卷第 3期 南京师范大学学报 工程技术版 2008年 9 月 　 JOURNAL OF NANJ IN G NORMAL UN IV ER SITY ( EN GIN EER IN G AND TECHNOLO GY ED ITION ) 　 Sep , 2008 传导电磁干扰噪声分离网络性能的理论研究 赵 　阳 ,姜宁秋 ,孙 　焱 ,李世锦 ,陆婋泉 (南京师范大学 电气与自动化工程学院 , 江苏 南京 2 10042) [摘要 ] 　提出了传导性电磁干扰噪声分离器网络的基本要求 ,介绍了几种主要的基于硬件的分离网络结构. 利用 PSP ICE 仿 真软件重点对其中 3种网络的性能进行了研究. 首先对网络的基本性能进行了对比,进一步利用高频 LCR 仪提取变压器分布 参数 ,利用 P sp ice软件电路仿真分析原副边分布电容对网络性能的影响 ,最后讨论了输入阻抗对网络性能的影响. [关键词 ] 　电磁干扰 ,分离网络 ,共模噪声 ,差模噪声 ,插入损耗 ,抑制比 [中图分类号 ] TN 43　[文献标识码 ] A 　[文章编号 ](2008) 03000 105 Theoretica l Research on Capab ility of No ise Separa tor for Conducted EM I No ise Zhao Yang, J iang N ingq iu , Sun Yan , L i Sh ij in , Lu X iaoquan ( School of E lectrical and A utom ation Engineering, N anj ing Norm al Un iversity, N anj ing 2 10042 , Ch ina) A b stract: The ba sic requ irem ents of the conducted electrom agnetic interference no ise sep arator network are p ut forward, and several m ajor k ind s of sep arator network structu re based on hardware s are introduced. A n inve stigation on p erform ance of three network s is done by m ean s of simu lation software by PSP ICE. F irst, the basic p erform ances of the three network s are comp ared, fu rthermore, the cap acitive coup ling of tran sform er is m ea sured by h ighfrequency LCR , and an investigation on cap acitive coup ling influence done by PSP ICE software circu it sim u lation; F inally, the influence of inp ut imp edance on network p erform ance is discu ssed. Key words: electrom agnetic interference, noise sep arator, common mode no ise, differential mode noise, in sertion lo ss,