新型传导EMI滤波器的设计研究  

The Research on the Design of the New Conducted EMI Filter

作　　者：刘勇[1] 赵阳[1] 肖家旺[1] 张宇环[1] 郭青龙[1] 

机构地区：[1]南京师范大学电气与自动化工程学院,江苏南京210042

出　　处：《南京师范大学学报（工程技术版）》2011年第4期12-15,共4页Journal of Nanjing Normal University(Engineering and Technology Edition)

基　　金：江苏省自然科学基金(BK2011789);江苏省高校科研成果产业化推进项目(JHB2011-20)

摘　　要：主要对受空间电磁场影响的新型传导干扰的抑制进行了研究,具体分析了普通滤波器和传导EMI滤波器的区别.在分析典型滤波器的基础上,提出了新型传导EMI滤波器,分析研究了它的结构和抑制原理,该滤波器能够较好地抑制新型传导干扰噪声.针对某型刷卡机的新型传导干扰问题,分别采用两种原理的EMI滤波器对其进行了抑制试验,试验结果较好地验证了新型EMI滤波器对新型传导干扰噪声抑制的有效性.The suppression of the new conducted EMI noise which is affected by electromagnetic field is studied in this paper. The difference of normal filters and EMI filters is analyzed specifically, and on the basis of analysis of the typical filter, the new model of conducted EMI filter is proposed, of which the structure and suppression principle are analyzed, and this filter can suppress the new conducted EMI noise. In the end, as for the new conducted noise of a certain type of credit card machines, both of the two kinds of EMI filters are applied to suppress its conducted noise. The result of ex- periments shows that the new model EMI filter proposed in this paper can well suppress the new conducted EMI noise.

关 键 词：空间电磁场 传导干扰噪声 EMI滤波器 抑制 新型传导干扰 

分 类 号：TN713[电子电信—电路与系统]