开关电源传导EMI抑制技术探讨  

Discussing Conductive EMI Suppression Technology for Switching Power Supply

作　　者：郭攀锋[1,2] 谭国俊[1,2] 赵艳萍[1,2] 张晓[1,2] 

机构地区：[1]中国矿业大学信电学院,徐州221008 [2]江苏省电力传动与自动控制工程技术研究中心,徐州221008

出　　处：《微波学报》2010年第S2期73-75,共3页Journal of Microwaves

摘　　要：主要介绍了开关电源的基本结构框图及它产生电磁干扰机理,阐述了开关电源电磁干扰主要是传导干扰。为了有效抑制传导EMI,首先分析了一般抑制传导干扰的技术——接地和滤波,然后分析讨论了传导电磁干扰测量技术LISN和集成EMI滤波器技术。设计了LISN上加共模和差模分离网络,并提出了集成EMI滤波器2级级联的理论。但文中的理论未在工程实验中验证,这是下步我们需要研究的。This paper introduced basic structure of Switching Power Supply(SPS) block diagram and the theory of its EMI. Besides,it described that EMI for SPS is mainly about conductive interference.In order to suppress conductive EMI,this article firstly analyzed the common method—grounding and filtering,then the measurement technology of conductive EMI—LISN and integrated EMI filter were analyzed and discussed.It is proposed that LISN was added to the separated network of common and differential mode,and designed the cascade theory of integrated EMI filter.But the theory of this paper was not verified on engineering experiment,so it is necessary to study on.

关 键 词：开关电源 传导EMI 共模 差模 集成EMI滤波器 

分 类 号：TN86[电子电信—信息与通信工程]