开关电源变换器传导电磁干扰噪声源内阻抗优化提取方法  

Optimization Method of Conducted EMI Noise Source Impedance Extraction in SMPS

作　　者：封志明[1] 赵品彰 赵波[1] 董颖华[2] 

机构地区：[1]江苏省计量科学研究院,南京210007 [2]中国电力科学研究院,南京210003

出　　处：《数据采集与处理》2012年第2期268-272,共5页Journal of Data Acquisition and Processing

基　　金：江苏省自然科学基金(BK2008429)资助项目;国家质监总局(T2009-TSQTS-0061)资助项目;江苏省地方标准(苏质监发[2010]137号-8)资助项目

摘　　要：针对开关电源变换器(Switch mode power supply,SMPS)传导电磁干扰噪声源内阻抗提取问题,本文基于传统电压插入损耗法提出了一种功率插入损耗噪声源内阻抗提取方法。根据测试系统在被测噪声源加载前后功率损耗原理,通过校准测试系统自身的功率插入损耗,得到被测设备噪声源内阻抗。本文方法无需预估被测设备噪声源内阻抗,测试方法简便。理论研究与实验结果表明,本文方法进行快速、有效的提取被测设备噪声源内阻抗,从而为EMI滤波器设计提供理论依据。To optimize the extraction method of conducted electromagnetic interference （EMI） noise source impedance for switch mode power supply （SMPS）, the power method is proposed to extract conducted EMI noise source impedance, based on the voltage inserting loss method. The noise source impedance can be extracted by calibrating the self-power inserting loss of the test system according to the noise source before and after loading. The estimated noise source impedance is unnecessary in the proposed method. Therefore, the testing process can be simplified. Theoretical and experimental results show that the noise source impedance can be quickly and effectively extracted by the method, thus providing a theoretical basis for EMI filter design.

关 键 词：电磁兼容 噪声源内阻抗 插入损耗 电力电子 传导电磁干扰 

分 类 号：TM306[电气工程—电机]