江苏大学学报（自然科学版）2012，Vol.33Issue(1)：71-76,6.DOI:10.3969/j.issn.1671-7775.2012.01.015
基于插入损耗法的噪声源内阻抗建模及误差分析
Noise source impedance modeling and measurement error analysis based on insertion loss method
摘要
Abstract
In order to solve the impedance matching problem for conducted EMI filter designing of artificial mains network (AMN) impedance, noise source impedance, load impedance and EMI filter impedance, the error theoretical model and equivalent circuits of insertion loss (IL) method were established. The measurement accuracy and system error of series and parallel IL methods were analyzed to provide improved test condition and methods. Series IL method was used when the measured impedance was much larger than load impedance. Parallel IL method was utilized when the measured impedance was much smaller than load impedance. The load impedance was altered when the measured impedance approximately equaled to load impedance. Theoretical analysis and experimental results show that the proposed method can extract EMI noise impedance effectively in certain range, where it can also realize the maximum impedance adapter between noise impedance and EMI filter. The proposed method has good validity for EMI filter design and conducted EMI noise suppression.关键词
电磁兼容/电磁干扰/插入损耗/等效电路/噪声抑制Key words
electromagnetic compatibility/ electromagnetic interference/ insertion losses/ equivalent circuits/ noise reduction分类
信息技术与安全科学引用本文复制引用
史国生,赵阳,颜伟,董颖华,朱志毅..基于插入损耗法的噪声源内阻抗建模及误差分析[J].江苏大学学报（自然科学版）,2012,33(1):71-76,6.基金项目
江苏省自然科学基金资助项目(BK2008429) （BK2008429）
国家质监总局项目(T2009-TSQTS-0061) （T2009-TSQTS-0061）
