摘要
共模扼流圈的高频特征极大地影响了电磁干扰(EMI)滤波器抑制传导EMI噪声的性能.为了准确地评估和预测EMI滤波器的性能,提出了一种基于150 kHz^30 MHz阻抗测量的共模扼流圈高频建模方法,建立了可用于EMI性能分析的差模模型和共模模型.采用Foster网络来表示共模模型参数随频率而变化的特征,并且通过一个实例给出了共模扼流圈的高频集总参数模型.通过比较共模扼流圈插入损耗的测量结果和仿真结果,证实了所提出的共模扼流圈高频建模方法的可行性.
The high frequency parasitic parameters of common mode(CM) choke significantly influence the performance of electromagnetic interference(EMI) filter for conducted EMI suppression.In order to accurately estimate and predict the performance of EMI filter,a procedure was presented to build high frequency CM model and differential mode(DM) model for CM chokes from impedances measurement in the range of 150 kHz-30 MHz.Foster network was used to characterize the change of the parameters of CM model with frequency...
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2007年第11期1845-1849,1856,共6页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目(50077020)
关键词
共模扼流圈
共模电感
差模电感
寄生电容
Foster网络
common mode（CM） choke
common mode（CM） inductance
differential mode（DM） inductance
parasitic capacitance
Foster network
