中国电机工程学报2011，Vol.31Issue(3)：132-137,6.
基于频变参数辨识的共模扼流圈集中参数模型
Lumped Parameters Modeling of Common Mode Chokes Based on Frequency-varying Parameters Identification
摘要
Abstract
In order to overcome the disadvantages in the impedance measurement which is influenced by parasitic parameters and nonideal characters of conductor lines as well as no way to perform the frequency-varying parameters, this paper presents high frequency modeling method of common mode chokes based on frequency-varying parameters. A high frequency lumped parameter model was built, which included winding inductances, leakage inductances, parasitic capacitances between and in the windings, equivalent resistances of magnetic cores and copper losses. On the basis of traditional least square method, the forgetting factor and rectangular window were introduced to estimate the frequency-varying parameters. The convergence in square mean of this method was also proved. The proposed modeling method is proved rationally by comparing the experimental result with simulation result between 150 kHz～ 30MHz. The restraining effects are best at the resonance frequency of the common mode choke. And an experiment is conducted to verify the conclusion by restraining the electromagnetic interference produced by a switching circuit.关键词
共模扼流圈/集中参数模型/频变参数/遗忘因子/矩形窗/电磁干扰分类
信息技术与安全科学引用本文复制引用
刘胜,张玉廷,于大泳..基于频变参数辨识的共模扼流圈集中参数模型[J].中国电机工程学报,2011,31(3):132-137,6.基金项目
国家自然科学基金项目(60704004) （60704004）
中国博士后科学基金资助项目(20080430888). （20080430888）
