重庆理工大学学报2024，Vol.38Issue(9)：201-209,9.DOI:10.3969/j.issn.1674-8425(z).2024.05.026
电驱系统高压无源EMI滤波器建模研究
Study on modeling of high voltage passive EMI filter in electric drive system
摘要
Abstract
In engineering, passive EMI filter is usually used to suppress electromagnetic interference ( EMI) .Accurate filter model is of great significance to the performance simulation and optimal design of the filter.In this paper, the frequency variation characteristics of magnetic ring are equivalent, and its influence on EMI filter performance is analyzed by full circuit method.First, the common-mode and differential-mode high-frequency equivalent circuit models of the magnetic ring are built, and the model parameters are obtained by genetic algorithm.Based on the impedance calculation formula, the high frequency circuit model of X and Y capacitors is built and the parasitic parameters of bus bar, grounding and PCB routing are extracted by finite element method.According to the principle of common-mode and differential-mode equivalence, a full-circuit model of 9kHz-60MHz frequency band is built, corresponding to the actual structure of the filter and containing both common-mode characteristics and differential-mode characteristics.Finally, the validity of the model is verified by insertion loss and port impedance.关键词
电磁兼容/EMI滤波器/遗传算法/插入损耗Key words
electromagnetic compatibility/EMI filter/genetic algorithm/insertion loss分类
信息技术与安全科学引用本文复制引用
廖兴林,陈秋伯,贾晋,杜伟民,龙云..电驱系统高压无源EMI滤波器建模研究[J].重庆理工大学学报,2024,38(9):201-209,9.基金项目
重庆教委项目(KJQN202301123) （KJQN202301123）
