计及电磁行为特性的共模EMI滤波电感解析建模及优化设计  

Analytical Modelling and Optimal Design of Common Mode Inductors Taking into Account Electromagnetic Behavioral Dharacteristics

作　　者：李阳 刘志强 徐宏争 郭纯海 袁超[2] 李桥 LI Yang;LIU Zhiqiang;XU Hongzheng;GUO Chunhai;YUAN Chao;LI Qiao(Dali Bureau of Ultra High Voltage Transmission Company,China Southern Power Grid,Dali 671000,China;College of Electrical and Information Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司大理局,云南大理671000 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《电工技术》2025年第3期24-28,32,共6页Electric Engineering

基　　金：中国南方电网有限责任公司创新项目(编号CGYKJXM20220352)。

摘　　要：电磁干扰(EMI)滤波器在保证电力电子装置的可靠性方面起着至关重要的作用。其中,共模EMI滤波电感是最重要的元件之一。对共模EMI滤波电感在高频工作条件下的精确建模能够帮助更好地设计滤波器以提升其性能,并减小体积。针对常用解析模型的局限性,建立了一个更全面、更精确的解析模型,通过全面考虑材料因素以及共模EMI滤波电感的几何特性,并解释了所提模型背后的物理意义,以解决传统解析模型由于过于简单的几何假设以及对材料因素的忽略而带来的误差。此外,对两种方法进行了比较,并通过在三种不同情况下的有限元仿真和实验验证了所提模型的有效性。最后,提出了一种共模EMI滤波电感的高频优化设计方法,以提升其高频性能。Electromagnetic interference(EMI)filters play a vital role in ensuring the reliability of power electronics.One of the most important components is the common mode EMI filter inductor.Accurate modelling of common-mode EMI filter inductors under high-frequency operating conditions can help to better design the filters to improve their performance and reduce their size.In this paper,the limitations of the commonly used analytical models are pointed out,and a more comprehensive and accurate analytical model is proposed to solve the errors of the traditional analytical models due to the oversimplified geometrical assumptions and the neglect of the material factors by considering the material factors as well as the geometrical characteristics of the common-mode inductors and by explaining the physical meanings behind the proposed model in detail.In addition,this paper compares the two methods and validates the proposed model through finite element simulations and experiments in several different cases.Finally,this paper proposes a high-frequency optimal design method for common-mode EMI filter inductors to enhance their high-frequency performance.

关 键 词：共模EMI滤波电感 高频建模 电磁分析 

分 类 号：TM614[电气工程—电力系统及自动化]