电源学报2024，Vol.22Issue(4)：301-308,8.DOI:10.13234/j.issn.2095-2805.2024.4.301
基于磁场分割法的EE型电感器磁路参数计算
Calculation of Magnetic Circuit Parameters of EE-type Inductor Based on Magnetic Field Division Method
摘要
Abstract
In the design of switching power supply inductors,the calculation of magnetic circuit parameters is of significance.For inductors with an open air gap in the column of EE-type iron cores,the total magnetic flux is divided into seven equivalent magnetic fluxes by using the method of magnetic field division through finite element simulation and theoretical analysis.The concept of invalid number of turns is proposed,and the analytical expression for equivalent area of air gap permeability is obtained on the basis of fully considering the influences of diffusion magnetic flux,bypass magnetic flux and uneven distribution of magnetic flux in the core.In addition,according to the equivalent magnetic circuit model,the analytical expression for inductance factor AL is obtained.The concept of inhomogeneity coefficient of magnetic flux density distribution is also proposed,and based on the maximum magnetic flux density per unit current,the analytic expression for saturation current IA is obtained.Afterwards,the magnetic circuit parameters are accurately calculated using Excel.Finally,the accuracy of the proposed formulas was verified by experimental measurements,providing a useful reference for designers.关键词
EE型磁芯电感器/磁饱和/有效磁路参数/最大磁密/磁密分布不均匀系数Key words
EE-type iron core inductor/magnetic saturation/effective magnetic circuit parameter/maximum magnetic flux density/inhomogeneity coefficient of magnetic flux density distribution1分类
动力与电气工程引用本文复制引用
陈庚,黄思仲,杨玉岗,林金城..基于磁场分割法的EE型电感器磁路参数计算[J].电源学报,2024,22(4):301-308,8.基金项目
山西省基础研究计划资助项目(20210302123171)This work is supported by Basic Research Project of Shanxi Province under the grant 20210302123171 （20210302123171）
