一种测量软磁铁氧体磁芯磁导率的方法  

Method for Measuring Permeability of Ferrite Core

作　　者：张近民[1] 丁印福[1] 王立欣[1] 

机构地区：[1]哈尔滨工业大学电气工程系,哈尔滨150001

出　　处：《电测与仪表》2009年第6期26-29,67,共5页Electrical Measurement & Instrumentation

摘　　要：为了便于对共模扼流圈进行设计和仿真,需要准确掌握磁芯材料的磁导率。本文建立了一种电感高频等效模型,使用此模型在已知电感器实部和虚部的情况下测得两种软磁铁氧体磁芯的相对磁导率,最后通过此模型对插入损耗计算值与实际测量值的对比,证明其具有很高的准确性,并分析了误差产生的原因。由于此模型中的所有参数都用几何尺寸测量的方法得到,简单易行,有一定的工程利用价值。In order to design and simulate the common mode choke, an accurate permeability of core material is required. A high-frequency equivalent model of inductor is set up, and the relative permeability of two ferrite cores is measured. Finally insert loss of the calculated values is compared with the actual measurement, high accuracy is demonstrated, and the error is analyzed. Because all parameters are from geometry measurement, the works have a certain value.

关 键 词：磁导率 共模扼流圈 高频模型 

分 类 号：TM933[电气工程—电力电子与电力传动]