High frequency model of common mode inductor for EMI analysis based on measurements

Author

Dehong, Liu ; Jiang Xanguo

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

fYear

2002

fDate

21-24 May 2002

Firstpage

462

Lastpage

465

Abstract

The high frequency characteristics of common mode (CM) inductors will affect their performance of conducted EMI suppression. This paper proposes a general procedure to construct a high frequency model of common mode inductors based on measurements in the frequency range from 9 kHz to 30 MHz. As an example, a lumped parameter high frequency model is given, in which CM inductance, leakage inductance, parasitic capacitance in winding and between windings, and ferrite resistance, etc, are described and determined based on measurements. Simulation demonstrates the model.

Keywords

electromagnetic interference; equivalent circuits; inductors; interference suppression; modelling; windings; 9 kHz to 30 MHz; EMI analysis; common mode inductance; common mode inductor; conducted EMI suppression; ferrite resistance; high frequency model; inductor HF characteristics; leakage inductance; lumped parameter HF model; winding parasitic capacitance; Electric variables measurement; Electromagnetic interference; Ferrites; Filters; Frequency measurement; Impedance; Inductance; Inductors; Parasitic capacitance; RLC circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2002 3rd International Symposium on

Print_ISBN

0-7803-7277-8

Type

conf

DOI

10.1109/ELMAGC.2002.1177470

Filename

1177470