Title :
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
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;
Conference_Titel :
Electromagnetic Compatibility, 2002 3rd International Symposium on
Print_ISBN :
0-7803-7277-8
DOI :
10.1109/ELMAGC.2002.1177470
