On approximating the frequency responses of the common-mode electromagnetic interference noise source

Author

Lo, Yu-Kang ; Song, Tzu-Hemg

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan

Volume

2

fYear

2003

fDate

17-20 Nov. 2003

Firstpage

1320

Abstract

The frequency responses of the common-mode (CM) electromagnetic interference (EMI) noise source for a switch-mode power supply is approximated in this paper. The amplitude of the equivalent Norton current source and the shunt admittance for the CM noise model are obtained by numerical analysis. The calculated frequency responses are valid almost in the entire measured frequency range. The CM filter design can be facilitated by using the obtained frequency responses. It is verified that the results are satisfactory.

Keywords

constant current sources; electric admittance; electromagnetic interference; frequency measurement; frequency response; numerical analysis; passive filters; switched mode power supplies; EMI noise source; Norton current source amplitude; common-mode electromagnetic interference; common-mode filter design; frequency range measurement; frequency responses approximation; numerical analysis; shunt admittance; switch-mode power supply; Admittance; Capacitors; Circuit noise; Delta modulation; Electromagnetic compatibility and interference; Electromagnetic interference; Equations; Filters; Frequency; Impedance;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth International Conference on

Print_ISBN

0-7803-7885-7

Type

conf

DOI

10.1109/PEDS.2003.1283171

Filename

1283171