Suppressing EMI of Switching Converters Using Self-Excitation-Chaos

Author

Qingnan, Li ; Rui, Xiong

Author_Institution

Huazhong Univ. of Sci. & Technol., Wuhan

fYear

2007

fDate

23-26 Oct. 2007

Firstpage

198

Lastpage

201

Abstract

A method of EMI reduction using spectral modification through self-excitation-chaos is proposed. We derived a second-order S-switching iterative map describing the dynamics of simple feedback buck switching regulator operating in continuous mode. Analysis of this map shows that chaos and bifurcations may occur at certain values of the input voltage. By making the converter operating in chaos, the simulation results demonstrate that a reduction of spectral peak and consequent spreading of the spectrum can be shown, and it will hardly influence to output voltage ripples.

Keywords

bifurcation; chaos; electromagnetic interference; interference suppression; iterative methods; switching convertors; EMI; bifurcation; electromagnetic interference suppression; second-order S-switching iterative map; self-excitation-chaos; simple feedback buck switching regulator; spectral modification; switching converters; Bifurcation; Chaotic communication; Electromagnetic interference; Filters; Frequency; Inductors; Manufacturing; Switches; Switching converters; Voltage; Electromagnetic interference; Self-Excitation-Chaos; Spectral modification;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2007. EMC 2007. International Symposium on

Conference_Location

Qingdao

Print_ISBN

978-1-4244-1371-3

Electronic_ISBN

978-1-4244-1372-0

Type

conf

DOI

10.1109/ELMAGC.2007.4413465

Filename

4413465