An evaluation of the spectral characteristics of switching converters with chaotic carrier-frequency modulation

Author

Tse, K.K. ; Ng, Raymond Wai-Man ; Chung, Henry Shu-Hung ; Hui, S. Y Ron

Volume

50

Issue

1

fYear

2003

fDate

2/1/2003 12:00:00 AM

Firstpage

171

Lastpage

182

Abstract

This paper presents an evaluation of the spectral characteristics of switching converters with a chaotic carrier-frequency modulation scheme (CCFMS). By incorporating a Chua´s circuit (CC) into the pulsewidth modulator for driving the switches, three modulation schemes, including the standard pulsewidth modulation scheme, periodic carrier-frequency modulation scheme, and CCFMS, can be realized with the CC in equilibrium, limit cycle, and chaos, respectively. The property of frequency spreading in CCFMS is studied by using a statistical analysis method. The developed model is applied to formulate the power spectral densities of the input current and the output voltage of the three basic DC/DC converters under CCFMS. Theoretical predictions are verified with experimental measurements.

Keywords

DC-DC power convertors; chaos; frequency modulation; spectral analysis; switching convertors; Chua circuit; DC/DC converters; chaos; chaotic carrier-frequency modulation; chaotic switching techniques; equilibrium; frequency spreading; input current; limit cycle; modulation schemes; output voltage; periodic carrier-frequency modulation; power spectral densities; pulsewidth modulation; pulsewidth modulator; random switching techniques; spectral characteristics; statistical analysis method; switching circuits; switching converters; Chaos; Frequency; Limit-cycles; Pulse circuits; Pulse modulation; Space vector pulse width modulation; Statistical analysis; Switches; Switching circuits; Switching converters;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2002.807659

Filename

1174073