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Experimental Comparison of EMC Enhancement in Random and Chaos-Based Timing Signal Modulation Techniques

By BALESTRA M., CALLEGARI S, ROVATTI R and SETTI G

Abstract

This paper provides an experimental comparison\ud of the EMI reduction that can be achieved in\ud power converters whose behavior is controlled by means\ud of suitably modulated timing signals. Strategies for the\ud synthesis of low-EMI switching control waveforms by\ud means of random processes and chaos based modulation\ud techniques are reviewed and their performance in terms of\ud reduction in the power density spectrum peaks is reported.\ud Finally experimental measure of the waveforms applied\ud to a DC/DC (buck) converter are shown confirming the\ud advantages of the chaos-based modulation methodology\ud with respect to EMI compliance

Publisher: EMC2002
Year: 2002
OAI identifier: oai:iris.unife.it:11392/1192461
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