Open AccessApplication of chaotic pulse width modulation control for suppressing electromagnetic interference in a half‐bridge converter
Author(s) -
Song Yuhong,
Niu Junying
Publication year - 2014
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2014.0178
Subject(s) - emi , pulse width modulation , electromagnetic interference , converters , inductor , transformer , electronic engineering , pulse frequency modulation , electrical engineering , chaotic , modulation (music) , computer science , engineering , physics , control theory (sociology) , pulse amplitude modulation , pulse (music) , voltage , acoustics , control (management) , artificial intelligence
It was proposed in the former research that chaos control can be used to suppress electromagnetic interference (EMI) in DC–DC converters. Analysis on a half‐bridge converter is detailed in this study. Here, the practical example of the power supply of personal computers is given to show that, with an external chaotic signal to a pulse width modulation control circuit, the proposed approach can reduce EMI by reducing the amplitudes of power signals such as transformer current and output inductor currents at multiples of fundamental frequency.