Application of chaotic pulse width modulation control for suppressing electromagnetic interference in a half-bridge converter

The Journal of Engineering

Yuhong Song¹  Junying Niu² 

[1] Faculty of Electronic and Information Engineering, Shunde Polytechnic, Foshan, People's Republic of China

关键词: electromagnetic interference suppression;    external chaotic signal;    EMI reduction;    personal computer power supply;    chaotic pulse width modulation control circuit;    output inductor currents;    half-bridge converter;    power signal amplitude reduction;    DC-DC converters;    transformer current;   

DOI  :  10.1049/joe.2014.0178

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

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.

【 授权许可】

CC BY