標題: | Suppression of Electromagnetic Interference of DC-DC Power Converters by Chaos Generators |
作者: | Chen, Fu-Chuang Shen, Po-Nien 電控工程研究所 Institute of Electrical and Control Engineering |
關鍵字: | chaos;bifurcation;boost converter;DC-DC converter;PSD;EMI;current mode control |
公開日期: | 1-一月-2010 |
摘要: | Power DC-DC converters are notorious sources of electromagnetic interference in electronic products; therefore, suppression of EMI is an important topic in the design of switch-mode power converters. Conventional EMI suppression methods may employ LC filters and metal shielding, but this can significantly increase cost, size, and weight. In this paper we propose a chaos-based method to reduce peak EMI magnitude and spread the energy to a wide range of frequencies. This method is to add a chaos-modulation clock to a converter maintaining in regular period state, in order to create chaotic behaviors in the converter. Our results show that this method is effective in suppressing EMI in DC-DC converters without much impact on the performance of converters. System stability is also analyzed and discussed. Moreover, compared with conventional methods, this method can be easily implemented in CMOS technology. |
URI: | http://hdl.handle.net/11536/146424 |
期刊: | 2010 20TH AUSTRALASIAN UNIVERSITIES POWER ENGINEERING CONFERENCE (AUPEC 2010): POWER QUALITY FOR THE 21ST CENTURY |
顯示於類別: | 會議論文 |