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Transactions: WSEAS TRANSACTIONS ON POWER SYSTEMS
Transactions ID Number: 31-440
Full Name: Fu-Chuang Chen
Position: Professor
Age: ON
Sex: Male
Address: Dept. of Electrical & Control Engineering, National Chiao-Tung University, Hsinchu City, Taiwan
Country: TAIWAN
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E-mail address: fcchen@cc.nctu.edu.tw
Other E-mails: jmscnn@yahoo.com
Title of the Paper: suppression of electromagnetic interference of DC-DC converters by chaos generators
Authors as they appear in the Paper: Fu-Chuang Chen and Po-Nien Shen
Email addresses of all the authors: fcchen@cc.nctu.edu.tw
Number of paper pages: 21
Abstract: 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.
Keywords: Chaos, Bifurcation, Boost converter, DC-DC converter, PSD, EMI, Current mode control
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