Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (9): 1-5.

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Chaotic Quantitative Calculation via Eigenvector Method and EM I Suppression of Boost Converter

Zhang Bo  Li Hong   

  1. College of Electric Power,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-10-15 Online:2005-09-25 Published:2005-09-25
  • Contact: 张波(1962-)，男，教授，博士生导师，主要从事电力电子与电力传动技术方面的研究 E-mail:pbzhang@scut.edu.cn
  • About author:张波(1962-)，男，教授，博士生导师，主要从事电力电子与电力传动技术方面的研究
  • Supported by:

    国家自然科学基金资助项目(60474066)；广东省自然科学基金重点资助项目(05103540)

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Abstract:

As the inherent chaotic behavior of DC-DC converter helps to improve its EMC(Electromagnetic Com.patibility),the quantitative calculation of the chaos is very important.In this paper,the chaotic mapping of DC-DC converter is obtained by first establishing the chaotic model.Then,the eigenvector method is adopted to solve the invariant probability distribution of the chaotic mapping,thus achieving the chaotic quantitative calculation based on the chaotic characteristics.A peak current mode-controlled Boost converter is finally selected as an example for calculating the invariant probability distribution.All the details mentioned above lay a theoretical basis for the sup-pression of EMI(Electromagnetic Interference)of DC-DC converter according to the chaotic characteristics．

Key words: Boost converter, chaotic quantitative calculation, electromagnetic interference, eigenvector method, DC-DC converter