Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (10): 157-164.doi: 10.3969/j.issn.1000-565X.2011.10.027

• Power & Electrical Engineering • Previous Articles    

Unified Modeling of Switching Converters Based on Switching System

Li Ji-fang1,2  Han Jin-gang1  Tang Tian-hao1   

  1. 1. Logistics Engineering College,Shanghai Maritime University,Shanghai 200135,China; 2. Mechanical and Electrical Engineering Institute,Kaifeng University,Kaifeng 475004,Henan,China
  • Received:2011-03-10 Revised:2011-06-30 Online:2011-10-25 Published:2011-09-01
  • Contact: 李继方(1971-) ，男，博士生，副教授，主要从事电力传动与智能控制研究． E-mail:ljf538@163.com
  • About author:李继方(1971-) ，男，博士生，副教授，主要从事电力传动与智能控制研究．
  • Supported by:

    国家自然科学基金资助项目( 51007056) ; 上海市教委科研创新重点项目( 09ZZ162) ; 河南省高等学校青年骨干教师资助计划项目( 2010GGJS-263)

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Abstract:

As model analysis is the basis of the switching converter research,a switching system-based unified model is proposed according to the hybrid system theory,which is suitable for DC-AC and various types of DC-DC switching converters. Then,the construction method of Lyapunov function is proposed based on the parameter matrix of the unified model and the system switching laws are put forward by constructing this function. Meanwhile,the system stability under the proposed switching laws is analyzed and a general approach and some specific steps for the unified modeling are summarized. Finally,some simulations are carried out by establishing models for the DC-AC and three-level Buck-type DC-DC converters,and the rationality of the established models and the effectiveness of the modeling method and steps are both verified.

Key words: switching converter, switching system, modeling, continuous current mode