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Exact sampled‐data analysis of quasi‐resonant converters with finite filter inductance and capacitance
Author(s) -
Fang ChungChieh
Publication year - 2002
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.179
Subject(s) - converters , inductance , capacitance , filter (signal processing) , block diagram , signal (programming language) , topology (electrical circuits) , electronic engineering , network topology , network analysis , small signal model , mathematics , control theory (sociology) , computer science , physics , engineering , electrical engineering , voltage , control (management) , electrode , quantum mechanics , artificial intelligence , programming language , operating system
Previous models of quasi‐resonant converters generally use averaging and assume infinite filter inductance and capacitance to reduce circuit complexity, but at the expense of accuracy. In this paper, exact sampled‐data modelling is used. A general block diagram model applicable to various topologies of quasi‐resonant converters is proposed. Large‐signal analysis, steady‐state analysis and small‐signal analysis are all studied. They agree closely with the experimental results in the literature. Compared with the averaging approach, the sampled‐data approach is more systematic and accurate. Copyright © 2001 John Wiley & Sons, Ltd.