Open AccessChaotic control of the Buck converter based on improving the correlation
Author(s) -
Mingxing Jia,
Guoshan Zhang,
Hong Niu
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.130503
Subject(s) - buck converter , chaotic , phase portrait , buck–boost converter , inductor , control theory (sociology) , waveform , computer science , voltage , converters , power (physics) , topology (electrical circuits) , bifurcation , nonlinear system , physics , control (management) , engineering , electrical engineering , quantum mechanics , artificial intelligence
Due to the strong nonlinearity of the Buck converter, it can be in the chaotic state under certain parameters and the chaotic Buck converter does not work normally. In order to suppress the chaotic phenomena in the Buck converter, a chaotic control scheme is demonstrated by establishing the accurate state equation models, and then analyzing the controllable range diagrams, the switching logic diagrams, the phase portrait, the inductor current waveforms and the output voltage waveforms. Also this scheme can be implemented by improving the correlation between the inductor current and the output voltage of the Buck converter. Research results show that this scheme can stabilize the chaotic Buck converter to the period-1, period-2, period-4, period-8 orbits, without determining the desired targeting orbits in advance. Moreover, this scheme does not depend on circuit parameters of the Buck converter, it only depends on an external parameter named the coupling strength, so this scheme can be applied to the other power converters.