Chaos, bifurcation and intermittent phenomena in DC-DC converters under resonant parametric perturbation
1 Department of Electrical Engineering, Anna University, Chennai 600 025, India
2 Department of Physics, Anna University, Chennai 600 025, India
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Revised: 3 May 2013
Published online: 11 July 2013
DC-DC converters act as a black box to study various bifurcations. In the present study, the influence of external periodic interference signal in the input of DC-DC voltage-mode controlled buck converter has been considered. It is found that the presence of sinusoidal or saw-tooth interference signal whose frequency is comparable with the switching frequency of the converter or its rational multiples manifests as remerging chaotic band attractors (or Feigenbaum trees) and intermittent chaos. However, the presence of sinusoidal interference signal having irrational frequency ratios with the switching frequency of the converter leads to quasi-periodic route to chaos. The study was carried out both theoretically and experimentally.
© EDP Sciences, Springer-Verlag, 2013