Fast-scale bifurcation in power-factor-correction buck-boost converters and effects of incompatible periodicities

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Original languageEnglish
Pages (from-to)251-264
Journal / PublicationInternational Journal of Circuit Theory and Applications
Issue number3
Online published4 May 2006
Publication statusPublished - May 2006
Externally publishedYes


In this paper, we derive the discrete-time model for the power-factor-correction (PFC) buck-boost converter in terms of a stroboscopic switching map. Fast-scale instability is analysed through a fold diagram, which exposes the periodicity of the operation as well as the locations of the critical phase angles of the line voltage at which instability begins to occur along a half-line cycle. The asymmetrical locations of the critical phase angles along a half-line cycle is explained in terms of 'under-developed' bifurcation. Border collision bifurcations are observed and analysed in detail. Copyright © 2006 John Wiley & Sons, Ltd.

Research Area(s)

  • buck-boost converter, power factor correction, fast-scale instability, bifurcation, border collision

Citation Format(s)