HOPF BIFURCATION AS AN INTERMEDIATE-SCALE INSTABILITY IN SINGLE-STAGE POWER-FACTOR-CORRECTION POWER SUPPLIES : ANALYSIS, SIMULATIONS AND EXPERIMENTAL VERIFICATION

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)2095-2109
Journal / PublicationInternational Journal of Bifurcation and Chaos
Volume18
Issue number7
Publication statusPublished - Jul 2008
Externally publishedYes

Abstract

This paper reports intermediate-scale instability in a single-stage power-factor-correction (PFC) power supply that employs a cascade configuration of a boost stage operating in discontinuous conduction mode (DCM) and a forward stage operating in continuous conduction mode (CCM). The two stages combine into a single stage by sharing one main switch and one control loop to achieve input PFC and tight output regulation. The main results are given by "exact" cycle-by-cycle circuit simulations. The effect of the intermediate-scale instability on the attainable power factor is illustrated in terms of total harmonic distortion (THD) which is found by taking the Fast Fourier Transform (FFT) of the input current. The intermediate-scale instability usually manifests itself as local oscillations within a line cycle. Based on the stability analysis of a buck converter operating in CCM, the underlying mechanism of such instability can be attributed to the Hopf bifurcation that occurred in CCM forward stage. Finally, experimental results are presented for verification purposes. © 2008 World Scientific Publishing Company.

Research Area(s)

  • Power factor correction (PFC), Single-stage PFC power supply, Intermediate-scale instability, Hopf bifurcation

Citation Format(s)

HOPF BIFURCATION AS AN INTERMEDIATE-SCALE INSTABILITY IN SINGLE-STAGE POWER-FACTOR-CORRECTION POWER SUPPLIES : ANALYSIS, SIMULATIONS AND EXPERIMENTAL VERIFICATION. / DAI, DONG; TSE, CHI K.; ZHANG, BO; MA, XIKUI.

In: International Journal of Bifurcation and Chaos, Vol. 18, No. 7, 07.2008, p. 2095-2109.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review