Dynamic bifurcation in dc drives

K. T. Chau, Jihe J. H. Chen, C. C. Chan

Research output: Journal article publicationConference articleAcademic researchpeer-review

17 Citations (Scopus)


Dynamic bifurcation as well as chaotic behavior in a fixed-frequency current-mode controlled dc chopper-fed dc motor drive system is presented. The key is to derive an iterative map that describes the nonlinear dynamics of the system operating in the continuous conduction mode. It illustrates that different bifurcation diagrams can be obtained by varying different system parameters. Analytical modeling of period-1 and hence period-p orbits as well as their stability analysis using the characteristic multipliers are also presented. Hence, those stable ranges of various system parameters can be determined. Moreover, chaotic behavior is quantified by evaluating the Lyapunov exponents. The proposed approach is so general that it can readily be applied to other current-mode dc drives.

Original languageEnglish
Pages (from-to)1330-1336
Number of pages7
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
Publication statusPublished - 1997
Externally publishedYes
EventProceedings of the 1997 28th Annual IEEE Power Electronics Specialists Conference, PESC. Part 1 (of 2) - St.Louis, CA, USA
Duration: 23 Jun 199726 Jun 1997

ASJC Scopus subject areas

  • Modelling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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