中国物理B ›› 2010, Vol. 19 ›› Issue (6): 60508-060508.doi: 10.1088/1674-1056/19/6/060508

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Symmetrical dynamics of peak current-mode and valley current-mode controlled switching dc-dc converters with ramp compensation

包伯成1, 周国华2, 许建平2, 金艳艳2   

  1. (1)School of Electrical and Information Engineering, Jiangsu Teachers University of Technology, Changzhou 213001, China; (2)School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • 收稿日期:2009-11-06 出版日期:2010-06-15 发布日期:2010-06-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No.~50677056), the Natural Science Foundation of Jiangsu Province, China (Grant No.~BK2009105), the Cultivation Project of Excellent Doctorate Dissertation of Southwest Jiaotong

Symmetrical dynamics of peak current-mode and valley current-mode controlled switching dc-dc converters with ramp compensation

Zhou Guo-Hua(周国华)a), Xu Jian-Ping(许建平)a), Bao Bo-Cheng(包伯成)b), and Jin Yan-Yan(金艳艳)a)   

  1. a School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China; b School of Electrical and Information Engineering, Jiangsu Teachers University of Technology, Changzhou 213001, China
  • Received:2009-11-06 Online:2010-06-15 Published:2010-06-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No.~50677056), the Natural Science Foundation of Jiangsu Province, China (Grant No.~BK2009105), the Cultivation Project of Excellent Doctorate Dissertation of Southwest Jiaotong

摘要: The discrete iterative map models of peak current-mode (PCM) and valley current-mode (VCM) controlled buck converters, boost converters, and buck--boost converters with ramp compensation are established and their dynamical behaviours are investigated by using the operation region, parameter space map, bifurcation diagram, and Lyapunov exponent spectrum. The research results indicate that ramp compensation extends the stable operation range of the PCM controlled switching dc--dc converter to D>0.5 and that of the VCM controlled switching dc--dc converter to D<0.5. Compared with PCM controlled switching dc--dc converters with ramp compensation, VCM controlled switching dc--dc converters with ramp compensation exhibit interesting symmetrical dynamics. Experimental results are given to verify the analysis results in this paper.

Abstract: The discrete iterative map models of peak current-mode (PCM) and valley current-mode (VCM) controlled buck converters, boost converters, and buck--boost converters with ramp compensation are established and their dynamical behaviours are investigated by using the operation region, parameter space map, bifurcation diagram, and Lyapunov exponent spectrum. The research results indicate that ramp compensation extends the stable operation range of the PCM controlled switching dc--dc converter to > 0.5 and that of the VCM controlled switching dc--dc converter to < 0.5. Compared with PCM controlled switching dc--dc converters with ramp compensation, VCM controlled switching dc--dc converters with ramp compensation exhibit interesting symmetrical dynamics. Experimental results are given to verify the analysis results in this paper.

Key words: discrete iterative map model, dynamics, switching converters, ramp compensation

中图分类号:  (Power electronics; power supply circuits)

  • 84.30.Jc
02.30.Oz (Bifurcation theory) 02.30.Yy (Control theory)