Dynamical analysis and experimental verification of valley current controlled buck converter

doi:10.1088/1674-1056/19/5/050509

中国物理B ›› 2010, Vol. 19 ›› Issue (5): 50509-050509.doi: 10.1088/1674-1056/19/5/050509

Dynamical analysis and experimental verification of valley current controlled buck converter

包伯成¹, 周国华², 许建平², 金艳艳²

(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:2009-08-28 修回日期:2009-10-29 出版日期:2010-05-15 发布日期:2010-05-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No.~50677056), the Doctoral Innovation Foundation of Southwest Jiaotong University of China, the Cultivation Project of Excellent Doctorate Dissertation of Southwest Jiaotong University of China, and the Natural Science Foundations of Jiangsu Province, China (Grant No.~BK2009105).

Dynamical analysis and experimental verification of valley current controlled buck converter

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

^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:2009-08-28 Revised:2009-10-29 Online:2010-05-15 Published:2010-05-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No.~50677056), the Doctoral Innovation Foundation of Southwest Jiaotong University of China, the Cultivation Project of Excellent Doctorate Dissertation of Southwest Jiaotong University of China, and the Natural Science Foundations of Jiangsu Province, China (Grant No.~BK2009105).

摘要/Abstract

摘要： The dynamical behaviours of valley current controlled buck converter are studied by establishing its corresponding discrete iterative map model in this paper. Time-domain waveforms and phase portraits of valley current controlled buck converter are obtained by Runge--Kutta algorithm through a piecewise smooth switching model. The research results indicate that the valley current controlled buck converter exhibits rich nonlinear phenomena, and it has routes to chaos through period-doubling bifurcation and border-collision bifurcation in a wide parameter range. Interesting inverse nonlinear behaviours compared with peak current controlled buck converter are observed in the valley current controlled buck converter. Analysis and simulation results are verified by experimental results.

Abstract: The dynamical behaviours of valley current controlled buck converter are studied by establishing its corresponding discrete iterative map model in this paper. Time-domain waveforms and phase portraits of valley current controlled buck converter are obtained by Runge--Kutta algorithm through a piecewise smooth switching model. The research results indicate that the valley current controlled buck converter exhibits rich nonlinear phenomena, and it has routes to chaos through period-doubling bifurcation and border-collision bifurcation in a wide parameter range. Interesting inverse nonlinear behaviours compared with peak current controlled buck converter are observed in the valley current controlled buck converter. Analysis and simulation results are verified by experimental results.

Key words: buck converter, bifurcation, dynamical behaviour, iterative map

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

84.30.Jc

05.45.Gg (Control of chaos, applications of chaos) 02.60.-x (Numerical approximation and analysis)

周国华, 包伯成, 许建平, 金艳艳. Dynamical analysis and experimental verification of valley current controlled buck converter[J]. 中国物理B, 2010, 19(5): 50509-050509.

Zhou Guo-Hua(周国华), Bao Bo-Cheng(包伯成), Xu Jian-Ping(许建平), and Jin Yan-Yan(金艳艳). Dynamical analysis and experimental verification of valley current controlled buck converter[J]. Chin. Phys. B, 2010, 19(5): 50509-050509.

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Dynamical analysis and experimental verification of valley current controlled buck converter

Dynamical analysis and experimental verification of valley current controlled buck converter

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