Fast-Scale and Slow-Scale Subharmonic Oscillation of Valley Current-Mode Controlled Buck Converter

A valley current-mode （VCM） controfled buck converter with current source load （CSI） has complex phenomena of fast-scale and slow-scale subharmonic oscillations. The piecewise smooth switching model of the VCM controlled buck converter with CSI is established. It is found that attractive regions of...

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Published inChinese physics letters Vol. 27; no. 9; pp. 50 - 53
Main Author 周国华 许建平 包伯成 张斐 刘雪山
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.2010
Subjects
Poincare映射
亚谐振动
平滑切换
时域仿真
氯乙烯单体
电流模式控制
谐波振荡
降压转换器
Online AccessGet full text
ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/27/9/090504

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Abstract A valley current-mode （VCM） controfled buck converter with current source load （CSI） has complex phenomena of fast-scale and slow-scale subharmonic oscillations. The piecewise smooth switching model of the VCM controlled buck converter with CSI is established. It is found that attractive regions of fast-scale and slow-scale subharmonic oscillations exist in the bifurcation diagram, and two tori exist in the corresponding Poincare mapping. The research results by time-domain simulation indicate that U-type subharmonic oscillation （SO） constituted by SO and frequency-reduced subharmonic oscillation （FSO） exists in inductor current, and sine-type SO constituted by fast scale and low scale exists in output voltage respectively. Experimental results are given to verify the analysis and simulation results.
AbstractList A valley current-mode （VCM） controfled buck converter with current source load （CSI） has complex phenomena of fast-scale and slow-scale subharmonic oscillations. The piecewise smooth switching model of the VCM controlled buck converter with CSI is established. It is found that attractive regions of fast-scale and slow-scale subharmonic oscillations exist in the bifurcation diagram, and two tori exist in the corresponding Poincare mapping. The research results by time-domain simulation indicate that U-type subharmonic oscillation （SO） constituted by SO and frequency-reduced subharmonic oscillation （FSO） exists in inductor current, and sine-type SO constituted by fast scale and low scale exists in output voltage respectively. Experimental results are given to verify the analysis and simulation results.
A valley current-mode (VCM) controlled buck converter with current source load (CSI) has complex phenomena of fast-scale and slow-scale subharmonic oscillations. The piecewise smooth switching model of the VCM controlled buck converter with CSI is established. It is found that attractive regions of fast-scale and slow-scale subharmonic oscillations exist in the bifurcation diagram, and two tori exist in the corresponding Poincare mapping. The research results by time-domain simulation indicate that U-type subharmonic oscillation (SO) constituted by SO and frequency-reduced subharmonic oscillation (FSO) exists in inductor current, and sine-type SO constituted by fast scale and low scale exists in output voltage respectively. Experimental results are given to verify the analysis and simulation results.
Author 周国华 许建平 包伯成 张斐 刘雪山
AuthorAffiliation School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031 School of Electrical and Information Engineering, Jiangsu Teachers University of Technology, Changzhou 213001
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Snippet A valley current-mode （VCM） controfled buck converter with current source load （CSI） has complex phenomena of fast-scale and slow-scale subharmonic...
A valley current-mode (VCM) controlled buck converter with current source load (CSI) has complex phenomena of fast-scale and slow-scale subharmonic...
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SubjectTerms Poincare映射
亚谐振动
平滑切换
时域仿真
氯乙烯单体
电流模式控制
谐波振荡
降压转换器
Title Fast-Scale and Slow-Scale Subharmonic Oscillation of Valley Current-Mode Controlled Buck Converter
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