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Current Sharing Method Based on Chaotic Synchronization in Boost Converters

Author: YuWenZuo
Tutor: ZhangBo
School: South China University of Technology
Course: Power Electronics and Power Drives
Keywords: Chaos synchronization Parallel flow DC-DC converter Discrete Analytic Modeling
CLC: TM46
Type: Master's thesis
Year: 2010
Downloads: 204
Quote: 0
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Abstract


The parallel power system with high-current , high- efficiency , high reliability , expansion as well as the advantages of low cost , the increasing demand of distributed parallel power , its key technologies - Parallel streaming technology is particularly important . Traditions are all flow controller design are simplified approximate linear small-signal mathematical model based on power supply modules in parallel . But the nature of the power electronic converter is strongly coupled nonlinear system , small-signal analysis of the linearized model is difficult to truly reflect the physical characteristics of the system so that the traditional current methods accuracy is not high , the hardware implementation of complex issues such as . In this paper, a parallel DC-DC Boost converter as the research object , current parallel DC-DC converter based on sliding mode variable structure state observer theory and stability principle , chaos synchronization . The main contents of this paper are discussed below : (1) based on chaos synchronization principle of the chaotic synchronization in parallel converter to achieve the principles and methods of its parallel streams . ( 2) as the main research object to parallel the Boost converter the discrete analytic modeling , study the bifurcation and chaotic nonlinear dynamical behavior , and its nonlinear dynamic behavior are flow effect the relationship between parameters affected by the changes are effective flow variation . On this basis , based on the theory and stability theory of the observer , sliding mode variable structure observer parallel Boost Converter Chaos synchronization and its simulation using Matlab / Simulink . (3) This paper presents a new chaos generator - the segmented linear inductance chaotic circuit , and direct input to the CB555 chip operating frequency ports are used to generate the the chaos synchronization signal peak current control of DC / DC Boost Converter .

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter
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