李姿.基于不稳定周期轨道的参数扰动法在Boost变换器混沌控制中的应用[J].电气自动化,2017,(5):12~13, 64
基于不稳定周期轨道的参数扰动法在Boost变换器混沌控制中的应用
Application of UPO-based Parameter Perturbation Method to the Chaos Control of Boost Converters
  修订日期:2017-03-23
DOI:
中文关键词:  Boost变换器,混沌电路,混沌控制,参数扰动法,不稳定周期-1轨道
英文关键词:Boost converter  chaotic circuit  chaos control  parameter perturbation  unstable periodic orbit-1
基金项目:
作者单位
李姿 华南理工大学电力学院,广东广州 510640 
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中文摘要:
      电力电子变换器是典型的非线性系统,分岔与混沌等非线性动力学现象的存在限制了变换器的工作范围,并对变换器性能产生了不良影响。因此,在对Boost变换器进行非线性动力学分析的基础上,通过采用一种基于不稳定周期轨道的参数扰动法,对处于混沌态的变换器进行控制,使重新工作于周期-1态。MATLAB数值仿真结果证明控制方案的有效性,在不改变主电路参数的前提下,可以扩大DC-DC变换器的稳定工作空间,提高变换器的增益,降低输出电压和输入电流的纹波,使变换器的性能得以提升。
英文摘要:
      The power electronic converter is a typical nonlinear system. The existence of nonlinear dynamic phenomena such as bifurcation and chaos limit the operating range of the converter and produces a harmful effect on the quality of the converter. Therefore, on the basis of a nonlinear dynamic analysis of the Boost converter, this paper adopts a parameter perturbation method based on UPO (unstable period orbit) to control the converter in its chaotic state so that it can operate again in the UPO-1 state. Results of MATLAB numerical simulation verify the effectiveness of the control approach. Without changing the parameters of the main circuit, this approach can expand the stable work space of the DC-DC converter, raise its gain and reduce ripple wave of the output voltage and input current, thus improving the performance of the converter.
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