Study on Nonlinear Dynamics Behavior in PWM Switched-Capacitor DC-DC Converter

ZHANG Li-sen; WANG Li-zhi

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Study on Nonlinear Dynamics Behavior in PWM Switched-Capacitor DC-DC Converter

更新时间：2025-07-16

- Study on Nonlinear Dynamics Behavior in PWM Switched-Capacitor DC-DC Converter
- Acta Electronica Sinica Vol. 36, Issue 2, Pages: 266-270(2008)
- 作者机构：
  
  1. 空军工程大学理学院,陕西,西安,710051
  2. 西安理工大学电子工程系,陕西,西安,710048
  3. 空军工程大学理学院陕西西安,710051
  4. 西安理工大学电子工程系陕西西安,710048
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM13
- Published：2008
- 稿件说明：
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ZHANG Li-sen, WANG Li-zhi. Study on Nonlinear Dynamics Behavior in PWM Switched-Capacitor DC-DC Converter[J]. Acta Electronica Sinica, 2008, 36(2): 266-270.
DOI：

ZHANG Li-sen, WANG Li-zhi. Study on Nonlinear Dynamics Behavior in PWM Switched-Capacitor DC-DC Converter[J]. Acta Electronica Sinica, 2008, 36(2): 266-270. DOI：

摘要

建立了PWM型二阶开关电容DC-DC变换器的二维离散映射模型

用非线性动力学理论分析了映射模型定点的稳定情况.以电压反馈系数为参数

通过数值计算描绘了系统动态演化的分岔图和最大Lyapunov指数变化曲线.以二阶串并电容组合开关电容DC-DC变换器为例

用PSPICE软件对其进行模拟仿真

得到了变换器的混沌吸引子.理论分析、数值计算和模拟仿真保持了一致.

Abstract

A two-dimensional discrete-time map for pulse-width modulated second-order switched-capacitor DC-DC converter is derived.The stability at fixed point of the map is analyzed under nonlinear dynamics theory.The bifurcation diagram and largest Lyapunov exponent graph with the voltage feedback factor as parameter are obtained through numerical computation.Taking second-order switched-capacitor DC-DC converter as an example

we find a chaotic attractor in the converter by simulating the circuit with PSPICE program.The results from theoretical analysis

numerical computation and analog simulation coincide with each other well.

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Related Institution

(School of Science, Air Force Engineering University, Xi’ an,,)

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Department of Information and Control EngineeringXi’an University of TechnologyXi’anShaanxi 710048China

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