基于谐波平衡的PWM降压DC-DC变换器的倍周期分岔研究

2008 ISECS International Colloquium on Computing, Communication, Control, and Management Pub Date : 2008-08-03 DOI:10.1109/CCCM.2008.142

L. Wei, Zhang Jinbo

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引用次数: 2

摘要

本文利用谐波平衡方法研究了降压变换器的倍周期分岔问题。推导了电压模式控制下buck变换器的动态模型。通过精确谐波平衡分析，得到了发生倍周期分岔的必要条件，并给出了倍周期分岔的准确位置信息。利用该分岔条件，设计了一种前馈控制方案来消除倍周期分岔。仿真结果表明，该方法可以实现更宽的源电压工作范围和输出电压的调节。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Research of Period Doubling Bifurcation in PWM Buck DC-DC Converter Using Harmonic Balance

This paper studies the period doubling bifurcation in buck converters using harmonic balance. A dynamic model of a buck converter under voltage mode control is derived. An exact harmonic balance analysis is used to obtain a necessary condition for a period doubling bifurcation to occur and provide information on its exact location. Using the condition for bifurcation, a feedforward control scheme is designed to eliminate a period doubling bifurcation. The simulation results indicate that a wider operating range for the source voltage is achieved, along with output voltage regulation.

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2008 ISECS International Colloquium on Computing, Communication, Control, and Management

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