ZVZCS FB PWM变换器等效开关建模

2006 1st International Symposium on Systems and Control in Aerospace and Astronautics Pub Date : 2006-05-08 DOI:10.1109/ISSCAA.2006.1627625

T. Sun, Peng Gao, Hongpeng Liu

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引用次数: 1

摘要

由于开关工作的原因，DC-DC变换器中存在许多非线性现象。这些非线性特性导致了混沌。为了优化参数，避免DC-DC变换器在工作过程中出现混沌现象，必须进行混沌分析。但由于复杂的DC-DC变换器难以建立非线性数学模型，以往的研究主要集中在简单的拓扑结构上。本文通过分析ZVZCS FB型PWM DC-DC变换器的工作特性，提出了一种新的PWM等效开关模型建模方法。该模型可以在不求解高阶非线性方程组的情况下建立。这样大大简化了建模过程，便于对复杂的DC-DC变换器进行混沌分析

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Equivalent switching modeling of ZVZCS FB PWM converter

There are many nonlinear phenomena in DC-DC converter because of switching working. These nonlinear characteristics lead to chaos. To optimize parameters and avoid chaos occurring while DC-DC converter working, the analysis of chaos is necessary. But it always focused on simple topology before, because it's difficult to establish a nonlinear mathematic model on complicated DC-DC converter. This paper puts forward a new modeling method with PWM equivalent switching model by analyzing operating characteristic of ZVZCS FB PWM DC-DC converter. This model can be established without solving high order nonlinear equation system. So it makes the modeling course greatly simple, and makes the analysis about chaos in complicated DC-DC converter easily

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2006 1st International Symposium on Systems and Control in Aerospace and Astronautics

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