平均电流模式控制中小信号模型的纹波效应

APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058) Pub Date : 2000-02-06 DOI:10.1109/APEC.2000.822599

Chunxiao Sun, B. Lehman, J. Sun

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引用次数: 18

摘要

研究了开关频率纹波对平均电流型PWM DC/DC变换器性能的影响。应用纹波估计和叠加方法推导出考虑这些影响的新的频率相关平均模型。新模型的小信号分析揭示了平均电流模式控制的几个重要特征，特别是在大纹波条件下，以前的模型无法预测。讨论了PWM DC/DC变换器的小信号模型。

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Ripple effects on small signal models in average current mode control

The effects of switching frequency ripple on the behavior of average current mode PWM DC/DC converters are studied. Ripple estimation and superposition methods are applied to derive new frequency-dependent averaged models that take into account these effects. Small-signal analysis of the new model reveals several important characteristics of average current mode control, especially under large ripple conditions, that previous models were unable to predict. Discussions on the small-signal models for PWM DC/DC converters are demonstrated.

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APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058)

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