电流编程DC/DC变换器的分岔控制:斜率补偿的再检验

2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353) Pub Date : 2000-05-28 DOI:10.1109/ISCAS.2000.857184

C. Tse, Y. Lai

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引用次数: 21

摘要

本文从“避免分叉”的角度重新审视了DC/DC变换器中传统的电流模式控制策略。这种替代观点允许方便地选择参数值，以保证稳定运行。斜率补偿被看作是使系统与第一个分岔点保持足够距离的一种手段。结果表明，过大的分岔间隙会导致动态响应缓慢。提出了一种可变斜坡补偿方法来动态调节斜坡的大小，使系统在不发生分岔的同时又能在瞬态下保持足够快的响应速度。

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Control of bifurcation in current-programmed DC/DC converters: a reexamination of slope compensation

This paper reexamines the conventional current-mode control strategy as applied to DC/DC converters in the light of "avoiding bifurcation". This alternative viewpoint permits convenient selection of parameter values to guarantee stable operation. Slope compensation is viewed as a means to keep the system sufficiently remote from the first bifurcation point. It is shown that excessive bifurcation clearance is accompanied by undesirably slow dynamical response. A variable ramp compensation is proposed to dynamically adjust the slope magnitude such that the system is kept clear of bifurcation yet responds sufficiently fast during transients.

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2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353)

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