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首页> 外文期刊>Power Electronics, IET >Quasi-steady-state large-signal modelling of DC–DC switching converter: justification and application for varying operating conditions
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Quasi-steady-state large-signal modelling of DC–DC switching converter: justification and application for varying operating conditions

机译:DC-DC开关转换器的准稳态大信号建模:各种工作条件的合理性和应用

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摘要

Quasi-steady-state (QSS) large-signal models are often taken for granted in the analysis and design of DC-DC switching converters, particularly for varying operating conditions. In this study, the premise for the QSS is justified quantitatively for the first time. Based on the QSS, the DC-DC switching converter under varying operating conditions is reduced to the linear time varying systems model. Thereafter, the QSS concept is applied to analysis of frequency-domain properties of the DC-DC switching converters by using three-dimensional Bode plots, which is then utilised to the optimisation of the controller parameters for wide variations of input voltage and load resistance. An experimental prototype of an average-current-mode-controlled boost DC-DC converter is built to verify the analysis and design by both frequency-domain and time-domain measurements.
机译:准稳态(QSS)大信号模型在DC-DC开关转换器的分析和设计中经常被认为是理所当然的,特别是对于变化的工作条件。在本研究中,首次定量证明了QSS的前提。基于QSS,将在变化的工作条件下的DC-DC开关转换器简化为线性时变系统模型。此后,通过使用三维波特图,将QSS概念应用于DC-DC开关转换器的频域特性分析,然后将其用于优化控制器参数以优化输入电压和负载电阻的变化。建立了平均电流模式控制升压DC-DC转换器的实验原型,以通过频域和时域测量来验证分析和设计。

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