An Accurate Dynamic Characteristics Design Method for Boost Converter with PI Control Based on Motion Decomposition and Eigenvalue Configuration

2021 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2021-10-10 DOI:10.1109/ECCE47101.2021.9595381

Hong Li, Zexi Zhou, Zhipeng Zhang, Guoen Cao, Yajing Zhang

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Abstract

Bode diagram is always used for qualitatively judging the dynamic characteristics in DC-DC converters. However, there is lack of a quantitative dynamic characteristics design method to determine the settling time and overshoot of a DC-DC converter in engineering applications. In this paper, firstly, the dynamic model of Boost converter is established by period averaging and small-signal linearization modeling. After that, the dynamic characteristics of the Boost converter is accurately represented by the eigenvalues of the closed-loop system through motion decomposition. Then, the eigenvalues region of the closed-loop system that satisfies the expected dynamic characteristics of the Boost converter is analyzed. Furthermore, the PI parameters that conFigure the eigenvalues of the closed-loop system to satisfy the corresponding dynamic characteristics area are calculated by the eigenvalue configuration. Finally, the effectiveness of the proposed dynamic characteristics design method is verified by PSIM simulation and experiment. The proposed method provides a reference for the dynamic characteristics design of the Boost converter.

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基于运动分解和特征值组态的PI控制升压变换器动态特性精确设计方法

波德图常用于定性地判断DC-DC变换器的动态特性。然而，在工程应用中，缺乏一种定量的动态特性设计方法来确定DC-DC变换器的稳定时间和超调量。本文首先通过周期平均和小信号线性化建模建立升压变换器的动态模型。然后，通过运动分解，将升压变换器的动态特性精确地表示为闭环系统的特征值。然后，分析了满足升压变换器期望动态特性的闭环系统的特征值区域。进而，通过特征值配置计算出配置闭环系统特征值以满足相应动态特性区域的PI参数。最后，通过PSIM仿真和实验验证了所提动态特性设计方法的有效性。该方法可为升压变换器的动态特性设计提供参考。

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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2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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