Mode Decomposition Passivity-Based Control of Bidirectional Zeta-SEPIC DC-DC Converter

2022 IEEE 4th International Conference on Modern Electrical and Energy System (MEES) Pub Date : 2022-10-20 DOI:10.1109/MEES58014.2022.10005701

I. Shchur, Rostyslav-Ivan Kuzyk

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Abstract

DC-DC converters are one of the most popular power electronic devices. In this work, Zeta-SEPIC DC-DC converter configuration is considered, which has a number of important advantages for electric drives of autonomous vehicles. The operation of this converter is described by two systems of nonlinear equations - respectively for the forward power transfer (FPT) and backward power transfer (BPT) modes. To develop a control system for such an object, the energy approach - passivity-based control (PBC) is applied. In particular, thanks to mode decomposition, two PBC subsystems were synthesized for FPT and BPT, respectively. A number of control system configurations were studied by means of computer simulation, among which the most effective ones were selected for each of the modes. In order to stabilize the static and dynamic indicators of the system, nonlinear dependencies of additionally introduced coefficients of interconnections were found, the effectiveness of which was confirmed by the simulation results.

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基于模式分解无源的双向Zeta-SEPIC DC-DC变换器控制

DC-DC变换器是最常用的电力电子器件之一。在这项工作中，考虑了Zeta-SEPIC DC-DC转换器配置，该配置对于自动驾驶汽车的电驱动具有许多重要优势。该变换器的运行由两个非线性方程组描述，分别为前向功率传输(FPT)和后向功率传输(BPT)模式。为了开发这样一个对象的控制系统，应用了能量方法-基于被动的控制(PBC)。特别地，由于模态分解，分别为FPT和BPT合成了两个PBC子系统。通过计算机仿真研究了多种控制系统配置，并对每种模式选择了最有效的控制系统配置。为了稳定系统的静态和动态指标，发现了额外引入的连接系数的非线性依赖关系，仿真结果证实了其有效性。

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2022 IEEE 4th International Conference on Modern Electrical and Energy System (MEES)

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