单相逆变器的谐域阻抗建模和稳定性分析

2024 IEEE 4th International Conference on Power, Electronics and Computer Applications (ICPECA) Pub Date : 2024-01-26 DOI:10.1109/ICPECA60615.2024.10471156

Longxiang You, Sicong Jin, Xin Zhang, Fang Wu, Yongmao Wang, Peng Li

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引用次数: 0

摘要

在交直流混合电网中，需要一个由电磁干扰（EMI）滤波器和双向转换器组成的总线转换系统，以确保直流和交流总线之间的能量传输。然而，级联系统往往会带来额外的稳定性问题，妨碍交直流混合电网的可靠运行。为了解决这个问题，本文研究了交直流混合电网中母线转换系统的级联稳定性，并使用谐波线性化方法对单相逆变器的输入阻抗进行建模。利用 Middlebrook 准则确定系统稳定性。最后，通过 Matlab/Simulink 建立了一个仿真模型来验证分析结论。

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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Harmonic-Domain Impedance Modeling and Stability Analysis of Single-Phase Inverters

In hybrid AC/DC grids, a bus conversion system comprising of electromagnetic interference (EMI) filters and bidirectional converters is required to ensure energy transmission between DC and AC buses. However, the cascaded system often introduces additional stability problems, which impede the reliable operation of hybrid AC/DC grids. To solve the problem, this paper investigates the cascaded stability of the bus conversion system in hybrid AC/DC grids, and the input impedance of a single-phase inverter is modeled using the harmonic linearization method. The Middlebrook criterion is utilized to determine system stability. Finally, a simulation model is constructed by Matlab/Simulink to validate the analysis conclusion.

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来源期刊

2024 IEEE 4th International Conference on Power, Electronics and Computer Applications (ICPECA)

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