超弱电网下并网逆变器振荡稳定性增强的无功混合同步控制

IF 6.5 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Electronics Pub Date : 2025-07-10 DOI:10.1109/TPEL.2025.3587741

Lei Gao;Jing Lyu;Xin Zong;Han Wang;Xu Cai

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引用次数: 0

摘要

本文研究了超弱电网中随网并网逆变器的振荡稳定性增强问题。首先将基于gfl的GCI的控制环节可视化为虚拟阻抗电路元件，从电路的角度阐明负电阻的本质。基于等效电路模型，揭示了基于gfl的gci在超弱电网中的失稳机理。在此基础上，提出了一种无功功率混合同步控制（RPHSC）方法，以确保在极低短路比（scr）下稳定运行，同时最小化无功功耗并保持所需的功率因数。通过建模技术公司StarSim控制器硬件在环平台的仿真和实验结果，验证了该方法的有效性。

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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Reactive Power Hybrid Synchronization Control for Oscillatory Stability Enhancement of Grid-Connected Inverters Under Ultraweak Grids

This article focuses on the oscillatory stability enhancement of grid-following (GFL) grid-connected inverters (GCIs) in ultraweak grids. The control links of the GFL-based GCI are first visualized as virtual impedance circuit elements to elucidate the nature of negative resistance from a circuit perspective. Based on equivalent circuit models, the instability mechanism of GFL-based GCIs in ultraweak grids is revealed. On this basis, a reactive power hybrid synchronization control (RPHSC) method is proposed to ensure stable operation at extremely low short-circuit ratios (SCRs), while minimizing reactive power consumption and maintaining the desired power factor. The validation of the proposed method is demonstrated through simulations and experimental results obtained from the Modeling Tech StarSim controller hardware-in-the-loop platform.

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来源期刊

IEEE Transactions on Power Electronics 工程技术-工程：电子与电气

CiteScore

15.20

自引率

20.90%

发文量

1099

审稿时长

3 months

期刊介绍： The IEEE Transactions on Power Electronics journal covers all issues of widespread or generic interest to engineers who work in the field of power electronics. The Journal editors will enforce standards and a review policy equivalent to the IEEE Transactions, and only papers of high technical quality will be accepted. Papers which treat new and novel device, circuit or system issues which are of generic interest to power electronics engineers are published. Papers which are not within the scope of this Journal will be forwarded to the appropriate IEEE Journal or Transactions editors. Examples of papers which would be more appropriately published in other Journals or Transactions include: 1) Papers describing semiconductor or electron device physics. These papers would be more appropriate for the IEEE Transactions on Electron Devices. 2) Papers describing applications in specific areas: e.g., industry, instrumentation, utility power systems, aerospace, industrial electronics, etc. These papers would be more appropriate for the Transactions of the Society which is concerned with these applications. 3) Papers describing magnetic materials and magnetic device physics. These papers would be more appropriate for the IEEE Transactions on Magnetics. 4) Papers on machine theory. These papers would be more appropriate for the IEEE Transactions on Power Systems. While original papers of significant technical content will comprise the major portion of the Journal, tutorial papers and papers of historical value are also reviewed for publication.