发表机构
Xi’an Polytechnic University; Nanyang Technological University; Tsinghua University（西安工业大学; 南洋理工大学; 清华大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出虚拟二端口控制，通过四个协调传输通道重构变流器终端阻抗，以改善微电网动态交互与功率共享，并推导了稳定条件，仿真验证其优于传统虚拟阻抗。
AI 中文摘要
变流器终端特性对于基于逆变器的微电网中与网络的动态交互以及稳态功率共享至关重要。传统的附加虚拟阻抗（VI）通过单一虚拟支路来塑造这些特性。本文提出虚拟二端口控制，利用四个协调传输通道重构终端阻抗。因此，所连接的网络通过虚拟插入的二端口接口观察原始变流器，而传统的虚拟阻抗被恢复为退化情形。所提出的控制通过矩阵线性分式映射变换原始阻抗。我们还推导了重构稳定且适定的充要条件。在微电网中的各种潜在应用中，我们详细开发了三个代表性应用：减少控制努力的钝化、不确定性压缩以及串并联潮流调节。对VSG控制变流器的仿真证明了所提方法在这些应用中相对于传统VI的优势。
英文摘要
Converter terminal characteristics are central to both dynamic interactions with the network and steady-state power sharing in inverter-based microgrids. Conventional additive virtual impedance (VI) shapes these characteristics through a single virtual branch. This paper proposes virtual two-port control, which uses four coordinated transfer channels to reconstruct the terminal impedance. The connected network consequently observes the original converter through a virtually inserted twoport interface, with conventional virtual impedance recovered as a degenerate case. The proposed control transforms the original impedance through a matrix linear-fractional map. We also derive a necessary and sufficient condition for the reconstruction to be stable and proper. Among its various potential applications in microgrids, we develop three representative ones in detail: passivation with reduced control effort, uncertainty compression, and seriesshunt power-flow regulation. Simulations of VSG-controlled converters demonstrate the advantages of the proposed method over conventional VI in these applications.
