ZHU Mingzhe;WANG Yuhang;GE Le;

• 1:School of Electric Power Engineering
• 2: School of Shen Guorong
• 3: Nanjing Institute of Technology

Abstract：

Grid-connected inverters are the core equipment of renewable energy generation, while multi-inverter grid-connected systems are subject to potential resonance risks. To address this issue, recent research progress in this field is systematically reviewed, and future development trends are discussed. The factors influencing resonance in multi-inverter systems are analyzed, including grid impedance, system nonlinearities, and parameter mismatches among inverters. From the perspective of modeling methods, Norton equivalent models, eigenvalue-based analysis models, and harmonic state-space models are examined in detail, with emphasis on their respective advantages, limitations, and applicable scenarios. Active resonance suppression strategies, such as active damping methods, impedance reshaping, and active dampers, are then elaborated. Finally, future research directions and key challenges are outlined around the three aforementioned aspects. This review provides a useful reference for research on resonance in multi-inverter grid-connected systems and contributes to the stable operation of power grids with high penetration of renewable energy.

Key Words： multi-inverter systems;resonance stability;resonance suppression strategy

Abstract:

Keywords:

Foundation: 国家自然科学基金(52477101)

Authors: ZHU Mingzhe;WANG Yuhang;GE Le;

DOI: 10.19585/j.zjdl.202603010

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