Scholarlink

<p>Active Dampers (ADs) are power electronic devices that suppress harmonic oscillations in parallel grid-connected inverters by emulating virtual resistance. Although typically installed at the point of common coupling, their optimal placement for achieving the best resonance suppression performance has not been systematically investigated. Traditional resonance modal analysis faces challenges due to the requirement of detailed system modeling and computationally intensive eigenvalue decomposition. This paper proposes an improved RMA-based siting strategy, which integrates impedance scanning with offline inverter data to construct a node self-impedance model. The node with the highest participation factor is identified as the optimal installation location for the AD, and the proposed method directly derives participation factors from self-impedance, thereby avoiding complex eigenvalue decomposition. MATLAB/Simulink simulation results demonstrate that following this siting strategy for impedance adapter placement achieves optimal harmonic resonance suppression. RT-LAB experiments further validates the effectiveness of the proposed strategy. The conventional practice of installing impedance adapters at the PCC is shown to be non-optimal, while the proposed AD siting strategy provides effective theoretical support and a practical solution for optimizing impedance adapter performance, filling the gap in modal analysis-based siting for black-box inverters.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Siting Strategy for Active Dampers Based on Improved Resonance Modal Analysis under Black-Box Conditions

  • 期刊论文

  • 发表日期：

    2026年7月10日

查看全文
  • Fei Li,
  • Muzi Sun,
  • Lin Chen,
  • Yongxin Zhang,
  • Xing Zhang

摘要

Active Dampers (ADs) are power electronic devices that suppress harmonic oscillations in parallel grid-connected inverters by emulating virtual resistance. Although typically installed at the point of common coupling, their optimal placement for achieving the best resonance suppression performance has not been systematically investigated. Traditional resonance modal analysis faces challenges due to the requirement of detailed system modeling and computationally intensive eigenvalue decomposition. This paper proposes an improved RMA-based siting strategy, which integrates impedance scanning with offline inverter data to construct a node self-impedance model. The node with the highest participation factor is identified as the optimal installation location for the AD, and the proposed method directly derives participation factors from self-impedance, thereby avoiding complex eigenvalue decomposition. MATLAB/Simulink simulation results demonstrate that following this siting strategy for impedance adapter placement achieves optimal harmonic resonance suppression. RT-LAB experiments further validates the effectiveness of the proposed strategy. The conventional practice of installing impedance adapters at the PCC is shown to be non-optimal, while the proposed AD siting strategy provides effective theoretical support and a practical solution for optimizing impedance adapter performance, filling the gap in modal analysis-based siting for black-box inverters.