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Grid following battery energy storage system (GFL-BESS) can cope with the fluctuation and uncertainty of the output of direct-drive permanent magnet synchronous generator (D-PMSG). However, during the suppression of D-PMSG output fluctuations, the impact of GFL-BESS on the small signal stability of its control link is unknown. Based on the eigenvalue analysis method, this paper analyzes the influence of GFL-BESS on the dominant eigenvalues of D-PMSG during power response. In details, firstly, the state space model of D-PMSG is presented. Secondly, the mathematical model of the GFL-BESS with its control strategy is established. Finally, the influence of GFL-BESS on the small signal stability of D-PMSG is analyzed with the eigenvalue analysis method.

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Analysis of Small Signal Stability of a D-PMSG System Connected with Grid Following Battery Energy Storage

  • 会议论文

  • 发表日期：

    2025年

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  • Yuchen Feng,
  • Chang Lin,
  • Zhe Zhang,
  • Weifang Lin,
  • Jun Yi,
  • Ancheng Xue

摘要

Grid following battery energy storage system (GFL-BESS) can cope with the fluctuation and uncertainty of the output of direct-drive permanent magnet synchronous generator (D-PMSG). However, during the suppression of D-PMSG output fluctuations, the impact of GFL-BESS on the small signal stability of its control link is unknown. Based on the eigenvalue analysis method, this paper analyzes the influence of GFL-BESS on the dominant eigenvalues of D-PMSG during power response. In details, firstly, the state space model of D-PMSG is presented. Secondly, the mathematical model of the GFL-BESS with its control strategy is established. Finally, the influence of GFL-BESS on the small signal stability of D-PMSG is analyzed with the eigenvalue analysis method.