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To improve the small-signal stability of system, the damping torque model of flux-controlled grid-forming DFIG is constructed based on the small-signal model. And the low-frequency damping characteristics of system are analyzed by adopting the complex torque coefficient method. Then, analogous to the principle of PSS, a low-frequency oscillation damping method is proposed, which can efficiently optimize the low-frequency damping characteristics of system. Finally, based on the simulation results, the accuracy of theoretical analysis results and the effectiveness of proposed method are verified.

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Low-Frequency Damping Analysis of Flux-Controlled Grid-Forming DFIG

  • 会议论文

  • 发表日期：

    2025年

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  • Yufei Hu,
  • Weibing Li,
  • Youhan Deng,
  • Dingguo Jiang,
  • Meng Huang,
  • Zhen Tian

摘要

To improve the small-signal stability of system, the damping torque model of flux-controlled grid-forming DFIG is constructed based on the small-signal model. And the low-frequency damping characteristics of system are analyzed by adopting the complex torque coefficient method. Then, analogous to the principle of PSS, a low-frequency oscillation damping method is proposed, which can efficiently optimize the low-frequency damping characteristics of system. Finally, based on the simulation results, the accuracy of theoretical analysis results and the effectiveness of proposed method are verified.