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As the proportion of new energy generation increases, virtual synchronous generator (VSG) technology has a wide range of application prospects in photovoltaic power generation and wind power generation. However, under the power command perturbation, the output power and frequency of VSG will be greatly oscillated. To address this problem, this paper establishes an accurate small-signal model of VSG, analyzes the intrinsic cause of the active power oscillations, and proposes an error-power low-pass feedforward control strategy to improve the transient characteristics. Finally, the proposed method is simulated using Simulink, which verifies that the method can provide an improvement in the transient characteristics of the virtual synchronous generator.

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Improvement of VSG Transient Characteristics Based on Low-Pass Feedforward of Power Error

  • 会议论文

  • 发表日期：

    2025年

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  • Jian Fang,
  • Yan Tian,
  • Bo Huang,
  • Zhikai Pang,
  • Xiang Lin,
  • Yu Qin

摘要

As the proportion of new energy generation increases, virtual synchronous generator (VSG) technology has a wide range of application prospects in photovoltaic power generation and wind power generation. However, under the power command perturbation, the output power and frequency of VSG will be greatly oscillated. To address this problem, this paper establishes an accurate small-signal model of VSG, analyzes the intrinsic cause of the active power oscillations, and proposes an error-power low-pass feedforward control strategy to improve the transient characteristics. Finally, the proposed method is simulated using Simulink, which verifies that the method can provide an improvement in the transient characteristics of the virtual synchronous generator.