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Addressing the issue of grid instability arising from the integration of doubly-fed induction generator(DFIG) systems, this paper utilizes a linearized model of DFIG systems and establishes the Phillips-Heffron model of the systems. The paper investigates the impact of grid integration capacity, input power, and control parameters of DFIG systems. The findings indicate that increasing the grid integration capacity, output power, and reducing control parameters diminishes the destabilizing effects on DFIG systems. Furthermore, a damping torque model suitable for DFIG systems is developed, elucidating the mechanism of system instability using damping torque analysis. This methodology is extended to multi-machine systems for comprehensive analysis.

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Refined Modeling of DFIG Grid-Connected Systems Based on Damping Torque Analysis

  • 会议论文

  • 发表日期：

    2025年

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  • Yang Zheng,
  • Shengyang Lu,
  • Haoqian Cui,
  • Shanshan Cheng,
  • Xuegao Wang,
  • Haixin Wang,
  • Junyou Yang

摘要

Addressing the issue of grid instability arising from the integration of doubly-fed induction generator(DFIG) systems, this paper utilizes a linearized model of DFIG systems and establishes the Phillips-Heffron model of the systems. The paper investigates the impact of grid integration capacity, input power, and control parameters of DFIG systems. The findings indicate that increasing the grid integration capacity, output power, and reducing control parameters diminishes the destabilizing effects on DFIG systems. Furthermore, a damping torque model suitable for DFIG systems is developed, elucidating the mechanism of system instability using damping torque analysis. This methodology is extended to multi-machine systems for comprehensive analysis.