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Stability Analysis and Oscillation Mitigation of Grid-Forming Doubly Fed Induction Systems Based on Reduced-Order Modeling Generator.

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Title: Stability Analysis and Oscillation Mitigation of Grid-Forming Doubly Fed Induction Systems Based on Reduced-Order Modeling Generator.
Authors: Liu, Jingjia1 (AUTHOR), Zhao, Lulu1,2 (AUTHOR) 20019029@ceic.com, Chu, Jingchun1 (AUTHOR), Zhu, Haitao1 (AUTHOR), Sun, Zhenxin1 (AUTHOR), Yu, Yiping2 (AUTHOR)
Source: Energies (19961073). Jun2026, Vol. 19 Issue 12, p2927. 20p.
Subject Terms: *Reduced-order models, *Induction generators, *Damping (Mechanics), *Electric power system stability, *Stability theory, *Eigenanalysis
Abstract: The increasing penetration of renewable energy exposes doubly fed induction generator (DFIG)-based wind power systems to weak-grid conditions, making them susceptible to low-frequency and subsynchronous oscillations. Although grid-forming (GFM) control enhances weak-grid adaptability, the resulting high-order small-signal model complicates stability analysis and controller design. This paper establishes a 15th-order state-space model for a GFM-DFIG system. Eigenvalue analysis is performed to identify the dominant oscillation modes and to reveal their sensitivity to controller parameters and grid strength. To reduce computational burden, a model order reduction method combining singular perturbation theory and participation factor analysis is proposed, yielding an eighth-order model that preserves dominant oscillatory characteristics. An additional damping control strategy is then designed using the reduced model. Simulations validate the reduced model's accuracy and demonstrate the damping control's effectiveness in mitigating oscillations. This paper provides an effective framework for stability analysis, reduced-order modeling, and damping control design for GFM-DFIG systems. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194909376
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  Label: Title
  Group: Ti
  Data: Stability Analysis and Oscillation Mitigation of Grid-Forming Doubly Fed Induction Systems Based on Reduced-Order Modeling Generator.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Jingjia%22">Liu, Jingjia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Lulu%22">Zhao, Lulu</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> 20019029@ceic.com</i><br /><searchLink fieldCode="AR" term="%22Chu%2C+Jingchun%22">Chu, Jingchun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Haitao%22">Zhu, Haitao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Zhenxin%22">Sun, Zhenxin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Yiping%22">Yu, Yiping</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Jun2026, Vol. 19 Issue 12, p2927. 20p.
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  Data: *<searchLink fieldCode="DE" term="%22Reduced-order+models%22">Reduced-order models</searchLink><br />*<searchLink fieldCode="DE" term="%22Induction+generators%22">Induction generators</searchLink><br />*<searchLink fieldCode="DE" term="%22Damping+%28Mechanics%29%22">Damping (Mechanics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+power+system+stability%22">Electric power system stability</searchLink><br />*<searchLink fieldCode="DE" term="%22Stability+theory%22">Stability theory</searchLink><br />*<searchLink fieldCode="DE" term="%22Eigenanalysis%22">Eigenanalysis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The increasing penetration of renewable energy exposes doubly fed induction generator (DFIG)-based wind power systems to weak-grid conditions, making them susceptible to low-frequency and subsynchronous oscillations. Although grid-forming (GFM) control enhances weak-grid adaptability, the resulting high-order small-signal model complicates stability analysis and controller design. This paper establishes a 15th-order state-space model for a GFM-DFIG system. Eigenvalue analysis is performed to identify the dominant oscillation modes and to reveal their sensitivity to controller parameters and grid strength. To reduce computational burden, a model order reduction method combining singular perturbation theory and participation factor analysis is proposed, yielding an eighth-order model that preserves dominant oscillatory characteristics. An additional damping control strategy is then designed using the reduced model. Simulations validate the reduced model's accuracy and demonstrate the damping control's effectiveness in mitigating oscillations. This paper provides an effective framework for stability analysis, reduced-order modeling, and damping control design for GFM-DFIG systems. [ABSTRACT FROM AUTHOR]
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        Value: 10.3390/en19122927
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      – Code: eng
        Text: English
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        PageCount: 20
        StartPage: 2927
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      – SubjectFull: Reduced-order models
        Type: general
      – SubjectFull: Induction generators
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      – SubjectFull: Damping (Mechanics)
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      – SubjectFull: Electric power system stability
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      – SubjectFull: Stability theory
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      – SubjectFull: Eigenanalysis
        Type: general
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      – TitleFull: Stability Analysis and Oscillation Mitigation of Grid-Forming Doubly Fed Induction Systems Based on Reduced-Order Modeling Generator.
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            NameFull: Zhu, Haitao
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            NameFull: Sun, Zhenxin
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              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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            – TitleFull: Energies (19961073)
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