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Predefined-Time Adaptive Virtual Synchronous Generator Secondary Control for Microgrids.

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Title: Predefined-Time Adaptive Virtual Synchronous Generator Secondary Control for Microgrids.
Authors: Gao, Xu1 (AUTHOR), Zhang, Dan1,2 (AUTHOR) zhangdan@shmtu.edu.cn, Xu, Weimin1 (AUTHOR), Tao, Yibin2 (AUTHOR), Li, Haoyuan2 (AUTHOR)
Source: Energies (19961073). Jun2026, Vol. 19 Issue 12, p2840. 22p.
Subject Terms: *Microgrids, *Adaptive control systems, *Frequency changers, *Synchronous generators, *Lyapunov stability
Abstract: The traditional secondary control method for virtual synchronous generators suffers from limitations such as slow dynamic response and poor adaptability under varying operating conditions, which significantly affect the reliability and stability of microgrids. To address these issues, this paper proposes an adaptive virtual synchronous generator secondary control method for microgrids based on predefined-time convergence. First, a predefined-time controller is designed, whose convergence time can be preset by the user, thereby resolving the problem of excessively long convergence times for frequency regulation and power sharing. Second, an adaptive inertia damping control method incorporating Gaussian functions is introduced to mitigate frequency fluctuations during disturbances in the microgrid system, effectively suppressing frequency deviations and enhancing microgrid stability. Finally, based on Lyapunov stability theory, the convergence of the proposed control method is rigorously proved, and its feasibility is validated through MATLAB/Simulink simulations. The results demonstrate that the proposed secondary control method reduces the frequency and active power convergence times by 0.98 s and 0.49 s, respectively, compared to traditional virtual synchronous generator secondary control methods. Additionally, it exhibits smaller frequency fluctuation magnitude during disturbances, enabling fast and smooth frequency recovery. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194909289
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  Label: Title
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  Data: Predefined-Time Adaptive Virtual Synchronous Generator Secondary Control for Microgrids.
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  Data: <searchLink fieldCode="AR" term="%22Gao%2C+Xu%22">Gao, Xu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Dan%22">Zhang, Dan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> zhangdan@shmtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xu%2C+Weimin%22">Xu, Weimin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tao%2C+Yibin%22">Tao, Yibin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Haoyuan%22">Li, Haoyuan</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, p2840. 22p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Microgrids%22">Microgrids</searchLink><br />*<searchLink fieldCode="DE" term="%22Adaptive+control+systems%22">Adaptive control systems</searchLink><br />*<searchLink fieldCode="DE" term="%22Frequency+changers%22">Frequency changers</searchLink><br />*<searchLink fieldCode="DE" term="%22Synchronous+generators%22">Synchronous generators</searchLink><br />*<searchLink fieldCode="DE" term="%22Lyapunov+stability%22">Lyapunov stability</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The traditional secondary control method for virtual synchronous generators suffers from limitations such as slow dynamic response and poor adaptability under varying operating conditions, which significantly affect the reliability and stability of microgrids. To address these issues, this paper proposes an adaptive virtual synchronous generator secondary control method for microgrids based on predefined-time convergence. First, a predefined-time controller is designed, whose convergence time can be preset by the user, thereby resolving the problem of excessively long convergence times for frequency regulation and power sharing. Second, an adaptive inertia damping control method incorporating Gaussian functions is introduced to mitigate frequency fluctuations during disturbances in the microgrid system, effectively suppressing frequency deviations and enhancing microgrid stability. Finally, based on Lyapunov stability theory, the convergence of the proposed control method is rigorously proved, and its feasibility is validated through MATLAB/Simulink simulations. The results demonstrate that the proposed secondary control method reduces the frequency and active power convergence times by 0.98 s and 0.49 s, respectively, compared to traditional virtual synchronous generator secondary control methods. Additionally, it exhibits smaller frequency fluctuation magnitude during disturbances, enabling fast and smooth frequency recovery. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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        Value: 10.3390/en19122840
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      – Code: eng
        Text: English
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        PageCount: 22
        StartPage: 2840
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      – SubjectFull: Microgrids
        Type: general
      – SubjectFull: Adaptive control systems
        Type: general
      – SubjectFull: Frequency changers
        Type: general
      – SubjectFull: Synchronous generators
        Type: general
      – SubjectFull: Lyapunov stability
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      – TitleFull: Predefined-Time Adaptive Virtual Synchronous Generator Secondary Control for Microgrids.
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            – D: 15
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 12
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            – TitleFull: Energies (19961073)
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