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Finite-Time Backstepping Control for Stand-Alone Three-Phase Voltage-Source Inverters Based on Disturbance Observer.

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Title: Finite-Time Backstepping Control for Stand-Alone Three-Phase Voltage-Source Inverters Based on Disturbance Observer.
Authors: Wu, Shiwei1 (AUTHOR), Pan, Dejun1,2 (AUTHOR), Zhang, Guanguan2,3 (AUTHOR), Chang, Le1,3 (AUTHOR), Wang, Xiaoling1,2 (AUTHOR), Fu, Cheng1,3 (AUTHOR) cfu@qdu.edu.cn
Source: Energies (19961073). Feb2026, Vol. 19 Issue 3, p781. 14p.
Subject Terms: *Backstepping control method, *Electric inverters, *Dynamic models, *Sliding mode control, *Uncertain systems
Abstract: For the three-phase voltage-source inverters (VSIs), load disturbances and parameter uncertainties degrade the quality of output voltages, potentially leading to system instability. To improve steady-state precision and disturbance rejection, this paper suggests a finite-time backstepping control (FTBC) strategy that incorporates a fixed-time sliding mode disturbance observer (FTSMDO). Firstly, this paper establishes a new dynamic model of the three-phase VSI considering load disturbances, parameter uncertainty and cross-coupling effect. Subsequently, a fixed-time disturbance observer is then developed to precisely estimate the uncertain disturbances, with its convergence time not reliant on the system's initial conditions. Concurrently, a finite-time differentiator is developed to achieve the desired signals, thereby sidestepping the "explosion of complexity" problem. A finite-time controller is constructed to obtain stable three-phase output voltages. Theoretical and test analysis demonstrate the proposed method is effective. Compared with the PI control, the proposed strategy improves dynamic performance and enhances disturbance-rejection capability under time-varying load disturbances. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 191587260
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PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Finite-Time Backstepping Control for Stand-Alone Three-Phase Voltage-Source Inverters Based on Disturbance Observer.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wu%2C+Shiwei%22">Wu, Shiwei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pan%2C+Dejun%22">Pan, Dejun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Guanguan%22">Zhang, Guanguan</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chang%2C+Le%22">Chang, Le</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xiaoling%22">Wang, Xiaoling</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fu%2C+Cheng%22">Fu, Cheng</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> cfu@qdu.edu.cn</i>
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Feb2026, Vol. 19 Issue 3, p781. 14p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Backstepping+control+method%22">Backstepping control method</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+inverters%22">Electric inverters</searchLink><br />*<searchLink fieldCode="DE" term="%22Dynamic+models%22">Dynamic models</searchLink><br />*<searchLink fieldCode="DE" term="%22Sliding+mode+control%22">Sliding mode control</searchLink><br />*<searchLink fieldCode="DE" term="%22Uncertain+systems%22">Uncertain systems</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: For the three-phase voltage-source inverters (VSIs), load disturbances and parameter uncertainties degrade the quality of output voltages, potentially leading to system instability. To improve steady-state precision and disturbance rejection, this paper suggests a finite-time backstepping control (FTBC) strategy that incorporates a fixed-time sliding mode disturbance observer (FTSMDO). Firstly, this paper establishes a new dynamic model of the three-phase VSI considering load disturbances, parameter uncertainty and cross-coupling effect. Subsequently, a fixed-time disturbance observer is then developed to precisely estimate the uncertain disturbances, with its convergence time not reliant on the system's initial conditions. Concurrently, a finite-time differentiator is developed to achieve the desired signals, thereby sidestepping the "explosion of complexity" problem. A finite-time controller is constructed to obtain stable three-phase output voltages. Theoretical and test analysis demonstrate the proposed method is effective. Compared with the PI control, the proposed strategy improves dynamic performance and enhances disturbance-rejection capability under time-varying load disturbances. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.3390/en19030781
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 781
    Subjects:
      – SubjectFull: Backstepping control method
        Type: general
      – SubjectFull: Electric inverters
        Type: general
      – SubjectFull: Dynamic models
        Type: general
      – SubjectFull: Sliding mode control
        Type: general
      – SubjectFull: Uncertain systems
        Type: general
    Titles:
      – TitleFull: Finite-Time Backstepping Control for Stand-Alone Three-Phase Voltage-Source Inverters Based on Disturbance Observer.
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            NameFull: Wu, Shiwei
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            NameFull: Pan, Dejun
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            NameFull: Zhang, Guanguan
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            NameFull: Chang, Le
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            NameFull: Wang, Xiaoling
      – PersonEntity:
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            NameFull: Fu, Cheng
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 19961073
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              Value: 19
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            – TitleFull: Energies (19961073)
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