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A New Active Power Decoupling Cascaded H-Bridge Static Synchronous Compensator and Its Control Method.

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Title: A New Active Power Decoupling Cascaded H-Bridge Static Synchronous Compensator and Its Control Method.
Authors: Feng, Qihui1 (AUTHOR), Zhu, Feng2 (AUTHOR), Lin, Chenghui1,3 (AUTHOR), Han, Xue1 (AUTHOR), Li, Dingguo2,3 (AUTHOR), Xiao, Weilong1,3 (AUTHOR) 19313004590@163.com
Source: Energies (19961073). Apr2026, Vol. 19 Issue 8, p1818. 22p.
Subject Terms: *Power quality disturbances, *Synchronous capacitors, *Reactive power control, *Scientific method, *Capacitors
Abstract: The cascaded H-bridge static synchronous compensator (STATCOM) has been widely employed in medium- and high-voltage reactive power compensation applications due to its high modularity, fast response speed, and direct grid connection capability. However, the DC-link voltage exhibits an inherent double-frequency ripple, which poses a serious challenge to power quality. Therefore, numerous Active Power Decoupling (APD) techniques have been proposed. However, existing schemes still exhibit certain limitations: independent APD topologies are associated with higher costs, whereas single bridge-arm multiplexed APD topologies are confronted with issues such as elevated DC-side voltage and increased current stress on the multiplexed arm. Consequently, comprehensive optimization is difficult to achieve in terms of the number of power devices, decoupling accuracy, level of capacitor multiplexing, and device stress. To address the above issues, this paper proposes a DC split capacitor (DC-SC)-based dual bridge-arm multiplexed cascaded H-bridge STATCOM with active power decoupling capability, along with its corresponding control method. By constructing a fundamental-frequency common-mode voltage on the decoupling capacitor, this method effectively suppresses the double-frequency ripple in the DC-side voltage and reduces the current stress on the switching devices. The simulation and experimental results have verified the correctness and effectiveness of the proposed topological structure and control method. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 193438158
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: A New Active Power Decoupling Cascaded H-Bridge Static Synchronous Compensator and Its Control Method.
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  Data: <searchLink fieldCode="AR" term="%22Feng%2C+Qihui%22">Feng, Qihui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Feng%22">Zhu, Feng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Chenghui%22">Lin, Chenghui</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Xue%22">Han, Xue</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Dingguo%22">Li, Dingguo</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiao%2C+Weilong%22">Xiao, Weilong</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> 19313004590@163.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Apr2026, Vol. 19 Issue 8, p1818. 22p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Power+quality+disturbances%22">Power quality disturbances</searchLink><br />*<searchLink fieldCode="DE" term="%22Synchronous+capacitors%22">Synchronous capacitors</searchLink><br />*<searchLink fieldCode="DE" term="%22Reactive+power+control%22">Reactive power control</searchLink><br />*<searchLink fieldCode="DE" term="%22Scientific+method%22">Scientific method</searchLink><br />*<searchLink fieldCode="DE" term="%22Capacitors%22">Capacitors</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The cascaded H-bridge static synchronous compensator (STATCOM) has been widely employed in medium- and high-voltage reactive power compensation applications due to its high modularity, fast response speed, and direct grid connection capability. However, the DC-link voltage exhibits an inherent double-frequency ripple, which poses a serious challenge to power quality. Therefore, numerous Active Power Decoupling (APD) techniques have been proposed. However, existing schemes still exhibit certain limitations: independent APD topologies are associated with higher costs, whereas single bridge-arm multiplexed APD topologies are confronted with issues such as elevated DC-side voltage and increased current stress on the multiplexed arm. Consequently, comprehensive optimization is difficult to achieve in terms of the number of power devices, decoupling accuracy, level of capacitor multiplexing, and device stress. To address the above issues, this paper proposes a DC split capacitor (DC-SC)-based dual bridge-arm multiplexed cascaded H-bridge STATCOM with active power decoupling capability, along with its corresponding control method. By constructing a fundamental-frequency common-mode voltage on the decoupling capacitor, this method effectively suppresses the double-frequency ripple in the DC-side voltage and reduces the current stress on the switching devices. The simulation and experimental results have verified the correctness and effectiveness of the proposed topological structure and control method. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.3390/en19081818
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 22
        StartPage: 1818
    Subjects:
      – SubjectFull: Power quality disturbances
        Type: general
      – SubjectFull: Synchronous capacitors
        Type: general
      – SubjectFull: Reactive power control
        Type: general
      – SubjectFull: Scientific method
        Type: general
      – SubjectFull: Capacitors
        Type: general
    Titles:
      – TitleFull: A New Active Power Decoupling Cascaded H-Bridge Static Synchronous Compensator and Its Control Method.
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            NameFull: Feng, Qihui
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            NameFull: Zhu, Feng
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            NameFull: Lin, Chenghui
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            NameFull: Han, Xue
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            NameFull: Li, Dingguo
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            NameFull: Xiao, Weilong
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            – D: 15
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 19961073
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              Value: 19
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              Value: 8
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            – TitleFull: Energies (19961073)
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