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Hybrid generators-based AC microgrid performance assessment in island mode.

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Title: Hybrid generators-based AC microgrid performance assessment in island mode.
Authors: Issa, Walid1 wissa@outlook.com, Sharkh, Suleiman2, Abusara, Mohammad3
Source: IET Power Electronics (Wiley-Blackwell). 2019, Vol. 12 Issue 8, p1973-1980. 8p.
Subjects: Electric generators, Factor analysis, Microgrids
Abstract: Achieving an accurate steady-state averaged active power sharing between parallel inverters in islanded AC microgrids could be realised by a traditional droop control. For identical inverters having the same droop gains, it is assumed that the transient average power responses will be similar, and no circulating current will flow between the units. However, different line impedances could influence the instantaneous power significantly and thus circulating power flows among the inverters particularly during sudden disturbances such as load changes. This power, if absorbed by an inverter, will lead the DC link voltage to rise abruptly and trip the inverter, thus, degrading the performance of the whole microgrid. The problem becomes worse when hybrid generators are serving as a unidirectional power source. This study assesses the performance of hybrid generators within an islanded microgrid against the mismatch in line impedances. Two schemes to stabilise the microgrid are proposed. In addition, a participation factor analysis is developed to select the most effective controller scheme to bound the DC link voltage and minimise the circulating power. Simulation and experimental results are presented to verify the analysis and the capability of the proposed controller. [ABSTRACT FROM AUTHOR]
Copyright of IET Power Electronics (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 137622912
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Hybrid generators-based AC microgrid performance assessment in island mode.
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  Data: <searchLink fieldCode="JN" term="%22IET+Power+Electronics+%28Wiley-Blackwell%29%22">IET Power Electronics (Wiley-Blackwell)</searchLink>. 2019, Vol. 12 Issue 8, p1973-1980. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Electric+generators%22">Electric generators</searchLink><br /><searchLink fieldCode="DE" term="%22Factor+analysis%22">Factor analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Microgrids%22">Microgrids</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Achieving an accurate steady-state averaged active power sharing between parallel inverters in islanded AC microgrids could be realised by a traditional droop control. For identical inverters having the same droop gains, it is assumed that the transient average power responses will be similar, and no circulating current will flow between the units. However, different line impedances could influence the instantaneous power significantly and thus circulating power flows among the inverters particularly during sudden disturbances such as load changes. This power, if absorbed by an inverter, will lead the DC link voltage to rise abruptly and trip the inverter, thus, degrading the performance of the whole microgrid. The problem becomes worse when hybrid generators are serving as a unidirectional power source. This study assesses the performance of hybrid generators within an islanded microgrid against the mismatch in line impedances. Two schemes to stabilise the microgrid are proposed. In addition, a participation factor analysis is developed to select the most effective controller scheme to bound the DC link voltage and minimise the circulating power. Simulation and experimental results are presented to verify the analysis and the capability of the proposed controller. [ABSTRACT FROM AUTHOR]
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  Label:
  Group: Ab
  Data: <i>Copyright of IET Power Electronics (Wiley-Blackwell) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1049/iet-pel.2018.5295
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 1973
    Subjects:
      – SubjectFull: Electric generators
        Type: general
      – SubjectFull: Factor analysis
        Type: general
      – SubjectFull: Microgrids
        Type: general
    Titles:
      – TitleFull: Hybrid generators-based AC microgrid performance assessment in island mode.
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            NameFull: Issa, Walid
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            NameFull: Sharkh, Suleiman
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            NameFull: Abusara, Mohammad
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            – D: 15
              M: 06
              Text: 2019
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              Y: 2019
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              Value: 12
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              Value: 8
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            – TitleFull: IET Power Electronics (Wiley-Blackwell)
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