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Simulation study of FACTS devices based on AC-AC modular multilevel hexagonal chopper.

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Title: Simulation study of FACTS devices based on AC-AC modular multilevel hexagonal chopper.
Authors: Peng Li1 peng.li@strath.ac.uk, Adam, Grain Philip1, Holliday, Derrick1, Finney, Stephen Jon1, Williams, Barry Wayne1
Source: IET Power Electronics (Wiley-Blackwell). 2017, Vol. 10 Issue 8, p919-930. 12p. 4 Diagrams, 5 Charts, 6 Graphs.
Subjects: Flexible AC transmission systems, Electronic modulation, Electric controllers, Reactive power, Capacitors
Abstract: This study proposes a new range of flexible AC transmission system (FACTS) device based on direct AC-AC conversion, where the modular multilevel AC hexagonal chopper (M2AHC) is employed. The M2AHC is operated in quasi-twolevel mode and the heterodyne modulation is used to decouple voltage amplitude regulation from the phase-shift; thus, independent control of active and reactive powers is achieved. Then, a family of FACTS devices based on M2AHC that offers voltage, active power and reactive power flow control as both shunt and series compensators is analysed. The use of AC cell capacitors instead of DC capacitors in M2AHC makes its footprint much smaller and lighter than conventional AC-DC or DC-AC voltage source converter-based FACTS devices; hence, high reliability and extended service-life could be expected. The system modelling and controller design of the proposed FACTS devices are illustrated in a unified reference frame, considering different control modes, transient and unbalanced conditions. Simulation results are used to verify the feasibility of the proposed M2AHC-based FACTS device. These FACTS devices will be preferred over conventional counterpart for confined spaced applications such as the grid access of large-scale offshore wind farms and resolution of loop flow in megacities. [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: 123977968
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  Data: Simulation study of FACTS devices based on AC-AC modular multilevel hexagonal chopper.
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  Data: <searchLink fieldCode="AR" term="%22Peng+Li%22">Peng Li</searchLink><relatesTo>1</relatesTo><i> peng.li@strath.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Adam%2C+Grain+Philip%22">Adam, Grain Philip</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Holliday%2C+Derrick%22">Holliday, Derrick</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Finney%2C+Stephen+Jon%22">Finney, Stephen Jon</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Williams%2C+Barry+Wayne%22">Williams, Barry Wayne</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22IET+Power+Electronics+%28Wiley-Blackwell%29%22">IET Power Electronics (Wiley-Blackwell)</searchLink>. 2017, Vol. 10 Issue 8, p919-930. 12p. 4 Diagrams, 5 Charts, 6 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Flexible+AC+transmission+systems%22">Flexible AC transmission systems</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+modulation%22">Electronic modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+controllers%22">Electric controllers</searchLink><br /><searchLink fieldCode="DE" term="%22Reactive+power%22">Reactive power</searchLink><br /><searchLink fieldCode="DE" term="%22Capacitors%22">Capacitors</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study proposes a new range of flexible AC transmission system (FACTS) device based on direct AC-AC conversion, where the modular multilevel AC hexagonal chopper (M2AHC) is employed. The M2AHC is operated in quasi-twolevel mode and the heterodyne modulation is used to decouple voltage amplitude regulation from the phase-shift; thus, independent control of active and reactive powers is achieved. Then, a family of FACTS devices based on M2AHC that offers voltage, active power and reactive power flow control as both shunt and series compensators is analysed. The use of AC cell capacitors instead of DC capacitors in M2AHC makes its footprint much smaller and lighter than conventional AC-DC or DC-AC voltage source converter-based FACTS devices; hence, high reliability and extended service-life could be expected. The system modelling and controller design of the proposed FACTS devices are illustrated in a unified reference frame, considering different control modes, transient and unbalanced conditions. Simulation results are used to verify the feasibility of the proposed M2AHC-based FACTS device. These FACTS devices will be preferred over conventional counterpart for confined spaced applications such as the grid access of large-scale offshore wind farms and resolution of loop flow in megacities. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  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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        Value: 10.1049/iet-pel.2016.0582
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 919
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      – SubjectFull: Flexible AC transmission systems
        Type: general
      – SubjectFull: Electronic modulation
        Type: general
      – SubjectFull: Electric controllers
        Type: general
      – SubjectFull: Reactive power
        Type: general
      – SubjectFull: Capacitors
        Type: general
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      – TitleFull: Simulation study of FACTS devices based on AC-AC modular multilevel hexagonal chopper.
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              Text: 2017
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