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Modular input‐parallel output‐series DC/DC converter control with fault detection and redundancy.

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Title: Modular input‐parallel output‐series DC/DC converter control with fault detection and redundancy.
Authors: Lian, Yiqing1 (AUTHOR) yiqing.lian@strath.ac.uk, Adam, Grain1 (AUTHOR), Holliday, Derrick1 (AUTHOR), Finney, Stephen1 (AUTHOR)
Source: IET Generation, Transmission & Distribution (Wiley-Blackwell). Apr2016, Vol. 10 Issue 6, p1361-1369. 9p.
Abstract: Large offshore wind farms require extensive sub‐sea cables within the collection network. Present solutions are based around medium‐voltage AC collection networks. Recent studies have highlighted the potential benefits of DC collection networks. However, achieving DC/DC conversion at the required voltage and power levels presents a significant challenge for wind‐turbine power electronics. This study proposes an alternative DC collection network based around a modular DC/DC converter with input‐parallel output‐series connection. This modular topology can overcome the limitations imposed by semiconductor voltage ratings and provides fault‐tolerant operation. Small‐signal analysis of the converter is presented to be used to facilitate controller design for the converter input and output stages. A new master–slave control scheme and distributed voltage sharing controllers are proposed that ensure power sharing under all operating conditions, including during failure of a master module. This control scheme achieves fault‐tolerant operation by allowing the status of master module to be reallocated to any healthy module. The proposed control scheme is validated using simulation and experimentation, considering active power sharing between modules with parameter mismatch. [ABSTRACT FROM AUTHOR]
Copyright of IET Generation, Transmission & Distribution (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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Header DbId: egs
DbLabel: Engineering Source
An: 148082548
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PubTypeId: academicJournal
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  Data: Modular input‐parallel output‐series DC/DC converter control with fault detection and redundancy.
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  Data: <searchLink fieldCode="AR" term="%22Lian%2C+Yiqing%22">Lian, Yiqing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yiqing.lian@strath.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Adam%2C+Grain%22">Adam, Grain</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Holliday%2C+Derrick%22">Holliday, Derrick</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Finney%2C+Stephen%22">Finney, Stephen</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Large offshore wind farms require extensive sub‐sea cables within the collection network. Present solutions are based around medium‐voltage AC collection networks. Recent studies have highlighted the potential benefits of DC collection networks. However, achieving DC/DC conversion at the required voltage and power levels presents a significant challenge for wind‐turbine power electronics. This study proposes an alternative DC collection network based around a modular DC/DC converter with input‐parallel output‐series connection. This modular topology can overcome the limitations imposed by semiconductor voltage ratings and provides fault‐tolerant operation. Small‐signal analysis of the converter is presented to be used to facilitate controller design for the converter input and output stages. A new master–slave control scheme and distributed voltage sharing controllers are proposed that ensure power sharing under all operating conditions, including during failure of a master module. This control scheme achieves fault‐tolerant operation by allowing the status of master module to be reallocated to any healthy module. The proposed control scheme is validated using simulation and experimentation, considering active power sharing between modules with parameter mismatch. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IET Generation, Transmission & Distribution (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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      – Type: doi
        Value: 10.1049/iet-gtd.2015.0789
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 1361
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      – TitleFull: Modular input‐parallel output‐series DC/DC converter control with fault detection and redundancy.
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          Name:
            NameFull: Lian, Yiqing
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            NameFull: Adam, Grain
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            NameFull: Holliday, Derrick
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              M: 04
              Text: Apr2016
              Type: published
              Y: 2016
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              Value: 10
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