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Coordinating Control of an Offshore LVDC Microgrid Based Renewable Energy Resources for Voltage Regulation and Circulating Current Minimization

Author

Listed:
  • Walid Nassar

    (Department of Electronic and Electrical Engineering, Faculty of Engineering, University of Strathclyde, Royal College Building, Glasgow G1 1XW, UK)

  • Olimpo Anaya-Lara

    (Department of Electronic and Electrical Engineering, Faculty of Engineering, University of Strathclyde, Royal College Building, Glasgow G1 1XW, UK)

  • Khaled Ahmed

    (Department of Electronic and Electrical Engineering, Faculty of Engineering, University of Strathclyde, Royal College Building, Glasgow G1 1XW, UK)

Abstract

Multi-Use Platform (MUP) is a new topic addressed, extensively, under the EU funded projects that aim to exploit oceans in a sustainable way in order to reduce the costs of marine energy and to extract seafood. MUP’s electrical grid experiences many challenges, being offshore. One of these challenges is that only Alternating Current (AC) systems are considered which are inefficient, expensive and require bulky components. Considering the advantages of Direct Current (DC) systems, this paper aims to study the feasibility of using the DC system to improve the electrical infrastructure of the MUP’s grid. Floating energy unit comprising tidal, wind and solar energy resources is considered as a base unit for the MUP’s grid. The paper proposes a new distributed controller for grid voltage regulation and minimizing circulating current among parallel-connected floating energy units in an offshore Low Voltage Direct Current (LVDC) microgrid. A mathematical model is derived for n -parallel floating energy units with the proposed controller. Additionally, stability analysis for the overall model of a single floating energy unit is also presented. The analysis and simulation of the proposed DC system demonstrate that the system is stable and fault-rejected at different operating conditions.

Suggested Citation

  • Walid Nassar & Olimpo Anaya-Lara & Khaled Ahmed, 2021. "Coordinating Control of an Offshore LVDC Microgrid Based Renewable Energy Resources for Voltage Regulation and Circulating Current Minimization," Energies, MDPI, vol. 14(12), pages 1-30, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:12:p:3384-:d:571220
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    References listed on IDEAS

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    1. Poullikkas, Andreas, 2013. "A comparative overview of large-scale battery systems for electricity storage," Renewable and Sustainable Energy Reviews, Elsevier, vol. 27(C), pages 778-788.
    2. Walid M. Nassar & Olimpo Anaya-Lara & Khaled H. Ahmed & David Campos-Gaona & Mohamed Elgenedy, 2020. "Assessment of Multi-Use Offshore Platforms: Structure Classification and Design Challenges," Sustainability, MDPI, vol. 12(5), pages 1-23, March.
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    Cited by:

    1. Audrius Bagdanavicius, 2022. "Energy and Exergy Analysis of Renewable Energy Conversion Systems," Energies, MDPI, vol. 15(15), pages 1-2, July.

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