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Buffered Microgrids with Modular Back-to-Back Converter Grid Interface

Nachat Nasser, Meghdad Fazeli Orcid Logo, Ahmed A. Aboushady Orcid Logo

Energies, Volume: 15, Issue: 21, Start page: 7879

Swansea University Author: Meghdad Fazeli Orcid Logo

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DOI (Published version): 10.3390/en15217879

Abstract

This paper proposes a buffered microgrid with a modular grid interface consisting of a modular back-to-back converter. The proposed method provides a flexible way that enables both load and generation expansion of the microgrid with no sizing constraints on the initial stage. The method keeps the ph...

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Published in: Energies
ISSN: 1996-1073
Published: MDPI AG 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa61605
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first_indexed 2022-10-20T09:59:08Z
last_indexed 2023-01-13T19:22:27Z
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spelling 2022-11-14T11:59:50.2728019 v2 61605 2022-10-20 Buffered Microgrids with Modular Back-to-Back Converter Grid Interface b7aae4026707ed626d812d07018a2113 0000-0003-1448-5339 Meghdad Fazeli Meghdad Fazeli true false 2022-10-20 EEEG This paper proposes a buffered microgrid with a modular grid interface consisting of a modular back-to-back converter. The proposed method provides a flexible way that enables both load and generation expansion of the microgrid with no sizing constraints on the initial stage. The method keeps the physical separation of the buffered microgrid from the grid by using back-to-back converters, which ensures safe, secure and seamless operation for both islanded and grid-connected operation modes. The proposed modular structure allows an energy exchange prioritization either between the energy storage systems and the grid, or between the energy storage units themselves, depending on the recommended/desired operational strategy. The prioritizations are achieved by using sets of dead-zones in the control of the interfacing converters. The current control technique in the dq-frame has been implemented with the inverse-droop control technique to control the voltage magnitude and frequency, using current control in the dq-frame. PSCAD/EMTDC software has been used to validate the proposed method through simulating different scenarios. The solution ensures a simple, flexible, and communication-free decentralized control for multi-source microgrids. Journal Article Energies 15 21 7879 MDPI AG 1996-1073 Buffered microgrid, Droop Control, Energy Management, Primary Control, Renewable Energy, Seamless Operation. 24 10 2022 2022-10-24 10.3390/en15217879 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University Another institution paid the OA fee This research received no external funding. 2022-11-14T11:59:50.2728019 2022-10-20T10:51:24.6192828 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Nachat Nasser 1 Meghdad Fazeli 0000-0003-1448-5339 2 Ahmed A. Aboushady 0000-0002-2392-1916 3 61605__25761__8c4cbaa273e446f985b7e34ee145baf7.pdf 61605.pdf 2022-11-14T11:58:43.0713608 Output 5690247 application/pdf Version of Record true © 2022 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license true eng https://creativecommons.org/licenses/by/4.0/
title Buffered Microgrids with Modular Back-to-Back Converter Grid Interface
spellingShingle Buffered Microgrids with Modular Back-to-Back Converter Grid Interface
Meghdad Fazeli
title_short Buffered Microgrids with Modular Back-to-Back Converter Grid Interface
title_full Buffered Microgrids with Modular Back-to-Back Converter Grid Interface
title_fullStr Buffered Microgrids with Modular Back-to-Back Converter Grid Interface
title_full_unstemmed Buffered Microgrids with Modular Back-to-Back Converter Grid Interface
title_sort Buffered Microgrids with Modular Back-to-Back Converter Grid Interface
author_id_str_mv b7aae4026707ed626d812d07018a2113
author_id_fullname_str_mv b7aae4026707ed626d812d07018a2113_***_Meghdad Fazeli
author Meghdad Fazeli
author2 Nachat Nasser
Meghdad Fazeli
Ahmed A. Aboushady
format Journal article
container_title Energies
container_volume 15
container_issue 21
container_start_page 7879
publishDate 2022
institution Swansea University
issn 1996-1073
doi_str_mv 10.3390/en15217879
publisher MDPI AG
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
document_store_str 1
active_str 0
description This paper proposes a buffered microgrid with a modular grid interface consisting of a modular back-to-back converter. The proposed method provides a flexible way that enables both load and generation expansion of the microgrid with no sizing constraints on the initial stage. The method keeps the physical separation of the buffered microgrid from the grid by using back-to-back converters, which ensures safe, secure and seamless operation for both islanded and grid-connected operation modes. The proposed modular structure allows an energy exchange prioritization either between the energy storage systems and the grid, or between the energy storage units themselves, depending on the recommended/desired operational strategy. The prioritizations are achieved by using sets of dead-zones in the control of the interfacing converters. The current control technique in the dq-frame has been implemented with the inverse-droop control technique to control the voltage magnitude and frequency, using current control in the dq-frame. PSCAD/EMTDC software has been used to validate the proposed method through simulating different scenarios. The solution ensures a simple, flexible, and communication-free decentralized control for multi-source microgrids.
published_date 2022-10-24T04:20:32Z
_version_ 1763754359028449280
score 11.035655

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