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On Bidirectional DC Nano-Grids: Design Considerations and an Architecture Proposal

Author

Listed:
  • Aitor Vazquez

    (Electrical Engineering Department, Power Supply Systems Group, University of Oviedo, 33204 Gijon, Spain
    Campus de Viesques S/N, Edificio 3, Despacho 3.2.23, 33204 Gijon, Spain
    These authors contributed equally to this work.)

  • Kevin Martin

    (Electrical Engineering Department, Power Supply Systems Group, University of Oviedo, 33204 Gijon, Spain
    These authors contributed equally to this work.)

  • Manuel Arias

    (Electrical Engineering Department, Power Supply Systems Group, University of Oviedo, 33204 Gijon, Spain
    These authors contributed equally to this work.)

  • Javier Sebastian

    (Electrical Engineering Department, Power Supply Systems Group, University of Oviedo, 33204 Gijon, Spain
    These authors contributed equally to this work.)

Abstract

The use of DC distribution networks has several advantages, especially for energy saving and integration of energy storage system and renewable energies. In this regard, DC nano-grids are a very interesting solution when distributing electrical power in households. In this paper, an analysis about the possible bidirectional capability of this DC nano-grid is presented. The end-user can freely connect either a passive load (demanding power) or an active one (able to sink current to the grid). The analysis is divided into three different parts. First, a discussion about the most promising power architecture is addressed, taking into consideration the loads in a house. Second, a standard for voltage regulation in a bidirectional DC nano-grid is proposed. Finally, a possible bus provider for this particular bidirectional DC nano-grid is also addressed. This power converter is based on a Dual Active Bridge cascaded with five synchronous buck converters. The key design aspects of the proposed topology are analyzed to emphasize the particular constraints imposed by the standard and the power architecture. A 500 W, 380 V to 24 V bidirectional bus provider has been built in order to experimentally validate the standard proposal and the design aspects.

Suggested Citation

  • Aitor Vazquez & Kevin Martin & Manuel Arias & Javier Sebastian, 2019. "On Bidirectional DC Nano-Grids: Design Considerations and an Architecture Proposal," Energies, MDPI, vol. 12(19), pages 1-20, September.
  • Handle: RePEc:gam:jeners:v:12:y:2019:i:19:p:3715-:d:271782
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    Citations

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    Cited by:

    1. Houssem Rafik Al-Hana Bouchekara & Mohammad Shoaib Shahriar & Muhammad Sharjeel Javaid & Yusuf Abubakar Sha’aban & Makbul Anwari Muhammad Ramli, 2021. "Multi-Objective Optimization of a Hybrid Nanogrid/Microgrid: Application to Desert Camps in Hafr Al-Batin," Energies, MDPI, vol. 14(5), pages 1-24, February.
    2. Lucas V. Bellinaso & Edivan L. Carvalho & Rafael Cardoso & Leandro Michels, 2021. "Price-Response Matrices Design Methodology for Electrical Energy Management Systems Based on DC Bus Signalling," Energies, MDPI, vol. 14(6), pages 1-19, March.
    3. Sheridan, Steve & Sunderland, Keith & Courtney, Jane, 2023. "Swarm electrification: A comprehensive literature review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 175(C).

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