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DC Microgrids: Benefits, Architectures, Perspectives and Challenges

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  • Vitor Fernão Pires

    (SustainRD, EST Setubal, Polytechnic Institute of Setúbal, 2914-508 Setúbal, Portugal
    INESC-ID, 1000-029 Lisboa, Portugal)

  • Armando Pires

    (SustainRD, EST Setubal, Polytechnic Institute of Setúbal, 2914-508 Setúbal, Portugal
    CTS-UNINOVA, 2829-516 Caparica, Portugal)

  • Armando Cordeiro

    (INESC-ID, 1000-029 Lisboa, Portugal
    ISEL—Instituto Politécnico de Lisboa, 1500-335 Lisboa, Portugal)

Abstract

One of the major paradigm shifts that will be predictably observed in the energy mix is related to distribution networks. Until now, this type of electrical grid was characterized by an AC transmission. However, a new concept is emerging, as the electrical distribution networks characterized by DC transmission are beginning to be considered as a promising solution due to technological advances. In fact, we are now witnessing a proliferation of DC equipment associated with renewable energy sources, storage systems and loads. Thus, such equipment is beginning to be considered in different contexts. In this way, taking into consideration the requirement for the fast integration of this equipment into the existing electrical network, DC networks have started to become important. On the other hand, the importance of the development of these DC networks is not only due to the fact that the amount of DC equipment is becoming huge. When compared with the classical AC transmission systems, the DC networks are considered more efficient and reliable, not having any issues regarding the reactive power and frequency control and synchronization. Although much research work has been conducted, several technical aspects have not yet been defined as standard. This uncertainty is still an obstacle to a faster transition to this type of network. There are also other aspects that still need to be a focus of study and research in order to allow this technology to become a day-to-day solution. Finally, there are also many applications in which this kind of DC microgrid can be used, but they have still not been addressed. Thus, all these aspects are considered important challenges that need to be tackled. In this context, this paper presents an overview of the existing and possible solutions for this type of microgrid, as well as the challenges that need to be faced now.

Suggested Citation

  • Vitor Fernão Pires & Armando Pires & Armando Cordeiro, 2023. "DC Microgrids: Benefits, Architectures, Perspectives and Challenges," Energies, MDPI, vol. 16(3), pages 1-20, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:3:p:1217-:d:1044365
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    2. Yangfan Chen & Yu Zhang, 2023. "DC Transformers in DC Distribution Systems," Energies, MDPI, vol. 16(7), pages 1-19, March.

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