Autonomous and Decentralized Load Sharing and Energy Management Approach for DC Microgrids

Ali Azizi, Saeed Peyghami*, Hossein Mokhtari, Frede Blaabjerg

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

33 Citations (Scopus)
107 Downloads (Pure)

Abstract

Appropriate power sharing and energy management in DC microgrids for the optimal, reliable and efficient operation of renewable energies and storages are of high importance. Droop-based control methods have been presented for power sharing among DC sources, while the energy management approaches employ communication systems to monitor the demand, renewable generations and energy level of storage units in order to properly operate the energy sources. Employing communication systems may affect the system reliability and introduce infrastructure costs. Moreover, extending energy sources require modifying the energy management system. This paper proposes an autonomous and decentralized power sharing and energy management approach for DC microgrids without utilizing a communication system. Hence, it can be a reliable and economical solution for operation of DC microgrids. Furthermore, in the proposed approach, the energy sources can operate independently by using the local information, and hence, it introduces plug-and-play capability for extending the energy sources. The viability and effectiveness of the proposed approach are evaluated by simulations and validated by experiments.
Original languageEnglish
Article number106009
JournalElectric Power Systems Research
Volume177
Number of pages11
ISSN0378-7796
DOIs
Publication statusPublished - Dec 2019

Keywords

  • Dc microgrid
  • Power sharing
  • Energy management
  • Decentralised control
  • PV
  • Battery Energy Storage System (BESS)

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