A POWER MANAGEMENT STRATEGY FOR DC MICROGRIDS OPERATING IN GRID CONNECTED MODE

Pedro José Dos Santos Neto, João Pedro Silveira, Tárcio André Dos Santos Barros, Ernesto Ruppert Filho, Juan Vasquez, Josep Guerrero*

*Corresponding author for this work

Research output: Contribution to journalConference article in JournalResearchpeer-review

Abstract

This paper presents a power management strategy to control a DC microgrid considering the operation in the grid connected mode. The analyzed system is composed of the utility grid interfaced with a voltage source converter, an energy storage system (ESS), a distributed generator and the customer loads. The proposed power management is considered as a master-slave technique, in which the VSC operates as a master grid-forming converter, while the ESS is a slave grid-supporting unity and the distributed generator works as a grid-feeding unity tracking the maximum power point. This management strategy is presented in details and its impact over the DC link voltage, the power flow and the ESS state of charge is analyzed. MATLAB/Simulink simulations are performed to obtain the results. The obtained results show that the proposed strategy is reliable and leads to better controllability over the power flow in the DC microgrid when compared with the hierarchical control.

Original languageEnglish
JournalEnergy Proceedings
Volume4
DOIs
Publication statusPublished - 2019
Event11th International Conference on Applied Energy, ICAE 2019 - Västerås, Sweden
Duration: 12 Aug 201915 Aug 2019

Conference

Conference11th International Conference on Applied Energy, ICAE 2019
Country/TerritorySweden
CityVästerås
Period12/08/201915/08/2019

Bibliographical note

Publisher Copyright:
© 2019, ISRES Publishing. All rights reserved.

Keywords

  • DC microgrid
  • Energy storage system
  • Grid connected mode
  • Master-slave control
  • Power management

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