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Article

An Energy Management System-Based Control Strategy for DC Microgrids with Dual Energy Storage Systems

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Department of Electrical & Electronic Engineering, Rajshahi University of Engineering & Technology, Rajshahi 6204, Bangladesh
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Department of Electronics & Telecommunication Engineering, Rajshahi University of Engineering & Technology, Rajshahi 6204, Bangladesh
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Department of Electrical & Computer Engineering, Rajshahi University of Engineering & Technology, Rajshahi 6204, Bangladesh
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School of Engineering, Deakin University, Geelong, VIC 3216, Australia
*
Author to whom correspondence should be addressed.
Energies 2020, 13(11), 2992; https://doi.org/10.3390/en13112992
Received: 17 April 2020 / Revised: 3 June 2020 / Accepted: 4 June 2020 / Published: 10 June 2020
(This article belongs to the Section D: Energy Storage and Application)
In this work, a control strategy is developed for different components in DC microgrids where set points for all controllers are determined from an energy management system (EMS). The proposed EMS-based control scheme is developed for DC microgrids with solar photovoltaic (PV) systems as the primary generation units along with energy storage systems. In this work, the concept of dual energy storage systems (DESSs) is used, which includes a battery energy storage system (BESS) and supercapacitor (SC). The main feature of this DESS is to improve the dynamic performance of DC microgrids during severe transients appearing from changes in load demands as well as in the output power from solar PV units. Furthermore, the proposed EMS-based control scheme aims to enhance the lifetime of the BESS in DC microgrids with DESSs and voltage stability as compared to the same without SCs. The proposed EMS-based control strategy uses proportional-integral (PI) controllers to regulate the switching control actions for different converters within the DC microgrid based on the decision obtained from the EMS in order to achieve the desired control objectives. The performance of the proposed scheme was analyzed through simulation results in terms of improving the voltage stability, maintaining the power balance, and enhancing the lifetime of BESSs within a DC microgrid framework incorporated with the DESS. The simulations are carried out in the MATLAB/SIMULINK simulation platform and compared with a similar approach having only a single energy storage system, i.e., the BESS. View Full-Text
Keywords: common DC-bus voltage; DC microgrids; dual energy storage system; energy management system; power balance; state of charge common DC-bus voltage; DC microgrids; dual energy storage system; energy management system; power balance; state of charge
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MDPI and ACS Style

Ghosh, S.K.; Roy, T.K.; Pramanik, M.A.H.; Sarkar, A.K.; Mahmud, M.A. An Energy Management System-Based Control Strategy for DC Microgrids with Dual Energy Storage Systems. Energies 2020, 13, 2992. https://doi.org/10.3390/en13112992

AMA Style

Ghosh SK, Roy TK, Pramanik MAH, Sarkar AK, Mahmud MA. An Energy Management System-Based Control Strategy for DC Microgrids with Dual Energy Storage Systems. Energies. 2020; 13(11):2992. https://doi.org/10.3390/en13112992

Chicago/Turabian Style

Ghosh, Subarto Kumar, Tushar Kanti Roy, Md Abu Hanif Pramanik, Ajay Krishno Sarkar, and Md. Apel Mahmud. 2020. "An Energy Management System-Based Control Strategy for DC Microgrids with Dual Energy Storage Systems" Energies 13, no. 11: 2992. https://doi.org/10.3390/en13112992

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