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Energies 2016, 9(11), 924; doi:10.3390/en9110924

SoC-Based Output Voltage Control for BESS with a Lithium-Ion Battery in a Stand-Alone DC Microgrid

Department of Electrical Engineering, Myong-ji University, 116 Myongji-ro, Yongin-si, Gyeonggi-do 449-728, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Josep M. Guerrero
Received: 25 August 2016 / Revised: 26 October 2016 / Accepted: 3 November 2016 / Published: 8 November 2016
(This article belongs to the Special Issue Microgrids 2016)
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Abstract

This paper proposes a new DC output voltage control for a battery energy storage system (BESS) with a lithium-ion battery based on the state of charge (SoC). The proposed control scheme was verified through computer simulations for a typical stand-alone DC microgrid, which consists of a BESS, photovoltaic (PV) panel, engine generator (EG), and DC load. A scaled hardware prototype for a stand-alone DC microgrid was set up in the lab, in which the proposed control scheme was loaded in a DSP controller. The experimental results were compared with the simulation results for performance verification. The proposed control scheme provides relatively lower variation of the DC grid voltage than the conventional droop control. View Full-Text
Keywords: stand-alone DC microgrid; droop control; state of charge (SoC); photovoltaic (PV) panel; engine generator (EG); battery energy storage system (BESS); lithium-ion (Li-ion) battery stand-alone DC microgrid; droop control; state of charge (SoC); photovoltaic (PV) panel; engine generator (EG); battery energy storage system (BESS); lithium-ion (Li-ion) battery
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yu, S.-Y.; Kim, H.-J.; Kim, J.-H.; Han, B.-M. SoC-Based Output Voltage Control for BESS with a Lithium-Ion Battery in a Stand-Alone DC Microgrid. Energies 2016, 9, 924.

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