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Title: Minimizing energy storage utilization in a stand-alone dc microgrid using photovoltaic flexible power control
Authors: Yan, Hein Wai
Narang, Aditi
Tafti, Hossein Dehghani
Farivar, Glen G.
Ceballos, Salvador
Pou, Josep
Keywords: Engineering::Electrical and electronic engineering
Engineering::Electrical and electronic engineering::Power electronics
Issue Date: 2021
Source: Yan, H. W., Narang, A., Tafti, H. D., Farivar, G. G., Ceballos, S. & Pou, J. (2021). Minimizing energy storage utilization in a stand-alone dc microgrid using photovoltaic flexible power control. IEEE Transactions On Smart Grid, 12(5), 3755-3764.
Project: 2019-T1-001-168 (RG80/19) 
Journal: IEEE Transactions on Smart Grid 
Abstract: DC microgrids (dcMGs) are gaining popularity for photovoltaic (PV) applications as the demand for PV generation continues to grow exponentially. A hybrid control strategy for a PV and battery energy storage system (BESS) in a stand-alone dcMG is proposed in this paper. In contrast to the conventional control strategies that regulate the dc-link voltage only with the BESS, the proposed control strategy exploits both the PV system and the BESS to regulate the dc-link voltage. The PV acts as the primary dc voltage regulator allowing for the battery to remain standby as a secondary dc voltage regulating resource. As a result, the proposed control strategy minimizes the utilization of the BESS in order to prolong its lifetime while maintaining the state-of-charge (SoC) of the battery within a desired range. To achieve that, the flexible power point tracking (FPPT) concept is applied to the PV system to enhance the dynamic performance of the dcMG by adaptively adjusting the PV output power according to the load profile. The performance of the proposed control strategy is verified with experimental results. Furthermore, the effectiveness of the proposed control strategy on prolonging the lifetime of a lithium-ion battery and a lead-acid battery is investigated via a simulation case study with one-day load and irradiance curve profiles.
ISSN: 1949-3053
DOI: 10.1109/TSG.2021.3073370
Rights: © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
ERI@N Journal Articles

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