Sampled-data Current Sharing for DC Microgrids

Authors

Abstract

In this paper, we propose a sampled-data control scheme for current sharing in DC microgrids with average voltage regulation and demonstrate its effectiveness through laboratory experiments. The current sharing problem in DC microgrids can be formulated as an output consensus control problem for port-Hamiltonian systems under unknown constant disturbances, for which a control scheme has been developed. However, in practical settings, control schemes are implemented in a sampled-data manner. As a theoretical contribution, we in this paper show that a suitably discretized continuous-time controller achieves output consensus for appropriately discretized port-Hamiltonian systems. Furthermore, for DC microgrids, average voltage regulation in the sampled-data setting can be achieved by a simple modification of the control scheme. The proposed method is validated through laboratory experiments.

Citation

Journal: Transactions of the Society of Instrument and Control Engineers
Year: 2026
Volume: 62
Issue: 5
Pages: 173–181
Publisher: The Society of Instrument and Control Engineers
DOI: 10.9746/sicetr.62.173

BibTeX

@article{WAKAI_2026,
  title={{Sampled-data Current Sharing for DC Microgrids: — Theory and Experiments —}},
  volume={62},
  ISSN={1883-8189},
  DOI={10.9746/sicetr.62.173},
  number={5},
  journal={Transactions of the Society of Instrument and Control Engineers},
  publisher={The Society of Instrument and Control Engineers},
  author={WAKAI, Daijiro and KAWANO, Yu and WADA, Nobutaka},
  year={2026},
  pages={173--181}
}

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References

Lasseter RH, Paigi P Microgrid: a conceptual solution. 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551) 4285–429 – 10.1109/pesc.2004.1354758
Justo JJ, Mwasilu F, Lee J, Jung J-W (2013) AC-microgrids versus DC-microgrids with distributed energy resources: A review. Renewable and Sustainable Energy Reviews 24:387–405. https://doi.org/10.1016/j.rser.2013.03.06 – 10.1016/j.rser.2013.03.067
Ahmed I, Rehan M, Basit A, Ahmad H, Ahmed W, Ullah N, Piecha M, Blazek V, Prokop L (2023) Review on microgrids design and monitoring approaches for sustainable green energy networks. Sci Rep 13(1). https://doi.org/10.1038/s41598-023-48985- – 10.1038/s41598-023-48985-7
Cucuzzella M, Trip S, De Persis C, Cheng X, Ferrara A, van der Schaft A (2019) A Robust Consensus Algorithm for Current Sharing and Voltage Regulation in DC Microgrids. IEEE Trans Contr Syst Technol 27(4):1583–1595. https://doi.org/10.1109/tcst.2018.283487 – 10.1109/tcst.2018.2834878
De Persis C, Weitenberg ERA, Dörfler F (2018) A power consensus algorithm for DC microgrids. Automatica 89:364–375. https://doi.org/10.1016/j.automatica.2017.12.02 – 10.1016/j.automatica.2017.12.026
Kawano Y, Cucuzzella M, Feng S, Scherpen JMA (2023) Krasovskii and shifted passivity based output consensus. Automatica 155:111167. https://doi.org/10.1016/j.automatica.2023.11116 – 10.1016/j.automatica.2023.111167
Kawano Y, Kosaraju KC, Scherpen JMA (2021) Krasovskii and Shifted Passivity-Based Control. IEEE Trans Automat Contr 66(10):4926–4932. https://doi.org/10.1109/tac.2020.304025 – 10.1109/tac.2020.3040252
8) E. Hairer, G. Wanner and C. Lubich: Geometric Numerical Integration, Springer Berlin, Heidelberg (2006)
Kawano Y, Moreschini A, Cucuzzella M (2025) Krasovskii Passivity for Sampled-Data Stabilization and Output Consensus. IEEE Trans Automat Contr 70(2):1038–1053. https://doi.org/10.1109/tac.2024.344780 – 10.1109/tac.2024.3447808
van der Schaft A (2017) L2-Gain and Passivity Techniques in Nonlinear Control. Springer International Publishin – 10.1007/978-3-319-49992-5
Feng S, Kawano Y, Cucuzzella M, Scherpen JMA (2022) Output consensus control for linear port-Hamiltonian systems. IFAC-PapersOnLine 55(30):230–235. https://doi.org/10.1016/j.ifacol.2022.11.05 – 10.1016/j.ifacol.2022.11.057