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Article

Optimal Coordinated Control Strategy of Clustered DC Microgrids under Load-Generation Uncertainties Based on GWO

1
Department of Electrical and Electronic Engineering, Auckland University of Technology, Auckland 1010, New Zealand
2
Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark
*
Author to whom correspondence should be addressed.
Academic Editors: Aitor Vázquez Ardura and Juan Rodríguez Méndez
Electronics 2022, 11(8), 1244; https://doi.org/10.3390/electronics11081244
Received: 13 March 2022 / Revised: 4 April 2022 / Accepted: 12 April 2022 / Published: 14 April 2022
(This article belongs to the Special Issue Power Converter Design, Control and Applications)
The coordination of clustered microgrids (MGs) needs to be achieved in a seamless manner to tackle generation-load mismatch among MGs. A hierarchical control strategy based on PI controllers for local and global layers has been proposed in the literature to coordinate DC MGs in a cluster. However, this control strategy may not be able to resist significant load disturbances and unexpected generated powers due to the sporadic nature of the renewable energy resources. These issues are inevitable because both layers are highly dependent on PI controllers who cannot fully overcome the abovementioned obstacles. Therefore, Grey Wolf Optimizer (GWO) is proposed to enhance the performance of the global layer by optimizing its PI controller parameters. The simulation studies were conducted using the well-established MATLAB Simulink, and the results reveal that the optimized global layer performs better than the conventional ones. It is noticed that not only accurate power-sharing and proper voltage regulation within ±1% along with fewer power losses are achieved by adopting the modified consensus algorithm for the clustered DC MGs, but also the settling time and overshoot/undershoot are reduced even with the enormous load and generation changes which indicates the effectiveness of the proposed method used in the paper. View Full-Text
Keywords: DC microgrid; voltage regulation; power sharing; hierarchical control strategy; GWO DC microgrid; voltage regulation; power sharing; hierarchical control strategy; GWO
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MDPI and ACS Style

Al-Tameemi, Z.H.A.; Lie, T.T.; Foo, G.; Blaabjerg, F. Optimal Coordinated Control Strategy of Clustered DC Microgrids under Load-Generation Uncertainties Based on GWO. Electronics 2022, 11, 1244. https://doi.org/10.3390/electronics11081244

AMA Style

Al-Tameemi ZHA, Lie TT, Foo G, Blaabjerg F. Optimal Coordinated Control Strategy of Clustered DC Microgrids under Load-Generation Uncertainties Based on GWO. Electronics. 2022; 11(8):1244. https://doi.org/10.3390/electronics11081244

Chicago/Turabian Style

Al-Tameemi, Zaid H.A., Tek T. Lie, Gilbert Foo, and Frede Blaabjerg. 2022. "Optimal Coordinated Control Strategy of Clustered DC Microgrids under Load-Generation Uncertainties Based on GWO" Electronics 11, no. 8: 1244. https://doi.org/10.3390/electronics11081244

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