https://doi.org/10.1051/epjconf/202431000015
Microgrids control: AC or DC, that is not the question
1 Jan C. Willems Center for Systems and Control, ENTEG, Faculty of Science and Engineering University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
2 Brandenburgische Technische Universita¨t, Cottbus-Senftenberg, Germany
* E-mail: m.cucuzzella@rug.nl
** E-mail: j.m.a.scherpen@rug.nl
*** E-mail: machadom@b-tu.de
Published online: 6 November 2024
In these lecture notes, we delve into the models of the most commonly used DC-DC power converters: namely, the buck converter and the boost converter. Furthermore, we derive models for a DC microgrid consisiting of multiple buck and/or boost converters interconnected via (dynamic) resistive-inductive power lines and supplying the so-called ZIP loads, which are characterized by the parallel combination of constant impedance (Z), current (I), and power (P) load components. Furthermore, we introduce the primary control objectives in DC microgrids, focusing on voltage regulation and current sharing. Finally, we explore the most advanced control techniques to achieve these objectives. Importantly, these lecture notes are not intended to advocate total replacement of Alternating Current (AC) power systems with their Direct Current (DC) counterparts, but rather aim to offer a balanced perspective between them, acknowledging the historical dominance of AC power systems while underscoring the contemporary relevance of DC microgrids, which, with their inherent advantages, represent a viable complement to the existing infrastructure, fostering innovation and resilience in modern power networks.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
