Centralized SoC Balancing for Batteries with Droop-Controlled DC/DC Converters for Electric Aircraft

  • In this article, an approach to balance the State of Charge (SoC) of two batteries connected to the DC bus of a fuel cell (FC) electric aircraft by Droop-controlled converters is described. The proposed algorithm is based on shifting the Droop reference voltages and prevents the simultaneous charging and discharging of the batteries. This approach is not only practical but also highly versatile, as it is compatible with all converters as long as the Droop voltage can be changed remotely, and a current measurement is provided to a central controller. No further programming access to the DC/DCs is necessary. There is no need for nonlinear or different-valued Droop resistances for charging and discharging. The balancing approach is validated via simulation in MATLAB/Simulink 2024a.The results show that the proposed approach achieves SoC balancing without degrading the dynamic performance of the grid. The delays added by the slower communication with the central controller have a minimal impact on performance.

Export metadata

Additional Services

Search Google Scholar
Metadaten
Author:Elias BerschneiderORCiD, Bernhard WagnerORCiD, Markus MeindlORCiD, Bernd EckardtORCiD
DOI:https://doi.org/10.3390/batteries11110411
ISSN:2313-0105
Parent Title (English):Batteries
Publisher:MDPI AG
Document Type:Article
Language:English
Reviewed:Begutachtet/Reviewed
Release Date:2025/12/02
Volume:11
Issue:11
Article Number:411
Pagenumber:17
institutes:Fakultät für Elektrotechnik Feinwerktechnik Informationstechnik
Research Themes:Energie & Ressourcen
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International
Verstanden ✔
Diese Webseite verwendet technisch erforderliche Session-Cookies. Durch die weitere Nutzung der Webseite stimmen Sie diesem zu. Unsere Datenschutzerklärung finden Sie hier.