Open AccessOptimal sizing of hybrid electric propulsion system for eVTOL
Author(s) -
Taher Marzougui,
Kolja Neuhaus,
Laurent Labracherie,
Gianmarco Scalabrin
Publication year - 2022
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1226/1/012070
Subject(s) - sizing , propulsion , automotive engineering , converters , supercapacitor , energy management , computer science , energy storage , power (physics) , aviation , engineering , aerospace engineering , electrical engineering , energy (signal processing) , voltage , art , chemistry , statistics , physics , mathematics , electrode , electrochemistry , quantum mechanics , visual arts
Electric propulsion unmanned aerial vehicles (UAVs) attract much attention in aviation industry, with electric vertical take-off and landing (eVTOL) aircraft tending to gain ground. The current development of hybrid eVTOL aircraft intended for urban air mobility is facing many technical challenges. Among these challenges rises the optimal sizing of its hybrid power system (HPS). The latter requires an energy management strategy (EMS). In this paper, the adopted management strategy is based on filtering techniques using frequency-separation. The EMS ensures the optimal distribution of the load power requirement between the different sources while considering their limits. In addition, the optimal sizing allows to strengthen the complementarity between sources and to indirectly reduce their mass. In this work, the studied HPS consists of a fuel cell associated with an energy storage system (ESS), composed of lithium polymer batteries (Li-Po) and supercapacitors. The onboard sources are connected in parallel on the power bus through three DC-DC converters. The results of this study are presented and discussed to highlight the relevance of the proposed approach.