Overview
FrançaisABSTRACT
This article sets out the current state of the art and the technologies and strategies of aircraft electrification. We look at electrification for avionics and for propulsion, from “full electric” demonstrations to hybridization of regional aircraft in the next 15–20 years, from storage technology to the complete system (power electronics and electric power train) with a redefined aircraft platform (low-voltage–- high-voltage) and impact on maintenance.
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Read the articleAUTHORS
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Florence FUSALBA: Program Manager - CEA TECH – LITEN, Grenoble, France
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Jean ORIOL: Industrial Partnership Manager - CEA-CTREG-DNAQ, Pessac, France
INTRODUCTION
Depending on the class of electric aircraft and its degree of electrification, which can range from powering on-board equipment to propulsion, different power systems can be envisaged and integrated with different electrical architectures.
While the performance of energy storage technologies can now be used to initiate the commercial development of all-electric light aircraft, electric hybridization strategies for the propulsion of commercial aircraft such as those used on regional routes are already being studied.
Whatever their mission, from auxiliary power supply to propulsion, the key parameters for energy storage systems are safety, reliability, energy/power ratio, service life (cycling and calendar) and the level of certification required. In particular, the energy/power ratio required differs between all-electric and hybrid-electric applications, thus conditioning technology selection.
The safety performance of the storage system needs to be qualified according to standards not only for aeronautical applications (DO), but also for handling and transport on land (UN 38.3). Standards for electric propulsion in the aeronautical sector are currently being defined by the SAE International working group.
This article reviews the current state of the art and details the aircraft electrification technologies/strategies currently under study. It looks at the storage technology, the complete system (power electronics and electric drive train), the aircraft platform (low-voltage-high-voltage), maintenance and the business model for electrification.
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KEYWORDS
energy storage | electric aircrafts | hybridation of aircrafts | electric power train
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Aircraft electrification
Bibliography
Websites
Air transport and the CO2 issue: the challenges of ETS mechanisms and biojets, Panorama, 2013, http://www.ifp.fr
Global CO 2 emissions and reduction targets, ...
Events
More Electric Aircraft – Bordeaux Convention Center https://www.see.asso.fr/manifestation/16234_mea2017
More Electric Aircraft Europe 2017, Germany October 17-19 https://more-electric-aircraft.iqpc.de/
...Standards and norms
IATA http://www.iata.org/whatwedo/cargo/dgr/Pages/lithium-batteries.aspx
Guidance on Testing and Installation of Date : 10/15/15 AC No : 20-184 ; Rechargeable Lithium Battery and Battery Initiated By : AIR-133 ; Systems on Aircraft,
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