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Predesign Considerations for the DC Link Voltage Level of the CENTRELINE Fuselage Fan Drive Unit

Biser, Stefan; Wortmann, Guido; Ruppert, Swen; Filipenko, Mykhaylo; Noe, Mathias; Boll, Martin

Abstract:
Electric propulsion (EP) systems offer considerably more degrees of freedom (DOFs) within the design process of aircraft compared to conventional aircraft engines. This requires large, computationally expensive design space explorations (DSE) with coupled models of the single components to incorporate interdependencies during optimization. The purpose of this paper is to exemplarily study these interdependencies of system key performance parameters (KPIs), e.g., system mass and efficiency, for a varying DC link voltage level of the power transmission system considering the example of the propulsion system of the CENTRELINE project, including an electric motor, a DC/AC inverter, and the DC power transmission cables. Each component is described by a physically derived, analytical model linking specific subdomains, e.g., electromagnetics, structural mechanics and thermal analysis, which are used for a coupled system model. This approach strongly enhances model accuracy and simultaneously keeps the computational effort at a low level. The results of the DSE reveal that the system KPIs improve for higher DC link voltage despite slightly inferior performance of motor and inverter as the mass of the DC power transmission cable has a major share for a an aircraft of the size as in the CENTRELINE project. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000129495
Veröffentlicht am 08.02.2021
Originalveröffentlichung
DOI: 10.3390/aerospace6120126
Scopus
Zitationen: 5
Web of Science
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 2226-4310
KITopen-ID: 1000129495
Erschienen in Aerospace
Verlag MDPI
Band 6
Heft 12
Seiten Art. Nr.: 126
Vorab online veröffentlicht am 20.11.2019
Schlagwörter electric propulsion, aircraft, CENTRELINE, DC link voltage level, analytical model, design space exploration
Nachgewiesen in Scopus
Web of Science
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