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Synergies and Trade-Offs in Hybrid Propulsion Systems Through Physics-Based Electrical Component Modeling
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.
Department of Mechanical Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.
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2024 (English)In: Journal of engineering for gas turbines and power, ISSN 0742-4795, E-ISSN 1528-8919, Vol. 146, no 1, article id 011005Article in journal (Refereed) Published
Abstract [en]

Hybrid-electric propulsion is recognized as an enabling technology for reducing aviation’s environmental impact. In this work, a serial/parallel hybrid configuration of a 19-passenger commuter aircraft is investigated. Two underwing-mounted turboprop engines are connected to electrical branches via generators. One rear fuselage-mounted electrically driven ducted fan is coupled with an electric motor and respective electrical branch. A battery system completes the selected architecture. Consistency in modeling accuracy of propulsion systems is aimed for by development of an integrated framework. A multipoint synthesis scheme for the gas turbine and electric fan is combined with physics-based analytical modeling for electrical components. Influence of turbomachinery and electrical power system design points on the integrated power system is examined. An opposing trend between electrical and conventional powertrain mass is driven by electric fan design power. Power system efficiency improvements in the order of 2% favor high-power electric fan designs. A trade-off in electrical power system mass and performance arises from oversizing of electrical components for load manipulation. Branch efficiency improvements of up to 3% imply potential to achieve battery mass reduction due to fewer transmission losses. A threshold system voltage of 1 kV, yielding 32% mass reduction of electrical branches and performance improvements of 1–2%, is identified. This work sets the foundation for interpreting mission-level electrification outcomes that are driven by interactions on the integrated power system. Areas of conflicting interests and synergistic opportunities are highlighted for optimal conceptual design of hybrid powertrains.

Place, publisher, year, edition, pages
American Society of Mechanical Engineers (ASME) , 2024. Vol. 146, no 1, article id 011005
Keywords [en]
Conceptual design, Economic and social effects, Efficiency, Electric loads, Electric power transmission, Electric propulsion, Engines, Environmental technology, Machine design, Efficiency improvement, Electric fans, Electrical components, Electrical power system, Fan designs, Integrated Power Systems, Mass reduction, Performance, Physics-based, Trade off, Environmental impact
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-64855DOI: 10.1115/1.4063381Scopus ID: 2-s2.0-85177224156OAI: oai:DiVA.org:mdh-64855DiVA, id: diva2:1815486
Available from: 2023-11-29 Created: 2023-11-29 Last updated: 2023-11-29Bibliographically approved

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Bermperis, DimitiosKavvalos, MavroudisVouros, StavrosKyprianidis, Konstantinos

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