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Impact of Current Density and Cooling on the Weight Balance of Electrical Propulsion Drives for Aviation
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| Veröffentlicht in: | Energies 2020, 13(22), 6149; https://doi.org/10.3390/en13226149 |
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| Personen und Körperschaften: | , , |
| Titel: | Impact of Current Density and Cooling on the Weight Balance of Electrical Propulsion Drives for Aviation/ by Jan Hoffmann, Wolf-Rüdiger Canders and Markus Henke |
| Ausgabe: | Online-Ausgabe |
| Format: | E-Book Sonderdruck |
| Sprache: | Englisch |
| veröffentlicht: |
[Basel]
MDPI
2020
Braunschweig Universitätsbibliothek 2020 |
| Gesamtaufnahme: |
Impact of Current Density and Cooling on the Weight Balance of Electrical Propulsion Drives for Aviation; 2020, 13(22), 6149; https://doi.org/10.3390/en13226149
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| Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
| Zusammenfassung: | Through applying an exemplary design study, the dependencies between current density, temperatures, and weight in an electrical drive system for a small range aircraft with conventional electrical fan or propeller drives are evaluated. This study applies a combined numerical (Finite Element Method FEM) and analytical approach to the machine design, calculation of temperatures, and cooling system design (cooler, pumps, piping). A design scenario was defined using start and climb flight in a warm tropical surrounding as the worst load case. The design has to move between two fixed temperature limits: The maximum allowable temperature in the machine insulation and the ambient temperature. The implemented method facilitates a comparatively fast-medium depth design of the drive system. The derived results show, in fact, a minimum of weight at a certain current density, which is one of the key interests for the designers of the electrical machine. The main influences on this minimum are the temperature drops in the machine, the heat transfer to the cooling fluid, the heat transfer to the cooler wall, and the remaining heat rejection to the ambient. Method and results are transferable to other types of airplanes with di erent ratings. |
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| Umfang: | 1 Online-Ressource |
| DOI: | 10.3390/en13226149 |