Conference Paper

Highly efficient SiC inverter for aircraft application with innovative thermal management

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Abstract

Power electronic systems for aircraft applications gain more and more interest due to increasing gravimetric power density on power stage level by utilizing advantages of WBG devices. However, the overall system design has to be optimized, including housing, mechatronic design and thermal management. This paper presents the power stage design of a highly efficient SiC drive inverter with fail-operational capabilities for a small electric aircraft utilizing only the laminar flow given by the air speed on the surface and thermal capacities of the inverter housing for cooling means.

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... The first concept of the Alice aircraft by Eviation had wingtip motors that moved heat to the streamlined surface of the nacelle where it was convected away Zivan (2019). Another example of an electric aircraft that uses this basic form of a heat exchanger is the aircraft concept by iSight of Fraunhofer, which mounts the hot motor controller components directly on the motor nacelle Bentheimer et al. (2019). The X-57 high lift motor also uses this method to cool both the high lift motors and their motor controllers . ...
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