In the frame of the More Electrical Aircraft, the use of more Power Electronic (PE) systems in future aircrafts will surely lead to savings in aircraft total power consumption and thus to environmental performance gain. The main challenges here are to increase the power density of the electricalsystems in order to be competitive with the standard non electrical technologies, to reduce weight, to save fuel, to increase the overall efficiency and to reduce pollutions. The demand of weight decrease, especially for power electronic systems, implies new technology developments in all the part of a PE system: converter topologies, power semiconductors, materials, filtering, lightweight housing... Indeed, regarding the housing of the PE devices, due to the severe environment of the aerospace equipment (condensation, low pressure, high temperature variation, humidity), a standard solution is to provide a hermetically sealed product. This leads to reliability issues, weight and price increase. Using a nonhermetically sealed housing in contrast highlights partial discharges, especially at high altitude. Thus, in this paper, partial discharges identification procedures are presented and design rules are extracted from the results to ensure that these phenomena will not appear or will be minimized.
Partial discharges identification and characterization: Design rules for aerospace power electronic systems
2012
6 Seiten, 11 Bilder, 7 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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