Engine having power bus fault short circuit control with a...

B - Operations – Transporting – 64 – D

Patent

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Details

B64D 41/00 (2006.01) B64D 33/00 (2006.01) F01D 15/10 (2006.01) H02H 7/06 (2006.01) H02K 7/18 (2006.01)

Patent

CA 2638645

An aircraft electrical system comprises a generator to be driven as part of a gas turbine engine. The generator supplies electrical power to a plurality of accessories associated with the gas turbine engine, and to an aircraft power bus in parallel to the supply to the accessories. A control detects a short circuit on the aircraft power bus. When a short circuit is detected on the aircraft power bus, a switch is driven open to disconnect the aircraft power bus from the generator. In this manner, the power will continue to be delivered to the plurality of accessories. In a separate feature, a control voltage is provided by an auxiliary permanent magnet generator to a voltage regulator for the main generator.

Un système électrique d'aéronef comprenant une génératrice devant être entraînée par une turbine à gaz. La génératrice alimente en électricité une pluralité d'accessoires de la turbine à gaz, ainsi qu'une barre omnibus d'alimentation de l'aéronef raccordée en parallèle avec le circuit d'alimentation des accessoires. Une commande détecte un court-circuit de la barre omnibus d'alimentation de l'aéronef. Lorsqu'un court-circuit est détecté à la barre omnibus, un sectionneur s'ouvre afin de débrancher la barre omnibus de la génératrice. De cette façon, les nombreux accessoires peuvent continuer à être alimentés en électricité. Dans un montage distinct, une tension de commande est débitée par une génératrice auxiliaire à aimant permanent à un régulateur de tension pour la génératrice principale.

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