Patent ID: 7538521

Claim:
An arrangement for electrically powering an aircraft, the arrangement comprising: at least one first generator supplying an electrical voltage on being driven by an engine of the aircraft; an electrical power distribution network on board the aircraft connected to the first generator via a power supply line to receive the electrical voltage produced by the first generator; at least one second generator supplying an electrical voltage on being driven by an engine of the aircraft; and an electrical power distribution network of the aircraft engine that is distinct from the on-board network and that serves to supply electrical power to electrical equipment situated in the aircraft engine and/or in the environment of the engine, the engine network comprising: at least one bus for distributing DC electrical voltage for the electrical equipment; and a power supply circuit having a first input connected to the on-board network to receive a voltage supplied by the on-board network, a second input connected to the second generator to receive the electrical voltage supplied thereby, a voltage converter connected to the second input, and a selector circuit for delivering a voltage over the distribution bus, which voltage is supplied from the voltage received on the first input, or is supplied by the converter, depending on the amplitude of the voltage supplied by the second generator.