ELECTRICAL PROPULSION SYSTEM FOR AN AERIAL VEHICLE, AERIAL VEHICLE INCLUDING SUCH AN ELECTRICAL PROPULSION SYSTEM

An electrical propulsion system for an aerial vehicle, including a plurality of electric motors, a plurality of power supply batteries for supplying power to the electric motors, and an electrical power distribution network connecting the power supply batteries to the electric motors. The electrical propulsion system can further include a backup battery configured to be connected to the electric motors by the electrical power distribution network. The electrical propulsion system can be configured to supply power to the electric motors according to at least two different power supply modes: a normal power supply mode, in which the backup battery does not supply power to any of the electric motors, and a backup power supply mode, in which the backup battery supplies power to at least one electric motor.