Pump actuating device, and associated pumping system, aircraft and fuel supply method

An actuating device intended to drive at least one pump of a system for pumping fuel from a fuel circuit towards a fuel injection device of an engine, the actuating device comprising a motor rotating electric machine, a generator rotating electric machine, an electrical energy inverter, a switching member and a control member,

• the motor rotating electric machine comprising a first rotor, intended to be mechanically coupled to the at least one pump for actuation thereof, and a first stator comprising at least one input stator winding,
• the generator rotating electric machine comprising a second rotor, intended to be mechanically coupled to a shaft of the engine forming a drive shaft, and a second stator comprising at least one output stator winding, each output stator winding being associated to a respective input stator winding of the motor rotating electric machine,
• the inverter comprising at least one output, each output of the inverter being associated to a respective input stator winding of the motor rotating electric machine,
• the control member being configured to receive speed information relating to a speed of the engine, and to control the switching member in order to selectively connect each input stator winding of the motor rotating electric machine:
• to the corresponding output stator winding if the speed of the engine is higher than or equal to a predetermined speed;
• at the corresponding output of the inverter, otherwise.