Safran Electrical & Power

Safran Power Units

Alexis Renotte

Benoit Michaud

Fabien Silet

Christophe Castelli

Julien Marc Nicolas Rambaud

Benoit Linck

Pierre-Julien Sonnette

Guillaume Porte

Quentin Cornu

Guillaume Percheron

Fabrice Guerin

Franck Baque

A DC electrical power distribution device for an aircraft propulsion duct having a main power supply line configured to supply at least one propulsion assembly of the propulsion duct with power from a high-voltage DC electrical power supply source and including main switching means and fast switching means for connecting the source to the propulsion assembly. The device can include a secondary power supply line configured to be connected to another distribution device and configured to supply the propulsion assembly with power from the other device when the main switching means are open.

DC electrical power distribution device, and associated propulsion system and aircraft

A cooling system for a drive device with several electric machines, the cooling system including a hydraulic circuit for a coolant including a cooling part in a gearbox of the drive device for cooling the gearbox, and an air/coolant heat exchanger including cooling walls forming channels for circulating coolant for the cooling thereof, an air cooling circuit including a plurality of fans, rotationally coupled to the gearbox, a cooling part between the cooling walls of the air/liquid heat exchanger, wherein the air sucked in and propelled by the fans circulates by sweeping over the cooling walls in order to cool them.

System for cooling a drive device with several electric machines

An aircraft propulsion system includes a turbomachine and The propulsion system further includes at least one first energy source (B) capable of delivering a DC voltage and

Aircraft propulsion system

Overvoltage protection device for a variable-speed and constant-frequency electrical energy generation system includes at least one DC current generator connected, via a DC current bus to the input terminals of at least one inverter and to at least one regulation module for regulating the output voltage of the at least one inverter. The device includes a circuit including at least one switch in series with a resistor, the circuit being connected between the input terminals of the at least one inverter, at least one measurement sensor for measuring the DC voltage across the input terminals of the at least one inverter, a control circuit connected to the at least one measurement sensor and able to receive a voltage measured by the at least one measurement sensor, compare the measured voltage against a threshold and command the closure of the at least one switch if the measured voltage is greater than the threshold, and command opening thereof if not.

Overvoltage protection for a variable-speed and constant-frequency electrical energy generation system

Growing community of inventors

Moissy-Cramayel, France

Alexis Renotte