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

Patent metadata

Field	Value
Publication number	US-12476456-B2
Application number	US-202318838163-A
Country	US
Kind code	B2
Filing date	Feb 6, 2023
Priority date	Feb 14, 2022
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

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.

First claim

The invention claimed is:

1 . A DC electrical power distribution device for an aircraft propulsion duct, the power distribution device comprising:
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 for connecting the source to the propulsion assembly; 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, the main power supply line extending between input terminals configured to be connected to the source and output terminals configured to be connected to the propulsion assembly, the main power supply line comprising a power bus connected to the output terminals and connected to the input terminals by means of the main switching means and fast switching means, and the secondary power supply line being connected to the bus by means of secondary switching means and including input terminals configured to be connected to input terminals of the secondary power supply line of the other device; first control means configured to open the main switching means and the fast switching means; second control means configured to close the secondary switching means during the detection of a failure of the propulsion assembly, of the main power supply line, or of the source; and charging terminals connected between the input terminals and the main switching means or between the main switching means and the fast switching means by charge switching means, the charging terminals configured to charge the reversible power supply source from a charger, wherein the first control means are further configured to close the charge switching means in order to charge the reversible source.

2 . A propulsion system comprising at least two identical devices according to claim 1 , wherein the input terminals of the secondary power supply line of a first device are connected to the input terminals of the secondary power supply line of the second device.

3 . An aircraft comprising a propulsion system according to claim 2 .

Assignees

• Safran Electrical & Power

Inventors

• Baque Franck
• Cornu Quentin
• Guerin Fabrice
• Percheron Guillaume
• Renotte Alexis

Classifications

• H02J2105/32

  for aircrafts · CPC title

• B64D2221/00

  Electric power distribution systems onboard aircraft · CPC title

• B64D47/00

  Equipment not otherwise provided for · CPC title

• H02J1/086

  for providing alternative feeding paths between load or loads and source or sources when the main path fails · CPC title

• H02J1/084 Primary

  for selectively connecting the load or loads to one or several among a plurality of power lines or power sources · CPC title