US 12,304,315 B2
Electrical converter
David R. Trainer, Derby (GB); Francisco Javier Chivite Zabalza, Stafford (GB); and Mark Sweet, Chesterfield (GB)
Assigned to Rolls-Royce plc
Filed by ROLLS-ROYCE plc, London (GB)
Filed on Oct. 18, 2022, as Appl. No. 17/968,254.
Claims priority of application No. 2115686 (GB), filed on Nov. 2, 2021.
Prior Publication US 2023/0133771 A1, May 4, 2023
Int. Cl. H02H 3/00 (2006.01); B60L 15/00 (2006.01); H02M 3/158 (2006.01); H02M 5/458 (2006.01)
CPC B60L 15/007 (2013.01) [H02M 3/158 (2013.01); H02M 5/458 (2013.01); B60L 2200/10 (2013.01); B64D 2221/00 (2013.01); H02J 2310/44 (2020.01)] 17 Claims
OG exemplary drawing
 
1. An electrical converter for an aircraft, comprising:
a converter circuit having a plurality of transistors configured to convert an input electrical supply to an output electrical supply; and
a controller configured to receive an input altitude signal,
wherein the controller is configured to adjust a gate resistance of each of the plurality of transistors based on the input altitude signal to control a junction temperature of the plurality of transistors according to the received input altitude signal to reduce an effect of increased incident cosmic radiation on the converter circuit,
wherein adjusting the gate resistance of each of the plurality of resistors based on the input altitude signal includes:
calculating a desired junction temperature from the input altitude signal;
comparing a calculated or measured junction temperature to the calculated desired junction temperature; and
selecting a gate resistance value based on a difference between the calculated or measured junction temperature and the calculated desired junction temperature.