US 12,267,989 B2
Method and system for controlling electric drive system according to predicted temperature of inverter busbar
Monty J. Anderson, Boise, ID (US); William Robert Brown, Huntington Woods, MI (US); and Papiya Bagchi, Northville, MI (US)
Assigned to FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed by FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed on Feb. 10, 2022, as Appl. No. 17/668,494.
Prior Publication US 2023/0255006 A1, Aug. 10, 2023
Int. Cl. H02P 21/22 (2016.01); H02P 27/06 (2006.01); H05K 7/20 (2006.01)
CPC H05K 7/20945 (2013.01) [H02P 21/22 (2016.02); H02P 27/06 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electric drive system comprising:
an inverter including a power switch and a busbar; and
a controller configured to reduce power output of the inverter while a temperature of the busbar, predicted from a thermal equation given a sensed temperature of the power switch of the inverter, a sensed current output of the inverter, and values of parameters of the thermal equation obtained from a thermal model of the busbar, is greater than a threshold to thereby maintain busbar temperature lower than the threshold.