US 12,111,709 B2
Detection of a failure of a power module based on operating conditions
Radoslava Mitova, Meylan (FR); Alain Dentella, Beaucroissant (FR); and Pierre-Yves Boyer, Voiron (FR)
Assigned to Schneider Electric Industries SAS, Rueil Malmaison (FR)
Filed by Schneider Electric Industries SAS, Rueil Malmaison (FR)
Filed on Jul. 24, 2020, as Appl. No. 16/937,760.
Claims priority of application No. 19306001 (EP), filed on Aug. 2, 2019.
Prior Publication US 2021/0034129 A1, Feb. 4, 2021
Int. Cl. G06F 1/28 (2006.01); H03K 17/08 (2006.01)
CPC G06F 1/28 (2013.01) [H03K 17/08 (2013.01); H03K 2017/0806 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for detecting a failure of a power module, the method comprising the following operations:
storing at least one model comprising regular temperature values associated with different operating conditions of the power module, the regular temperature values of the at least one model represented by at least one first predetermined curve and at least one second predetermined curve that is different from the at least one first predetermined curve;
checking whether the at least one stored model is up to date, determining that the at least one stored model is not up to date, and replacing the at least one stored model with an updated version thereof after determining that the at least one stored model is not up to date;
acquiring at least a first temperature value from a first temperature sensor located in the vicinity of the power module;
determining current operating conditions of the power module;
comparing the current operating conditions and at least the first temperature value with the at least one stored model;
based on the comparison, determining a failure of the power module.