US 11,876,440 B2
Fault-tolerant operation of a current converter
Markus Pfeifer, Nuremberg (DE)
Assigned to Siemens Aktiengesellschaft, Munich (DE)
Appl. No. 18/020,864
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Jun. 25, 2021, PCT No. PCT/EP2021/067449
§ 371(c)(1), (2) Date Feb. 10, 2023,
PCT Pub. No. WO2022/033755, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. 20190711 (EP), filed on Aug. 12, 2020.
Prior Publication US 2023/0246540 A1, Aug. 3, 2023
Int. Cl. H02M 1/32 (2007.01); H02M 7/219 (2006.01)
CPC H02M 1/325 (2021.05) [H02M 7/219 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for operating an electronic module comprising at least three semiconductor elements, the electronic module comprising at least six semiconductor elements disposed in three half-bridges, each having an upper branch and a lower branch, the method comprising:
passing a current, in the event of a defect in one of the semiconductor elements, via the defective semiconductor element by selectively activating at least two of the remaining semiconductor elements in order to destroy or open-circuit the defective semiconductor element or a weak point associated with the defective semiconductor element, wherein this current is distributed between the selectively activated semiconductor elements;
selectively actuating, in the event of a defect in one of the semiconductor elements in the upper branch in one of the half-bridges, the two semiconductor elements in the upper branch of the other two half-bridges in order to destroy or open-circuit the defective semiconductor element or the weak point associated with the defective semiconductor element; and
selectively actuating, in the event of a defect in one of the semiconductor elements in the lower branch in one of the half-bridges, the two semiconductor elements in the lower branch of the other two half-bridges in order to destroy or open-circuit the defective semiconductor element or the weak point associated with the defective semiconductor element.