US 11,735,993 B2
Analyzing an operating condition of a power converter
Angus Bryant, Cambridge (GB)
Assigned to MASCHINENFABRIK REINHAUSEN GMBH, Regensburg (DE)
Appl. No. 17/276,877
Filed by Maschinenfabrik Reinhausen GmbH, Regensburg (DE)
PCT Filed Sep. 19, 2019, PCT No. PCT/EP2019/075228
§ 371(c)(1), (2) Date Mar. 17, 2021,
PCT Pub. No. WO2020/058436, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 18196074 (EP), filed on Sep. 21, 2018.
Prior Publication US 2022/0037993 A1, Feb. 3, 2022
Int. Cl. H02M 1/00 (2006.01); H02M 1/32 (2007.01); G01K 7/01 (2006.01); G01R 31/42 (2006.01); H02M 3/156 (2006.01)
CPC H02M 1/00 (2013.01) [G01K 7/01 (2013.01); G01R 31/42 (2013.01); H02M 1/327 (2021.05); H02M 3/156 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for analyzing an operating condition of a power converter, the method comprising:
providing a sample clock signal;
determining repeatedly at least one operating parameter of a power semiconductor device of the power converter,
wherein the repetitions of determining the at least one operating parameter are synchronous to the sample clock signal, and
wherein for a given repetition of the determination of the at least one operating parameter, determining the at least one operating parameter comprises measuring the at least one operating parameter or identifying a value for the at least one operating parameter from a previous repetition depending on a switching behavior of the power converter within the given repetition; and
determining the operating condition of the power converter depending on the at least one determined operating parameter,
wherein the sample clock signal is asynchronous to the operation of the power converter such that the sample clock signal is asynchronous to a base clock signal of the power converter.