US 12,360,173 B2
Monitoring of a converter
Cornel-Marian Rosca, Deining (DE); Stefan Kögl, Nuremberg (DE); and Fabian Hecht, Lauf (DE)
Assigned to Innomotics GmbH, Nuremberg (DE)
Appl. No. 18/031,078
Filed by Innomotics GmbH, Nuremberg (DE)
PCT Filed Oct. 15, 2021, PCT No. PCT/EP2021/078618
§ 371(c)(1), (2) Date Apr. 10, 2023,
PCT Pub. No. WO2022/079242, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 20201982 (EP), filed on Oct. 15, 2020.
Prior Publication US 2023/0305076 A1, Sep. 28, 2023
Int. Cl. G01R 31/40 (2020.01); G05B 23/02 (2006.01)
CPC G01R 31/40 (2013.01) [G05B 23/0221 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for monitoring a converter, the method comprising:
operating the converter;
generating individual warning messages related to the operation of the converter, the converter having at least two types of warning messages, with a first type of the at least two types of warning messages depending on a type of the converter, and with a second type of the at least two types of warning messages defined by a user and specific for event-monitoring in an operating environment of the converter;
grouping the individual warning messages of the first and second types into a plurality of different groups in correspondence with parts of the converter related to an error type of the converter, wherein the parts of the converter comprise an input a transformer cells, a controller an output cooling, a bypass, and a power module, and the individual warning messages are grouped into a first group with warning messages related to the input and transformer of the converter a second group with warning messages related to the cells, controller and output of the converter a third group related to the cooling of the converter, and a fourth group related to the bypass of the power module in the converter;
applying a plurality of different rules to the plurality of different groups, with each of the plurality of different rules relating to an occurrence of one or more warning messages in one or more of the plurality of different groups, wherein the plurality of different rules comprises a first rule in which at least one individual warning message is present in each of the first group, the second group, and the third group; a second rule in which at least one individual warning message is present in each of the first group and the second group; a third rule in which at least one individual warning message is present in each of the second and third groups; a fourth rule in which at least three individual warning messages are present in at least one of the first group, the second group, and the third group; and a fifth rule in which at least one individual warning message is present in the fourth group;
activating a prefault warning to predict an imminent error case according to one of the applied plurality of different rules when the one rule can be applied due to an occurrence of the one or more warning messages in the one or more groups;
concluding an error case in the converter related to the prediction of the imminent error case based on the activated prefault warning;
generating a message about prevention of the error case; and
taking countermeasures to prevent the error case.