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Method and controller for determining an undesired condition in an electrical drive system
ABB Corporate Research.
ABB Corporate Research.
ABB Corporate Research.
ABB Corporate Research.
2016 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

A method for determining an undesired condition in an electrical drive system including an electrical machine and an electrical drive, wherein the method includes a) obtaining a measured signal of an electrical or mechanical parameter, b) obtaining a frequency spectrum of the measured signal, that contains a measured frequency component, c) determining whether the measured frequency component is within a predetermined distance from a trend line, which trend line is associated with only one specific frequency component of the electrical or mechanical parameter present during a specific undesired condition, d) on the condition that the measured frequency component is within the predetermined distance from the trend line increasing a counter associated with the trend line, e) repeating steps a) to d), wherein in case the counter reaches a predetermined number determining that the electrical drive system is subjected to the undesired condition associated with the trend line.

Place, publisher, year, edition, pages
2016.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-234999OAI: oai:DiVA.org:kth-234999DiVA, id: diva2:1248392
Patent
US 9829540B2 (2017-11-28)
Note

QC 20181207

also published as CN106248131 (A), EP3104152 (A1), US2016356854 (A1)

Available from: 2018-09-14 Created: 2018-09-14 Last updated: 2018-12-07Bibliographically approved

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Peretti, Luca
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