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Critical aspects of demagnetization faults in direct drive permanent magnet generators for renewables

Gyftakis Konstantinos, Skarmoutsos Giorgos, Barajas-Solano Ignacio, Burchell Joseph, Mueller Markus

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URIhttp://purl.tuc.gr/dl/dias/B241DC63-CFE1-4243-B18E-9B4A7C62B814-
Identifierhttps://doi.org/10.1109/ECCE50734.2022.9947661-
Identifierhttps://ieeexplore.ieee.org/document/9947661-
Languageen-
Extent7 pagesen
TitleCritical aspects of demagnetization faults in direct drive permanent magnet generators for renewablesen
CreatorGyftakis Konstantinosen
CreatorΓυφτακης Κωνσταντινοςel
CreatorSkarmoutsos Giorgosen
CreatorBarajas-Solano Ignacioen
CreatorBurchell Josephen
CreatorMueller Markusen
PublisherInstitute of Electrical and Electronics Engineersen
Content SummaryDemagnetization of permanent magnet machines is a fault that evolves over time leading to an eventual catastrophic failure. This condition is of particular interest in renewables, with emphasis on remote applications such as offshore wind, tidal and wave energy harvesting. Moreover, the demagnetization fault can be either uniform or non-uniform. The strong majority of research papers are focusing on non-uniform demagnetization and typically study the case of a single faulty magnet. This is because, the uniform demagnetization does not create harmonics that can be detected with spectral methods. Despite the above, the study of single magnet demagnetization studies have been criticized due to being unrealistic to describe most practical cases where permanent magnet machines are subjected to demagnetization due to overloading and/or overheating conditions and leading to uniform demagnetization. This paper sheds some light into such theories, while studying a, realistically induced in the lab, demagnetization case of a direct-drive C-GEN permanent magnet generator.en
Type of ItemΠλήρης Δημοσίευση σε Συνέδριοel
Type of ItemConference Full Paperen
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2024-08-23-
Date of Publication2022-
SubjectCondition monitoringen
SubjectDemagnetizationen
SubjectFault diagnosisen
SubjectPermanent magnet machinesen
SubjectDirect drive generatorsen
Bibliographic CitationK. N. Gyftakis, G. Skarmoutsos, I. Barajas-Solano, J. Burchell and M. Mueller, "Critical aspects of demagnetization faults in direct drive permanent magnet generators for renewables," in Proceedings of the 2022 IEEE Energy Conversion Congress and Exposition (ECCE 2022), Detroit, MI, USA, 2022, doi: 10.1109/ECCE50734.2022.9947661.en

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