Open AccessExperimental study on inter‐laminar short‐circuit faults at random positions in laminated magnetic cores
Author(s) -
Hamzehbahmani Hamed,
Anderson Philip,
Jenkins Keith,
Lindenmo Magnus
Publication year - 2016
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2015.0585
Subject(s) - laminar flow , power (physics) , electronic circuit , fault (geology) , short circuit , magnetic circuit , electronic engineering , materials science , computer science , topology (electrical circuits) , engineering , mechanics , structural engineering , electrical engineering , geology , electromagnetic coil , physics , quantum mechanics , voltage , seismology
Inter‐laminar short‐circuit faults between the laminations of electrical machines, and other magnetic devices, have been one of the major challenges for the suppliers and customers of electrical steels. Extra power losses caused by inter‐laminar faults depend on many factors including the location of the fault points. In this study, fundamental definitions and concepts of inter‐laminar short‐circuit faults, effect of inter‐laminar faults on configuration of the magnetic cores and FEM verification are presented. Experimental works were performed to study the effect of inter‐laminar faults with different configurations on the total power loss to distinguish and locate the critical and destructive faults. In the relevant studies, artificial short circuits of different configurations were applied between laminations of packs of four Epstein size laminations of 3% grain oriented silicon steel. Extra power losses caused by the inter‐laminar faults were measured and the results were analysed.