Open AccessDevelopment of a new approach to core quality assessment of modern electrical machines
Author(s) -
Hamzehbahmani Hamed
Publication year - 2019
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2018.5276
Subject(s) - hysteresis , electrical steel , magnetic hysteresis , laminar flow , materials science , core (optical fiber) , magnetic flux , mechanical engineering , electronic engineering , magnetic field , electrical engineering , engineering , mechanics , condensed matter physics , physics , composite material , magnetization , quantum mechanics
Hysteresis behaviour of the magnetic materials is an interesting physical concept and has important practical applications in physics and engineering. In this study, a new approach is developed to evaluate the quality of magnetic cores, based on the measured dynamic hysteresis loop. In this study, artificial inter‐laminar faults of different configurations were applied on stacks of four standard Epstein size laminations of 3% grain oriented silicon steel. Dynamic hysteresis loop of the samples was measured and analysed over a range of magnetising frequency and flux density, to calculate the extra power losses caused by the artificial faults. The results show an accurate evaluation of the extra power loss compared to the bulk measurement, with a maximum difference of <4%.