Open AccessInter‐laminar fault analysis of magnetic cores with grain‐oriented electrical steels under harmonic distortion magnetisations
Author(s) -
Hamzehbahmani Hamed
Publication year - 2020
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2019.0191
Subject(s) - materials science , distortion (music) , laminar flow , total harmonic distortion , electrical engineering , physics , engineering , mechanics , voltage , optoelectronics , amplifier , cmos
Inter‐laminar faults (ILFs) have major impacts on the overall performance of the electrical machines and power transformers, among which extra power loss and hence lower efficiency could be highlighted. This study presents an in depth analysis on energy loss and energy loss components of stacks of grain‐oriented electrical steels subjected to different kinds of ILFs, under sinusoidal and non‐sinusoidal inductions. Practical methods are developed to monitor quality of the magnetic cores, based on the measured static and dynamic hysteresis loops. The experimental results showed that, ILFs have a significant impact on the dynamic performance and dynamic energy loss of the cores, while their impact on the hysteresis loss is negligible. Furthermore, they become more destructive under non‐sinusoidal inductions, and hence condition monitoring of the magnetic cores is more important for these applications.