Interlaminar faults in a GOFeSi laminated magnetic core: measurements and simulations

Bahmani, Hamed

Abstract

Grain-oriented silicon steel (GOFeSi) laminations are massively used as magnetic cores in electrical energy converters (motors and transformers). Edge burrs can appear during the manufacturing process and be at the origin of interlaminar faults (ILFs). In a recent paper, we described an efficient simulation method for GOFeSi laminations. This technique simultaneously solves the magnetic diffusion equation and a fractional differential equation for the material law. It produces excellent results across a large bandwidth of frequencies and is limited to only two parameters for the dynamic contribution. This study extends this method to predict the influence of interlaminar faults. We successfully reproduce experimental data for aligned ILFs and predict their impact in different working conditions. This work provides potential improvements in transformer reliability and defect detection.

Citation

Bahmani, H. (2024, May). Interlaminar faults in a GOFeSi laminated magnetic core: measurements and simulations. Presented at IEEE International Magnetic Conference (InterMag 2024), Rio de Janeiro, Brazil

• Presentation Conference Type: Conference Paper (published)
• Conference Name: IEEE International Magnetic Conference (InterMag 2024)
• Start Date: May 5, 2024
• End Date: May 10, 2024
• Acceptance Date: Feb 15, 2024
• Online Publication Date: Jul 5, 2024
• Publication Date: Jul 5, 2024
• Deposit Date: Feb 29, 2024
• Publicly Available Date: Jul 11, 2024
• Book Title: 2024 IEEE International Magnetic Conference - Short papers (INTERMAG Short papers)
• ISBN: 9798350362220
• DOI: https://doi.org/10.1109/INTERMAGShortPapers61879.2024.10576939
• Public URL: https://durham-repository.worktribe.com/output/2290900
• Publisher URL: https://doi.org/10.1109/INTERMAGShortPapers61879.2024