Inter-Laminar Fault Analysis of Magnetic Cores with Grain-Oriented Electrical Steels under Harmonic Distortion Magnetisations

Hamzehbahmani, Hamed

Abstract

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 paper presents an in depth analysis on energy loss and energy loss components of stacks of Grain-Oriented (GO) 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 (SHL and DHL). 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.

Citation

Hamzehbahmani, H. (2020). Inter-Laminar Fault Analysis of Magnetic Cores with Grain-Oriented Electrical Steels under Harmonic Distortion Magnetisations. IET Science, Measurements and Technology, 14(1), 26-31. https://doi.org/10.1049/iet-smt.2019.0191

• Journal Article Type: Article
• Acceptance Date: Sep 20, 2019
• Online Publication Date: Sep 25, 2019
• Publication Date: Jan 31, 2020
• Deposit Date: Sep 27, 2019
• Publicly Available Date: Sep 27, 2019
• Journal: IET Science, Measurements and Technology
• Electronic ISSN: 1751-8830
• Publisher: Institution of Engineering and Technology (IET)
• Peer Reviewed: Peer Reviewed
• Volume: 14
• Issue: 1
• Pages: 26-31
• DOI: https://doi.org/10.1049/iet-smt.2019.0191