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Comparison of impulse processes in spatially shifted ring-like cores made of ferrite and thin sheet steel

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Parent Category: 2026

Category: Content №4 2026

Created on 24 August 2026

Last Updated on 24 August 2026

Published on 30 November -0001

Written by M. A. Kovalenko, V. V. Chumack, D. V. Tsyplenkov, R. P. Dukhno, D. D. Horbatko

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Authors:

M. A. Kovalenko, orcid.org/0000-0002-5602-2001, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine,  e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

V. V. Chumack, orcid.org/0000-0001-8401-7931, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine,  e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

D. V. Tsyplenkov*, orcid.org/0000-0002-0378-5400, Dnipro University of Technology, Dnipro, Ukraine;  Dnipropetrovsk Scientific Research Institute of Forensic Expertise, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

R. P. Dukhno, orcid.org/0009-0008-9506-2234, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine

D. D. Horbatko, orcid.org/0009-0007-6376-2829, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2026, (4): 089 - 097

https://doi.org/10.33271/nvngu/2026-4/089

Abstract:

Purpose. Development of a numerical simulation model of pulse processes of magnetic cores made of ferrite and thin-sheet electrical steel in order to estimate the magnitude of pulse overvoltages.

Methodology. The distribution of the electromagnetic field and eddy currents was calculated using the finite element method. Computer-aided design tools were used to develop geometric models of the computational domain of the studied processes in ring-shaped cores. The theory of transient processes and the laws of electric circuits were used to excite pulse processes in the studied system.

Findings. A three-dimensional numerical ring-field mathematical model of pulse excitation of ring-shaped cores made of different materials of electrical steel of the sensor and inductor was developed, which is used to diagnose interturn short circuits of the filled windings. The model allows determining the time dependences of current, voltage and the nature of the change in magnetic flux during the passage of the pulse excitation front. The distributions of the electromagnetic field, eddy currents and the dynamics of their attenuation were obtained for different values ​​of the magnetic permeability and electrical conductivity of the materials. The obtained results allow us to quantitatively assess the influence of material parameters on pulse processes, to determine the limits of efficiency of using ferrite and cores from different types of electrical steel in high-frequency diagnostic systems, sensors and energy converters.

Originality. The results of the analysis of numerical simulation modeling of the studied system showed that, depending on the type of core material, wave penetration processes with minimal losses are inherent in ferrite material. In thin-sheet steel, eddy currents in each individual sheet have a significant effect on pulse shielding, which significantly affects the output signal.

Practical value. The obtained results can be used to build systems for diagnosing interturn insulation of windings of electrical machines, in particular, as a methodological basis for diagnostic devices based on the use of the proposed approach.

Keywords: impulse processes, insulation diagnostics, wet windings, simulation modeling

References.

1. Kumar, L., Nadarajan, S., Vaiyapuri, V., Gupta, A. K., Soong, B. H., & Nguyen, H. D. (2020). Life estimation of electrical machine using aging model. IECON 2020 – 46^th Annual Conference of the IEEE Industrial Electronics Society, 1034-1039. https://doi.org/10.1109/IECON43393.2020.9254606

2. Eckert, M., Mraz, P., Ballweg, C., & Pihera, J. (2025). Partial discharge behavior and insulation failures detection in electrical devices subjected to impulse voltage excitation. International Journal of Electrical Power & Energy Systems, 111078. https://doi.org/10.1016/j.ijepes.2025.111078

3. European Central Bank (2024). Navigating a fragmenting global trading system: Insights for central banks (Occasional Paper Series No. 365). https://doi.org/10.2866/9822653

4. International Energy Agency (2025). Critical minerals. https://www.iea.org/topics/critical-minerals

5. Psarommatis, F., May, G., Dreyfus, P. A., & Kiritsis, D. (2019). Zero defect manufacturing: State-of-the-art review, shortcomings and future directions in research. International Journal of Production Research, 58(1), 1-17. https://doi.org/10.1080/00207543.2019.1605228

6. Decner, A., Baranski, M., Jarek, T., & Berhausen, S. (2022). Methods of Diagnosing the Insulation of Electric Machines Windings. Energies, 15(22), 8465. https://doi.org/10.3390/en15228465

7. Li, J., Yang, Q., Wang, S., & Li, Y. (2018). Skin effect and eddy current loss in electrical steel sheets under applied excitation fields. 2018 IEEE International Magnetics Conference (INTERMAG), 1. https://doi.org/10.1109/INTMAG.2018.8508090

8. Hofman, A., Bird, J. Z., & Kadel, K. (2023). A Multi-Stage Magnetic Gear. IEEE Transactions on Magnetics, 59(11), 1-5. https://doi.org/10.1109/TMAG.2023.3284421

9. Payne, A. (2024). Skin effect in ferromagnetic materials (Issue 2) and the averaging of magnetic permeability. https://www.researchgate.net/publication/377703071_SKIN_EFFECT_IN_FERROMAGNETIC_MATERIALS_ISSUE_2_AND_THE_AVERAGING_OF_MAGNETIC_PERMEABILITY

10.      Petrun, M., & Steentjes, S. (2020). Iron-loss and magnetization dynamics in non-oriented electrical steel: 1-D excitations up to high frequencies. IEEE Access, 8, 4568-4593. https://doi.org/10.1109/ACCESS.2019.2963482

11.      Ibrahim, M., & Pillay, P. (2012). Core loss prediction in electrical machine laminations considering skin effect and minor hysteresis loops. 2012 IEEE Energy Conversion Congress and Exposition (ECCE), 2681-2687. https://doi.org/10.1109/ECCE.2012.6342536

12.      Bereźnicki, M. (2015). The influence of skin effect on the accuracy of eddy current energy loss calculation in electrical steel sheets. 2015 Selected Problems of Electrical Engineering and Electronics (WZEE), 1-4. https://doi.org/10.1109/WZEE.2015.7394046

13.      Hamzehbahmani, H., Anderson, P., & Preece, S. (2015). Application of an advanced eddy-current loss modelling to magnetic properties of electrical steel laminations in a wide range of measurements. IET Science, Measurement & Technology, 9, 807-816. https://doi.org/10.1049/iet-smt.2014.0276

14.      Rens, J., Vandenbossche, L., & Dorez, O. (2020). Iron loss modelling of electrical traction motors for improved prediction of higher harmonic losses. World Electric Vehicle Journal, 11(1), 24. https://doi.org/10.3390/wevj11010024

15.      Sirizzotti, B., Addae, D., Agamloh, E., von Jouanne, A., & Yokochi, A. (2025). A Review of Stator Insulation State-of-Health Monitoring Methods. Energies, 18(14), 3758. https://doi.org/10.3390/en18143758

16.      Chumak, V. V., Kovalenko, М. А., Trotsenko, Y. O., Stulishenko, A. S., & Tymoshchuk, O. L. (2022). High-frequency methods for detecting insulation defects in mesh winding generators of power plants based on renewable energy sources. Vidnovluvana Energetika, 4(71), 56-63. https://doi.org/10.36296/1819-8058.2022.4(71).56-63

17.      Chumack, V., Kovalenko, M., Tymoshchuk, O., Stulishenko, A., & Ihnatiuk, Y. (2023). Design of a multilink system for calculating high-frequency processes in electric machines with mesh windings. Eastern-European Journal of Enterprise Technologies, 3(8(123)), 54-63. https://doi.org/10.15587/1729-4061.2023.282375

18.      Chumack, V., Tymoshchuk, O., Kovalenko, M., Bazenov, V., Ihna­tiuk, Y., & Stulishenko, A. (2023). Research of high-frequency remagnetization model in laminated magnetic cores of electromechanical and electromagnetic energy converters. Eastern-European Journal of Enterprise Technologies, 4(5(124)), 6-15. https://doi.org/10.15587/1729-4061.2023.286002

19.      Wang, J., Kong, Y., Cai, Y., & Wang, Y. (2024). Effect of the repetition frequency and polarity of square wave voltage on the partial discharge of electric machine insulation for more electrical aircraft. Journal of Physics: Conference Series, 2820(1), 012110. https://doi.org/10.1088/1742-6596/2820/1/012110

20.      Chumack, V., Kovalenko, M., Tymoshchuk, O., & Dukhno, R. (2025). Detecting insulation defects in electrical machines’ multi-turn windings based on analysis of transient electromagnetic processes. Eastern-European Journal of Enterprise Technologies, 5(5(137)), 19-30. https://doi.org/10.15587/1729-4061.2025.342301

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