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Influence of Construction of High Frequency Air Transformers for SMPS on Parameters of Their Compact Thermal Model

Author

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  • Krzysztof Górecki

    (Department of Power Electronics, Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland)

  • Kalina Detka

    (Department of Power Electronics, Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland)

Abstract

High frequency air transformers for switched-mode power supply (SMPS) are important components of wireless power transfer systems (WPT). This paper describes a compact thermal model of such transformers. This model takes into account self-heating in all components of such a transformer and mutual thermal couplings between these components. Methods of measurement of self- and transfer transient thermal impedances characterizing properties of the considered devices are proposed. The form of the elaborated model is described together with a parameters estimation method. Some results of measurements and calculations illustrating an influence of selected factors on waveforms of self- and transfer transient thermal impedances obtained for different constructions of the tested devices are shown and discussed. Two kinds of constructions of the air transformers are considered—with ferrite plates and without them. Different dimensions of the coils and different distances between them are considered. A good agreement is obtained between the results of measurements and simulations for all the considered constructions of the tested transformers operating in different conditions.

Suggested Citation

  • Krzysztof Górecki & Kalina Detka, 2025. "Influence of Construction of High Frequency Air Transformers for SMPS on Parameters of Their Compact Thermal Model," Energies, MDPI, vol. 18(6), pages 1-18, March.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:6:p:1313-:d:1607301
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    References listed on IDEAS

    as
    1. Krzysztof Górecki & Kalina Detka & Krzysztof Górski, 2020. "Compact Thermal Model of the Pulse Transformer Taking into Account Nonlinearity of Heat Transfer," Energies, MDPI, vol. 13(11), pages 1-17, June.
    2. Kalina Detka & Krzysztof Górecki & Przemysław Ptak, 2023. "Model of an Air Transformer for Analyses of Wireless Power Transfer Systems," Energies, MDPI, vol. 16(3), pages 1-19, January.
    3. Mohamed Bensetti & Karim Kadem & Yao Pei & Yann Le Bihan & Eric Labouré & Lionel Pichon, 2023. "Parametric Optimization of Ferrite Structure Used for Dynamic Wireless Power Transfer for 3 kW Electric Vehicle," Energies, MDPI, vol. 16(14), pages 1-14, July.
    4. Leszek Piechowski & Adam Muc & Jan Iwaszkiewicz, 2021. "The Precise Temperature Measurement System with Compensation of Measuring Cable Influence," Energies, MDPI, vol. 14(24), pages 1-17, December.
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