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Estimation of the Influence of the Coil Resistance on the Power and Efficiency of the WPT System

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  • Jacek Maciej Stankiewicz

    (Faculty of Electrical Engineering, Bialystok University of Technology, Wiejska 45D, 15-351 Bialystok, Poland)

Abstract

This paper presents the results of an analysis of a low-power Wireless Power Transfer (WPT) system. The system consists of periodically distributed planar spiral coils that form the transmitting and receiving planes. An analytical and numerical analysis of the WPT system, over the frequency range from 100 to 1000 kHz, was carried out. A simpler and faster solution is the proposed use of an equivalent circuit represented by a single WPT cell. The influence of coil resistance changes on the power and efficiency of the WPT system was studied. This was obtained by changing the diameter of the wire from which the coils were wound. In addition, the size of the coil, the number of turns, and the distance between the two planes have changed. After a detailed analysis, the results showed that the highest efficiency values were obtained for a wire diameter of 200 μm, which means the lowest coil resistance. However, the lowest efficiency values were obtained for the smallest wire diameter, i.e., 100 µm, which means the highest coil resistance. In this case, the efficiency decreased by more than 40%. Based on the calculation results, it was also shown that it was better to accept the skin effect (efficiency decreased below 7%) than to reduce the wire diameter to eliminate it.

Suggested Citation

  • Jacek Maciej Stankiewicz, 2023. "Estimation of the Influence of the Coil Resistance on the Power and Efficiency of the WPT System," Energies, MDPI, vol. 16(17), pages 1-22, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:17:p:6210-:d:1226065
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    References listed on IDEAS

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    1. Jacek Maciej Stankiewicz, 2023. "Analysis of the Influence of the Skin Effect on the Efficiency and Power of the Receiver in the Periodic WPT System," Energies, MDPI, vol. 16(4), pages 1-22, February.
    2. Saeideh Pahlavan & Mostafa Shooshtari & Shahin Jafarabadi Ashtiani, 2022. "Star-Shaped Coils in the Transmitter Array for Receiver Rotation Tolerance in Free-Moving Wireless Power Transfer Applications," Energies, MDPI, vol. 15(22), pages 1-13, November.
    3. Jacek Maciej Stankiewicz & Agnieszka Choroszucho & Adam Steckiewicz, 2021. "Estimation of the Maximum Efficiency and the Load Power in the Periodic WPT Systems Using Numerical and Circuit Models," Energies, MDPI, vol. 14(4), pages 1-20, February.
    4. Adam Steckiewicz & Agnieszka Choroszucho, 2019. "Optimization-based synthesis of a metamaterial electric cloak using nonhomogeneous composite materials," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 33(14), pages 1933-1941, September.
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    Citations

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    Cited by:

    1. Zbigniew Sołjan & Tomasz Popławski, 2024. "Budeanu’s Distortion Power Components Based on CPC Theory in Three-Phase Four-Wire Systems Supplied by Symmetrical Nonsinusoidal Voltage Waveforms," Energies, MDPI, vol. 17(5), pages 1-27, February.
    2. Agnieszka Choroszucho & Tomasz Szczegielniak & Dariusz Kusiak, 2024. "Application of the FDTD Method to Analyze the Influence of Brick Complexity on Electromagnetic Wave Propagation," Energies, MDPI, vol. 17(20), pages 1-28, October.
    3. Zbigniew Sołjan & Tomasz Popławski & Marek Kurkowski & Maciej Zajkowski, 2024. "Compensation of Budeanu’s Reactive and Complemented Reactive Currents in Extended Budeanu Theory in 3-Phase 4-Wire Systems Powered by Symmetrical Nonsinusoidal Voltage Source," Energies, MDPI, vol. 17(9), pages 1-36, April.
    4. Jacek Maciej Stankiewicz, 2023. "Analysis of the Wireless Power Transfer System Using a Finite Grid of Planar Circular Coils," Energies, MDPI, vol. 16(22), pages 1-15, November.

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