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Self-Inductance Calculation of the Archimedean Spiral Coil

Author

Listed:
  • Iftikhar Hussain

    (Department of Electrical Engineering, Yeungnam University, Gyeongsan 38541, Korea)

  • Dong-Kyun Woo

    (Department of Electrical Engineering, Yeungnam University, Gyeongsan 38541, Korea)

Abstract

In this paper, a new method to calculate the self-inductance of the Archimedean spiral coil is presented. The proposed method is derived by solving Neumann’s integral formula, and the numerical tool is used to calculate the inductance value. The calculation results are verified with several conventional formulas derived from the Wheeler formula or its modified form and 3D finite element analyses. The comparison with simulation results shows that the conventional formula has an error of above 40% compared to the proposed method, which has below 7% when the wire diameter is reduced. To further check the validity, different sizes of the spiral coil are fabricated by changing the geometrical parameters such as the number of turns, turn spacing, inner radius, outer radius, and wire diameter. Litz wire is chosen for making the spiral coil, and bobbins are made using a 3D printer. Finally, the calculation results are compared with the experimental result. The error between them is less than 2%. The comparison with the conventional formulas, simulation, and measurement results shows the accuracy of the proposed method. This method can be used to calculate the self-inductance of wireless power coils, inductors and antenna design.

Suggested Citation

  • Iftikhar Hussain & Dong-Kyun Woo, 2021. "Self-Inductance Calculation of the Archimedean Spiral Coil," Energies, MDPI, vol. 15(1), pages 1-13, December.
    • Handle: RePEc:gam:jeners:v:15:y:2021:i:1:p:253-:d:714978
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    References listed on IDEAS

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    1. Thuc Phi Duong & Jong-Wook Lee, 2015. "A Dynamically Adaptable Impedance-Matching System for Midrange Wireless Power Transfer with Misalignment," Energies, MDPI, vol. 8(8), pages 1-25, July.
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    Cited by:

    1. Vladimir Kindl & Lukáš Sobotka & Michal Frivaldsky & Martin Skalicky, 2022. "Analytical Method for Designing Three-Phase Air-Gapped Compensation Choke," Energies, MDPI, vol. 15(19), pages 1-17, October.

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