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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2021-05-18
Global Inductance Computation of a Multilayer Circular Air Coil with a Wire of Rectangular Cross Section: Case of a Uniform Current Distribution
By
Samir Bensaid

    Prof. Samir Bensaid

    Faculty of Sciences and Applied Sciences

    Bouira University

    Algeria

    Homepage

Progress In Electromagnetics Research M, Vol. 102, 149-158, 2021
doi:10.2528/PIERM21031704 | Google Scholar

Abstract
In this paper we present a simple approach to compute quickly and accurately the global inductance of multilayer circular air coils with a wire of rectangular cross section. The case of the uniform current density distribution in the wire cross section is considered. The approach, implemented under GNU Octave, computes the inductance of the multilayer coil in three steps. First, the self-inductance of each coil turn is computed using the Maxwell's formula. Secondly, each wire section is subdivided into several negligible square or rectangular subsections to form a filiform turn, and then the mutual inductances between the turns are computed using Rosa's formula. The last step sums all obtained self-inductances and mutual inductances to deduce the global inductance of the multilayer coil. To verify the efficiency and accuracy of the proposed approach, the obtained equivalent inductance of each turn is compared to the computed one using finite element method implemented in FEMM open source. Furthermore, the global coil inductance is compared to the measured one. The proposed approach shows a good accuracy with a relative error less than 1% for all considered coils.
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Citation
Samir Bensaid, "Global Inductance Computation of a Multilayer Circular Air Coil with a Wire of Rectangular Cross Section: Case of a Uniform Current Distribution," Progress In Electromagnetics Research M, Vol. 102, 149-158, 2021.
doi:10.2528/PIERM21031704
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