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Accurate Computation of Mutual Inductance of Non Coaxial Pancake Coils
University Campus Bio-Medico of Rome, 00128 Rome, Italy.
Department of Industrial and Information Engineering and Economy, University of L’Aquila, 67100 L’Aquila, Italy.
Department of Industrial and Information Engineering and Economy, University of L’Aquila, 67100 L’Aquila, Italy.
Department of Industrial and Information Engineering and Economy, University of L’Aquila, 67100 L’Aquila, Italy.
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2021 (English)In: Energies, E-ISSN 1996-1073, Vol. 14, no 16, article id 4907Article in journal (Refereed) Published
Abstract [en]

The computation of self and mutual inductances of coils is a classic problem of electrical engineering. The accurate modeling of coupled coils has received renewed interest with the spread of wireless power transfer systems. This problem has been quite well addressed for coplanar or perfectly coaxial coils but it is known that the misalignment conditions easily lead to a sharp decrease in the efficiency. Hence, it is crucial to take misalignment into account in order to properly design the overall wireless power transfer system. This work presents a study to compute analytically the mutual inductance of non-coaxial pancake coils with parallel axes. The accuracy of the proposed methodology is tested by comparison with the numerical results obtained using the tool Fast-Henry. Then, a wireless power transfer system, comprising a full bridge inverter is considered, showing the impact of the misalignment on the coupling between two pancake coils and, thus, between the source and the load.

Place, publisher, year, edition, pages
MDPI, 2021. Vol. 14, no 16, article id 4907
Keywords [en]
pancake coils, mutual inductance, wireless power transfer, planar coils
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electronic systems
Identifiers
URN: urn:nbn:se:ltu:diva-86921DOI: 10.3390/en14164907ISI: 000689194900001Scopus ID: 2-s2.0-85112688557OAI: oai:DiVA.org:ltu-86921DiVA, id: diva2:1589353
Note

Validerad;2021;Nivå 2;2021-09-01 (alebob)

Available from: 2021-08-31 Created: 2021-08-31 Last updated: 2023-08-28Bibliographically approved

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Ekman, Jonas

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