Modeling of Mutual Inductance Between Two Misalignment Planar Coils in Wireless Power Transfer

Mutual inductance is an important parameter for the design and optimization of the wireless power transfer (WPT) system. In this letter, a compact analytical model for mutual inductance of two coupled planar coil is proposed. The model is derived from Neumann's integral of constant current-carr...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 30; no. 8; pp. 814 - 817
Main Authors Qian, Libo, Chen, Mengfei, Cui, Kexue, Shi, Ge, Wang, Jian, Xia, Yinshui
Format Journal Article
LanguageEnglish
Published IEEE 01.08.2020
Subjects
Analytical model
Analytical models
coil misalignment
Coils
Computational modeling
Inductance
mutual inductance
Solid modeling
Wireless communication
wireless power link
Wireless power transfer
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Summary:Mutual inductance is an important parameter for the design and optimization of the wireless power transfer (WPT) system. In this letter, a compact analytical model for mutual inductance of two coupled planar coil is proposed. The model is derived from Neumann's integral of constant current-carrying filament with a Taylor expansion approach. It can predict mutual inductance at various lateral and angular misalignments. The analytical results show a good agreement with the 3-D electromagnetic simulation results, and the maximum error for the mutual inductance remains less than 15.1%. An experimental setup has been built, and the results reveal the proposed model can predict the mutual coupling rapidly and effectively.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2020.3006211