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Theoretical Analysis of Planar Spiral Coils between Two Multilayer Media for Electric Vehicle Wireless Charging

Author

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  • Zhichao Luo

    (Clean Energy Automotive Engineering Center, Tongji University, No. 4800, Caoan Road, Shanghai 201804, China
    School of Automotive Studies, Tongji University, No. 4800, Caoan Road, Shanghai 201804, China)

  • Xuezhe Wei

    (Clean Energy Automotive Engineering Center, Tongji University, No. 4800, Caoan Road, Shanghai 201804, China
    School of Automotive Studies, Tongji University, No. 4800, Caoan Road, Shanghai 201804, China)

Abstract

Square and circular coils are two typical topologies for coupling coils and are applied to wireless charging. However, most of the research on coupling coils is based on the finite element model (FEM), which is a time-consuming process for 3-D structure coils. In this paper, on the basis of Fourier–Bessel transformation and Dual Fourier transformation, two theoretical models of square and circular coils between two multilayer media are proposed. With the proposed models, we consider several important parameters such as the size of the coils, thickness, and permeability of each layer. Thus, both the self-inductance and mutual inductance of two planar coils can be calculated without much computational time. Additionally, these theoretical models can help designers figure out the different trends of self-inductance and mutual inductance, which has plenty of benefits for the preliminary pad design. Lastly, a prototype with a size of 600 mm × 600 mm and a 200 mm air gap was built in order to verify the proposed models.

Suggested Citation

  • Zhichao Luo & Xuezhe Wei, 2018. "Theoretical Analysis of Planar Spiral Coils between Two Multilayer Media for Electric Vehicle Wireless Charging," Energies, MDPI, vol. 11(4), pages 1-17, March.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:693-:d:137228
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    Citations

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    Cited by:

    1. Dongwook Kim & Hongseok Kim & Anfeng Huang & Qiusen He & Hanyu Zhang & Seungyoung Ahn & Yuyu Zhu & Jun Fan, 2019. "Analysis and Introduction of Effective Permeability with Additional Air-Gaps on Wireless Power Transfer Coils for Electric Vehicle Based on SAE J2954 Recommended Practice," Energies, MDPI, vol. 12(24), pages 1-11, December.
    2. Kaiwen Chen & Jianfei Pan & Yun Yang & Ka Wai Eric Cheng, 2021. "Optimization of Ferrites Structure by Using a New Core-Less Design Algorithm for Electric Vehicle Wireless Power Transfer," Energies, MDPI, vol. 14(9), pages 1-23, May.

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