[1]

S. Lee, D. H. Kim, Y. Cho et al., “Low leakage electromagnetic field level and high efficiency using a novel hybrid loop-array design for wireless high power transfer system,” IEEE Transactions on Industrial Electronics, vol. 66, no. 6, pp. 4356–4367, 2019.

doi: 10.1109/TIE.2018.2851988
[2]

M. Y. Li, X. Y. Chen, H. Y. Gou et al., “Conceptual design and characteristic analysis of a sliding-type superconducting wireless power transfer system using ReBCO primary at 50Hz,” IEEE Transactions on Applied Superconductivity, vol. 29, no. 2, Article ID 5501304, 2019.

doi: 10.1109/tasc.2019.2894444
[3]

Z. H. Ye, Y. Sun, X. Dai, and C. Tang, “Energy efficiency analysis of U-coil wireless power transfer system,” IEEE Transactions on Power Electonics, vol. 31, no. 7, pp. 4809–4817, 2019.
[4]

Z. Yan, Y. Li, C. Zhang, and Q. Yang, “Influence factors analysis and improvement method on efficiency of wireless power transfer via coupled magnetic resonance,” IEEE Transactions on Magnetics, vol. 50, no. 4, Article ID 4004204, 2014.

doi: 10.1109/tmag.2013.2291861
[5]

J. Liu, Q. Deng, D. Czarkowski, M. K. Kazimierczuk, H. Zhou, and W. Hu, “Frequency optimization for inductive power transfer based on AC resistance evaluation in litz-wire coil,” IEEE Transactions on Power Electronics, vol. 34, no. 3, pp. 2355–2363, 2019.

doi: 10.1109/tpel.2018.2839626
[6]

Z. Cheng, Y. Lei, K. Song, and C. Zhu, “Design and loss analysis of loosely coupled transformer for an underwater high-power inductive power transfer system,” IEEE Transactions on Magnetics, vol. 51, no. 7, Article ID 8401110, 2017.
[7]

X. Liu, C. Liu, W. Han, and P. W. T. Pong, “Design and implementation of a multi-purpose TMR sensor matrix for wireless electric vehicle charging,” IEEE Sensors Journal, vol. 19, no. 5, pp. 1683–1692, 2019.

doi: 10.1109/jsen.2018.2883708
[8]

T. Gonda, S. Mototani, K. Doki, and A. Torii, “Effect of air space in waterproof sealed case containing transmitter and receiver of wireless power transfer in sea water,” Electrical Engineering in Japan, vol. 206, pp. 24–31, 2019.

doi: 10.1002/eej.23197
[9]

J. Muhlethaler, J. Biela, J. W. Kolar, and A. Ecklebe, “Core losses under the DC bias condition basedon steinmetz parameters,” IEEE Transactions on Power Electronics, vol. 27, no. 2, pp. 953–963, 2012.

doi: 10.1109/tpel.2011.2160971
[10]

S. C. Tang and N. J. McDannold, “Power Loss analysis and comparison of segmented and unsegmented energy coupling coils for wireless energy transfer,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 3, no. 1, pp. 215–225, 2015.

doi: 10.1109/jestpe.2014.2330951
[11]

K. E. I. Elnail, X. L. Huang, X. Chen, L. L. Tan, and H. Z. Xu, “Core Structure and electromagnetic field evaluation in WPT systems for charging electric vehicles,” Energies, vol. 11, no. 7, p. 1734, 2018.

doi: 10.3390/en11071734
[12]

X. Zhang, S. L. Ho, and W. N. Fu, “Quantitative analysis of a wireless power transfer cell with planar spiral structures,” IEEE Transactions on Magnetics, vol. 47, no. 10, pp. 3200–3203, 2011.

doi: 10.1109/tmag.2011.2147768
[13]

Y. Tang, F. Zhu, and H. Ma, “Efficiency optimization with a novel magnetic-circuit model for inductive power transfer in EVs,” Journal of Power Electronics, vol. 18, no. 1, pp. 309–322, 2018.