Vol. 137
Latest Volume
All Volumes
PIERC 143 [2024] PIERC 142 [2024] PIERC 141 [2024] PIERC 140 [2024] PIERC 139 [2024] PIERC 138 [2023] PIERC 137 [2023] PIERC 136 [2023] PIERC 135 [2023] PIERC 134 [2023] PIERC 133 [2023] PIERC 132 [2023] PIERC 131 [2023] PIERC 130 [2023] PIERC 129 [2023] PIERC 128 [2023] PIERC 127 [2022] PIERC 126 [2022] PIERC 125 [2022] PIERC 124 [2022] PIERC 123 [2022] PIERC 122 [2022] PIERC 121 [2022] PIERC 120 [2022] PIERC 119 [2022] PIERC 118 [2022] PIERC 117 [2021] PIERC 116 [2021] PIERC 115 [2021] PIERC 114 [2021] PIERC 113 [2021] PIERC 112 [2021] PIERC 111 [2021] PIERC 110 [2021] PIERC 109 [2021] PIERC 108 [2021] PIERC 107 [2021] PIERC 106 [2020] PIERC 105 [2020] PIERC 104 [2020] PIERC 103 [2020] PIERC 102 [2020] PIERC 101 [2020] PIERC 100 [2020] PIERC 99 [2020] PIERC 98 [2020] PIERC 97 [2019] PIERC 96 [2019] PIERC 95 [2019] PIERC 94 [2019] PIERC 93 [2019] PIERC 92 [2019] PIERC 91 [2019] PIERC 90 [2019] PIERC 89 [2019] PIERC 88 [2018] PIERC 87 [2018] PIERC 86 [2018] PIERC 85 [2018] PIERC 84 [2018] PIERC 83 [2018] PIERC 82 [2018] PIERC 81 [2018] PIERC 80 [2018] PIERC 79 [2017] PIERC 78 [2017] PIERC 77 [2017] PIERC 76 [2017] PIERC 75 [2017] PIERC 74 [2017] PIERC 73 [2017] PIERC 72 [2017] PIERC 71 [2017] PIERC 70 [2016] PIERC 69 [2016] PIERC 68 [2016] PIERC 67 [2016] PIERC 66 [2016] PIERC 65 [2016] PIERC 64 [2016] PIERC 63 [2016] PIERC 62 [2016] PIERC 61 [2016] PIERC 60 [2015] PIERC 59 [2015] PIERC 58 [2015] PIERC 57 [2015] PIERC 56 [2015] PIERC 55 [2014] PIERC 54 [2014] PIERC 53 [2014] PIERC 52 [2014] PIERC 51 [2014] PIERC 50 [2014] PIERC 49 [2014] PIERC 48 [2014] PIERC 47 [2014] PIERC 46 [2014] PIERC 45 [2013] PIERC 44 [2013] PIERC 43 [2013] PIERC 42 [2013] PIERC 41 [2013] PIERC 40 [2013] PIERC 39 [2013] PIERC 38 [2013] PIERC 37 [2013] PIERC 36 [2013] PIERC 35 [2013] PIERC 34 [2013] PIERC 33 [2012] PIERC 32 [2012] PIERC 31 [2012] PIERC 30 [2012] PIERC 29 [2012] PIERC 28 [2012] PIERC 27 [2012] PIERC 26 [2012] PIERC 25 [2012] PIERC 24 [2011] PIERC 23 [2011] PIERC 22 [2011] PIERC 21 [2011] PIERC 20 [2011] PIERC 19 [2011] PIERC 18 [2011] PIERC 17 [2010] PIERC 16 [2010] PIERC 15 [2010] PIERC 14 [2010] PIERC 13 [2010] PIERC 12 [2010] PIERC 11 [2009] PIERC 10 [2009] PIERC 9 [2009] PIERC 8 [2009] PIERC 7 [2009] PIERC 6 [2009] PIERC 5 [2008] PIERC 4 [2008] PIERC 3 [2008] PIERC 2 [2008] PIERC 1 [2008]
2023-08-29
Study of a Double-Layer Passive Magnetic Shielding System for Electric Vehicle WPT
By
Progress In Electromagnetics Research C, Vol. 137, 65-79, 2023
Abstract
In the wireless power transfer(WPT) system of electric vehicles, the magnetic shielding performance often comes at the expense of the transmission efficiency. How to maintain high transmission efficiency while reducing magnetic leakage is a challenge. For this reason, this paper proposes a double-layer passive magnetic shielding coil structure for an electric vehicle WPT system. First, a leakage optimization method is given, and the optimal parameters for each shielding coil are obtained with this method. Second, according to the obtained coil parameters, a WPT system with magnetic shielding for electric vehicles is developed. The correctness of the proposed structure and method is verified by simulation and experiment. Finally, when the system output is 4 kW, the proposed shielding structure not only reduces the maximum leakage field in the target area by 54.64%, but also has a transmission efficiency of 94.8%.
Citation
Xueyi Zhang, Liquan Ren, Pengsheng Kong, Xinbo Xiong, and Zhongqi Li, "Study of a Double-Layer Passive Magnetic Shielding System for Electric Vehicle WPT," Progress In Electromagnetics Research C, Vol. 137, 65-79, 2023.
doi:10.2528/PIERC23042103
References

1. Lu, J. and J. Zhao, "Research on electric vehicle dynamic wireless charging system with two coils in series," Journal of Power Supply, 1-15, Jul. 2022.

2. Rituraj, G. and P. Kumar, "A new magnetic structure of unipolar rectangular coils in WPT systems to minimize the ferrite volume while maintaining maximum coupling," IEEE Transactions on Circuits and Systems, Vol. 68, No. 6, 2072-2076, Jun. 2021.

3. Li, J. and J. Li, "Design and optimization of asymmetric and reverse series coil structure for obtaining quasi-constant mutual inductance in dynamic wireless charging system for electric vehicles," IEEE Transactions on Vehicular Technology, Vol. 71, No. 3, 2560-2572, Mar. 2021.
doi:10.1109/TVT.2021.3138072

4. Zhang, J. and Q. Yang, "Optimization and characteristic analysis of wireless power driven vehicle featuring magnetic coupled resonance," Transaction of China Electrotechnical Society, Vol. 30, No. S1, 286-291, Sep. 2015.

5. Chen, J. and Z. Liu, "Research on multi coil reactive shielding of resonant wireless energy supply cardiac pacemaker," Transaction of China Electrotechnical Society, Vol. 37, No. 11, 2673-2685, Jun. 2022.

6. Cui, S. and B. Song, "A narrow-width three phase magnetic coupling mechanism with constant output power for electric vehicles dynamic wireless charging," 2018 IEEE PELS Workshop on Emerging Technologies-Wireless Power Transfer (WoW), 1-6, Jun. 2018.

7. Wang, J. and X. Wang, "Advances of wireless charging technology in electric vehicle," Journal of Power Supply, No. 3, 27-32, May 2014.

8. Sim, B. and S. Jeong, "A near field analytical model for EMI reduction and efficiency enhancement using an nth harmonic frequency shielding coil in a loosely coupled automotive WPT system," IEEE Transactions on Electromagnetic Compatibility, Vol. 63, No. 3, 935-946, Jun. 2021.
doi:10.1109/TEMC.2020.3039412

9. Campi, T. and S. Cruciani, "Magnetic field mitigation by multicoil active shielding in electric vehicles equipped with wireless power charging system," IEEE Transactions on Electromagnetic Compatibility, Vol. 62, No. 4, 1398-1405, Aug. 2020.
doi:10.1109/TEMC.2020.2988463

10. Campi, T. and S. Cruciani, "Numerical analysis applying the AMSL method to predict the magnetic field in an ev with a WPT system," 2018 IEEE Wireless Power Transfer Conference (WPTC), Montreal, QC, Canada, Feb. 2019.

11. Li, J. and X. Zhang, "Study on modelling and electromagnetic safety evaluation of the wireless power transfer system for electric vehicles," Journal of Power Supply, Vol. 1, No. 14, Aug. 2021.

12. Park, J. and D. Kim, "A resonant reactive shielding for planar wireless power transfer system in smartphone application," IEEE Transactions on Electromagnetic Compatibility, Vol. 59, No. 2, 695-703, Apr. 2017.
doi:10.1109/TEMC.2016.2636863

13. Zhu, J. and D. Chen, "Study on the magnetic field and shielding technique for an electric vehicle oriented wireless charging system," Transaction of China Electrotechnical Society, Vol. 30, No. S1, 143-147, Sep. 2015.

14. Lee, J. and Y. Lim, "Effective combination of soft magnetic materials for magnetic shielding," IEEE Transactions on Magnetics, Vol. 48, No. 11, 4550-4553, Nov. 2012.
doi:10.1109/TMAG.2012.2196682

15. Dai, Z. and X. Zhang, "Magnetic coupling mechanism with omnidirectional magnetic shielding for wireless power transfer," IEEE Transactions on Electromagnetic Compatibility, 1-10, Apr. 2023.
doi:10.1109/TEMC.2023.3266089

16. Cruciani, S. and T. Campi, "Active shielding design for a dynamic wireless power transfer system," 2020 International Symposium on Electromagnetic Compatibility-EMC EUROPE, 1-4, Sep. 2020.

17. Meng, J. and Y. Zhang, "Research of active magnetic shielding for wireless power transfer system of electric vehicles," Advanced Technology of Electrical Engineering and Energy, Vol. 40, No. 4, 44-51, Apr. 2021.

18. Zhou, G., Study on the coupling mechanism magnetic radiation suppression method for wireless power transfer system of electric vehicle, Chongqing University, Chongqing, China, 2017.

19. Xu, G., Research on electromagnetic compatibility of N-type magnetic coupler for dynamic wireless power supply of electric vehicle, Harbin Institute of Technology, Harbin, China, 2017.

20. Xu, J. and Y. Xu, "IPT resonant reactive shielding systems with the characteristics of optimal magnetic shielding effect on the target surface," Proceedings of the CSEE, Vol. 39, No. 18, 5490-5498+5597, Sep. 2019.

21. Lee, J. and D. Kim, "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, 4356-4367, Jun. 2019.
doi:10.1109/TIE.2018.2851988

22. Kim, J. and H. Park, "Design and analysis of a resonant reactive shield for a wireless power electric vehicle," IEEE Transactions on Microwave Theory and Techniques, Vol. 62, No. 4, 1057-1066, Apr. 2014.
doi:10.1109/TMTT.2014.2305404

23. Moon, J. and S. Kim, "Design of a resonant reactive shield with double coils and a phase shifter for wireless charging of electric vehicles," IEEE Transactions on Magnetics, Vol. 51, No. 3, 1-4, Mar. 2015.
doi:10.1109/TMAG.2014.2360701

24. Li, J. and L. Li, "Mutual inductance calculation of arbitrarily positioned rectangular coils with magnetic shielding in wireless power transfer systems," Transaction of China Electrotechnical Society, Vol. 37, No. 17, 4294-4305, Feb. 2022.

25. Kim, J. and S. Kong, "Coil design and shielding methods for a magnetic resonant wireless power transfer system," Proceedings of the IEEE, Vol. 101, No. 6, 1332-1342, Mar. 2013.
doi:10.1109/JPROC.2013.2247551

26. Mi, M. and Q. Yang, "Multi-objective active shielding coil design for wireless electric vehicle charging system," IEEE Transactions on Magnetics, Vol. 58, No. 2, 8700505, Feb. 2022.
doi:10.1109/TMAG.2021.3094721

27. L, R. and Q. Yang, "Efficient shielding design and optimization of wireless power transfer system with proximity coupling," Automation of Electric Power Systems, Vol. 43, No. 21, 163-169, Oct. 2019.