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2022-10-13
Leakage Magnetic Field Calculation and Optimization of Double Inverse Series Coil Structure of Electric Vehicle Wireless Charging Systems
By
Progress In Electromagnetics Research B, Vol. 96, 213-233, 2022
Abstract
In the wireless power transfer (WPT) system of electric vehicles, low electromagnetic field (EMF) shielding will reduce transfer efficiency. How to reduce leakage EMF and obtain a high transfer efficiency is a difficult problem. In this paper, a double inverse series coil (DISC) structure is proposed to reduce the leakage EMF of WPT systems. First, a calculation method of EMF for rectangular coils is proposed, and the leakage EMF distribution characteristics of the coil structure on the target surface are analysed according to the proposed calculation method. Secondly, an optimization method with the optimal leakage EMF effect of the target surface is given. The parameters of each coil that meet the design requirements are obtained based on the proposed optimization method. Finally, according to the obtained coil parameters, a set of WPT system based on DISC structure is developed, and the correctness of the proposed structure and method is verified by simulated and measured results. The results show that with applying the DISC structure, the maximum leakage EMF in WPT system is only 9.56 μT on target surface without additional shielding, and the transfer efficiency is up to 95%.
Citation
Zhongqi Li, Pengsheng Kong, Liquan Ren, Xinbo Xiong, Junjun Li, Wei Wu, and Huadong Liu, "Leakage Magnetic Field Calculation and Optimization of Double Inverse Series Coil Structure of Electric Vehicle Wireless Charging Systems," Progress In Electromagnetics Research B, Vol. 96, 213-233, 2022.
doi:10.2528/PIERB22081707
References

1. Popovic-Gerber, J. and J. A. Oliver, "Power electronics enabling efficient energy usage: Energy savings potential and technological challenges," IEEE Transactions on Power Electronics, Vol. 27, No. 5, 2338-2353, May 2012.
doi:10.1109/TPEL.2011.2171195

2. Khan, M. A. R. and A. Ahmed, "Wireless power transfer: An application to cell phone battery recharging," 2012 15th International Conference on Computer and Information Technology (ICCIT), 305-309, Dec. 2012.
doi:10.1109/ICCITechn.2012.6509769

3. Li, X. and C.-Y. Tsui, "A 13.56MHz wireless power transfer system with reconfigurable resonant regulating rectifier and wireless power control for implantable medical devices," IEEE Journal of Solid-State Circuits, Vol. 50, No. 4, 978-989, Apr. 2015.
doi:10.1109/JSSC.2014.2387832

4. Choi, S. Y. and B. W. Gu, "Advances in wireless power transfer systems for roadway-powered electric vehicles," IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 3, No. 1, 18-36, Mar. 2015.
doi:10.1109/JESTPE.2014.2343674

5. Zhang, Y. and S. Chen, "Design of high-power static wireless power transfer via magnetic induction: An overview," CPSS Transactions on Power Electronics and Applications, Vol. 6, No. 4, 281-297, Dec. 2021.
doi:10.24295/CPSSTPEA.2021.00027

6. Zheng, J. and G. Wei, "New development of electromagnetic compatibility in the future: Cognitive electromagnetic environment adaptation," 2021 13th Global Symposium on Millimeter-Waves & Terahertz (GSMM), 1-3, May 2021.

7. Mohammad, M. and M. S. Haque, "A litz-wire based passive shield design to limit EMF emission from wireless charging system," 2018 IEEE Energy Conversion Congress and Exposition (ECCE), 97-104, Sep. 2018.
doi:10.1109/ECCE.2018.8558334

8. 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

9. Talluri, G. and M. Bindi, "Analysis of power losses due to magnetic shielding for electric vehicle wireless charging," 2021 IEEE 15th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG), 1-6, Jul. 2021.

10. Muramatsu, K. and Y. Gao, "Effect of eddy currents on method for evaluating shielding performance of magnetically shielded rooms using exciting coil," IEEE Transactions on Magnetics, Vol. 50, No. 11, 1-4, Nov. 2014.

11. Mohammad, M. and S. Choi, "Loss minimization design of ferrite core in a DD-coil-based high-power wireless charging system for electrical vehicle application," IEEE Transactions on Transportation Electrification, Vol. 5, No. 4, 957-967, Dec. 2019.
doi:10.1109/TTE.2019.2940878

12. Li, J. and F. Yin, "Transmission efficiency of different shielding structures in wireless power transfer systems for electric vehicles," CSEE Journal of Power and Energy Systems, Vol. 7, No. 6, 1247-1255, Nov. 2021.

13. Choi, S. Y. and B. W. Gu, "Generalized active EMF cancel methods for wireless electric vehicles," IEEE Transactions on Power Electronics, Vol. 29, No. 11, 5770-5783, Nov. 2014.
doi:10.1109/TPEL.2013.2295094

14. 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

15. 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.

16. 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. 04, 44-51, Apr. 2021.

17. Narusue, Y. and Y. Kawahara, "Cancellation mechanism of electromagnetic leakage for wireless power transmission system based on magnetic resonant coupling," 2014 Asia-Pacific Microwave Conference, 677-679, Nov. 2014.

18. Zhou, G., Research on magnetic radiation suppression method of coupling mechanism of electric vehicle wireless power transmission system, Chongqing University, Chongqing, China, 2017.

19. Xu, J., Research on electromagnetic compatibility of n-type magnetic coupling mechanism for dynamic wireless power supply of electric vehicles, Harbin Institute of Technology, Harbin, China, 2017.

20. Idris Elnait, K. E. and L. Huang, "Resonant reactive current shield design in WPT systems for charging EVs," 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 56-59, Oct. 2018.

21. Moon, H. 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

22. Campi, T. and S. Cruciani, "Active coil system for magnetic field reduction in an automotive wireless power transfer system," 2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI), 189-192, Jul. 2019.

23. GB/T 38775-4, , Electric vehicle wireless power transfer --- Part 4: Limits and test methods of electromagnetic environment, China Electricity Council, Beijing, China, 2020.

24. ICNIRP "Guidelines for limiting exposure to time-varying electric and magnetic field (1 Hz to 100 kHz)," Health Physics, Vol. 99, No. 6, 818-836, 2010.
doi:10.1097/HP.0b013e3181f06c86