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2019-03-06
DC Transformer Compensation for Efficiency Improvement of Electric Vehicles Wireless Charging Systems
By
Progress In Electromagnetics Research C, Vol. 90, 265-279, 2019
Abstract
A wireless charging system for electric vehicles has two parts which are located inside and outside the vehicle respectively, and energy is transmitted from the outside part to inside part through a loosely coupled transformer. The energy transmission efficiency is directly related to the power conversion efficiency of the entire wireless charging system. This paper aims to improve the transmission efficiency of the DC transformer of the wireless charging system through studying compensation design method of DC transformer. A dual-tap rectifier is applied at the secondary side of the transformer, and a capacitor is connected in series on the primary side. Two capacitors are connected in series on the secondary side. By quantitative analysis on DC transformer efficiency, the relationship among efficiency, switching frequency and compensation parameter is obtained. The compensated DC transformer realizes soft switch and further improves transformer efficiency. Finally, simulation and experiment on the wireless charging system with magnetic induction are conducted to verify the improved transformer design. The simulated and experimental results show that the average compensated DC transformer efficiency has been improved by 1.248%. Thus the designed DC transformer can effectively improve the energy transmission efficiency, and reduce voltage stress of the power device.
Citation
Yao He, Mei Liu, Xintian Liu, Xinxin Zheng, Guojian Zeng, and Jiangfeng Zhang, "DC Transformer Compensation for Efficiency Improvement of Electric Vehicles Wireless Charging Systems," Progress In Electromagnetics Research C, Vol. 90, 265-279, 2019.
doi:10.2528/PIERC18110702
References

1. Bhatti, A. R., "A comprehensive overview of electric vehicle charging using renewable energy," International Journal of Power Electronics & Drive Systems, Vol. 7, No. 1, 114-123, Mar. 2016.

2. Chuen, I. P. S., "Charging support in Battery Electric Vehicle (BEV) development," 2017 7th International Conference on Power Electronics Systems and Applications — Smart Mobility, Power Transfer & Security (PES, 1-4, Hong Kong, 2017.

3. Zheng, Y., "Online distributed MPC-based optimal scheduling for EV charging stations in distribution systems," IEEE Transactions on Industrial Informatics, 1-1, 2018.
doi:10.1109/TII.2010.2089465

4. Zhang, W., "Decentralized electric vehicle charging strategies for reduced load variation and guaranteed charge completion in regional distribution grids," Energies, Vol. 10, No. 2, 147, Jan. 2017.
doi:10.3390/en10020147

5. Liu, F., "Transmitter-side control of both the CC and CV modes for the wireless EV charging system with the weak communication," IEEE Journal of Emerging & Selected Topics in Power Electronics, Vol. 6, No. 2, 955-965, Oct. 2018.
doi:10.1109/JESTPE.2017.2759581

6. Purwadi, A., "Analysis of power converters for high frequency resonant inductive electric vehicle charging system," 2016 3rd Conference on Power Engineering and Renewable Energy, 159-164, 2017.

7. Hata, K., "Proposal of classification and design strategies for wireless power transfer based on specification of transmitter-side and receiver-side voltages and power requirements," IEEJ Transactions on Industry Applications, Vol. 138, No. 4, 330-339, Apr. 2018.
doi:10.1541/ieejias.138.330

8. Fujita, T., "Fundamental discussion on a wireless power transfer system equipped with a common secondary coil during parking and driving," IEEJ Transactions on Industry Applications, Vol. 136, No. 8, 522-531, Aug. 2016.
doi:10.1541/ieejias.136.522

9. Kan, T., "A new integration method for an electric vehicle wireless charging system using LCC compensation topology: Analysis and design," IEEE Transactions on Power Electronics, Vol. 32, No. 2, 1638-1650, Apr. 2017.
doi:10.1109/TPEL.2016.2552060

10. Imura, T., "Wireless power transfer for electric vehicle at the kilohertz band," IEEJ Transactions on Electrical & Electronic Engineering, Vol. 11, No. S2, S91-S99, Apr. 2016.
doi:10.1002/tee.22340

11. Knaisch, K., "Gaussian process surrogate model for the design of circular, planar coils used in inductive power transfer for electric vehicles," IET Power Electronics, Vol. 9, No. 15, 2786-2794, Dec. 2016.
doi:10.1049/iet-pel.2016.0392

12. Aworo, O. J., "Transformer for contactless electric vehicle charging with bidirectional power flow," 2017 IEEE Power & Energy Society General Meeting, 1-5, 2017.

13. Bi, Z., "A review of wireless power transfer for electric vehicles: Prospects to enhance sustainable mobility," Applied Energy, Vol. 179, No. 1, 413-425, Oct. 2016.

14. Evzelman, M., "Burst mode control and switched-capacitor converters losses," 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), 1603-1607, 2016.
doi:10.1109/APEC.2016.7468081

15. Kim, J. W., "APWM adapted half-bridge LLC converter with voltage doubler rectifier for improving light load efficiency," Electronics Letters, Vol. 53, No. 5, 339-341, Mar. 2017.
doi:10.1049/el.2016.4203

16. Liu, C., "Double-LCL resonant compensation network for electric vehicles wireless power transfer: Experimental study and analysis," IET Power Electron, Vol. 9, No. 11, 2262-2270, Sep. 2016.
doi:10.1049/iet-pel.2015.0186

17. Li, W., "Inter-operability considerations of the double-sided LCC compensated wireless charger for electric vehicle and plug-in hybrid electric vehicle applications," 2015 IEEE PELS Workshop on Emerging Technologies: Wireless Power, 1-6, 2015.

18. Kan, T., "A new integration method for an electric vehicle wireless charging system using LCC compensation topology: Analysis and design," IEEE Transactions on Power Electronics, Vol. 32, No. 2, 1638-1650, Feb. 2017.
doi:10.1109/TPEL.2016.2552060

19. Cai, H., "Output power adjustment in inductively coupled power transfer system," Transactions of China Electrotechnical Society, Vol. 29, No. 1, 215-220, Feb. 2014.

20. Huang, C. P. and D. B. Lin, "Signal integrity improvements of bended coupled lines by using miniaturized capacitance and inductance compensation structures," 2016 Asia-Pacific International Symposium on Electromagnetic Compatibility, 22-24, 2016.
doi:10.1109/APEMC.2016.7523019

21. Gao, Y., "Safety and efficiency of the wireless charging of electric vehicles," Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, Vol. 230, No. 9, 1196-1207, Sep. 2016.
doi:10.1177/0954407015603863

22. Guan, Y., "A high-frequency CLCL converter based on leakage inductance and variable width winding planar magnetics," IEEE Transactions on Industrial Electronics, Vol. 65, No. 1, 280-290, Jan. 2018.
doi:10.1109/TIE.2017.2716878

23. Zhang, W. and S. C.Wong, "Analysis and comparison of secondary series-and parallel-compensated inductive power transfer systems operating for optimal efficiency and load-independent voltagetransfer ratio," IEEE Transactions on Power Electronics, Vol. 29, No. 6, 2979-2990, Jun. 2014.
doi:10.1109/TPEL.2013.2273364