Browse > Article
http://dx.doi.org/10.12673/jant.2022.26.3.160

Characteristic Analysis of Efficiency and Impedance With WPT Transmitter and Receiver Coil Distance  

Park, Dae Kil (Department of Electronics Engineering, Incheon National University)
Kim, Young Hyun (Department of Electronics Engineering, Incheon National University)
Koo, Kyung Heon (Department of Electronics Engineering, Incheon National University)
Publication Information
Journal of Advanced Navigation Technology / v.26, no.3, 2022 , pp. 160-165 More about this Journal
Abstract
In this paper, we have proposed a magnetic resonant 6.78MHz WPT(wireless power transfer) technique which can be applied to a fixed transmitter and a receiver of varying relative distance and coil alignment, Power transmission characteristics are studied with the relative distance and misalignment ration of coil area between the transmitting and receiving coils. The coils are designed with the size of 60×80mm2 by direct feeding method, and the characteristics are derived with the maximum relative distance of 50mm and horizontal area misalignment state of 0-40mm misalignment of coil center axis in the XY plane. The power transmission characteristics are compared between the 3D EM simulation and the measured data, and the power transmission shows larger than -3dB performance with the vertical distance of up to 30mm and 50% area misalignmment ratio. This work showsthe transmission characteristics according to relative distance and misalignment state between the cols and that direct feeding has advantage for the short relative distance and small misalignment ratio.
Keywords
Characteristic analysis; Distance change; Electromagnetic field; Impedance; Wireless power transfer;
Citations & Related Records
연도 인용수 순위
  • Reference
1 A. Kurs, A. Karalis, R. Moffatt, and J. D. Joanopoulos, P. Fisher, and M. Soljacic, "Wireless power transfer via strongly coupled magnetic resonances," Science, Vol. 317, pp. 83-86, 2007.   DOI
2 X. Y. Zhang, C. Xue and J. Lin, "Distance-insensitive wireless power transfer using mixed electric and magnetic coupling for frequency splitting suppression," IEEE Trans Microwave Theory Technology, Vol. 65, No. 11, pp.4307-4316, 2017.   DOI
3 W. Zhou, S. Sandeep, P. Wu, P. Yang, W. Yu and S. Y. Huang, "A wideband strongly coupled magnetic resonance wireless power transfer system and its circuit analysis," IEEE Microwave Wireless Component Letter, Vol. 28, No. 12, pp. 1152-1154, 2018.   DOI
4 F. Liu, Y. Yang, D. Jiang, X. Ruan and X. Chen, "Modeling and optimization of magnetically coupled resonant wireless power transfer system with varying spatial scales," IEEE Transaction Power Electronics, Vol. 32, No.4, pp. 3240-3250, 2017.   DOI
5 Y. H. Sohn, B. H. Choi, E. S. Lee, G. C. Lim, G. Cho and C. T. Rim, "General unified analyses of two-capacitor inductive power transfer systems: equivalence of current-source SS and SP compensations," IEEE Transaction Power Electronics, Vol. 30, No. 11, pp. 6030-6045, 2015.   DOI
6 Fu. M, Zhang. T, Ma. C and Zhu. X, "Efficiency and optimal loads analysis for multiple-receiver wireless power transfer systems," IEEE Transactions on Microwave Theory and Techniques, Vol. 63.3, pp. 801-812, 2015.   DOI
7 S. Aldhaher, P. D. Mitcheson, J. M. Arteaga, G. Kkelis and D. C. Yates, "Light-weight wireless power transfer for mid-air charging of drones," 2017 11th European Conference on Antennas and Propagation (EUCAP), Paris, pp. 336-340, 2017.
8 Y. Park, J. Kim and K. H. Kim, Wireless Power TransferPrinciples and Engineering Explorations, 1st ed. Croatia:InTech, 2012.
9 Thuan Nguyen, V. Hyon Kang, S. and Won Jung, C, "Efficiency optimization of WPT system with a planar receiver for mobile applications," Microwave Optical Technology Letter, Vol. 58, pp.1817-1819, 2016.   DOI
10 Hoon Hee L, Hyon Kang, S. and Won Jung, C. "MR-WPT with reconfigurable resonator and ground for laptop application," IEEE Microwave Wireless Component Letter, Vol. 28, No. 3, pp. 269-271, 2018..   DOI
11 P. Vizmuller, RF Design Guide, London:Artech House, pp. 218-219, 1995.
12 I. Awai, and T, Ishizaki, "Transferred power and efficiency of a coupled-resonator WPT system," in Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS), IEEE MTT-S International, Japan, pp. 105-108, 2012.
13 I. Awai. "Design theory of wireless power transfer system based on magnetically coupled resonators," in 2010 IEEE International Conference on Wireless Information Technology and Systems. Honolulu, HI, pp. 1-4, 2010.
14 C. W. YANG, and C. L. YANG, "Analysis of inductive coupling coils for extending distances of efficient wireless power transmission," in Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), 2013 IEEE MTT-S International. IEEE, Singapore, pp. 1-3, 2013.