Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Novel impedance matching method based on negative resistors for WPT

  • Li, Yang (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tiangong University) ;
  • Liu, Jiaming (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tiangong University) ;
  • Jiang, Shan (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tiangong University) ;
  • Ni, Xin (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tiangong University) ;
  • Ma, Jingnan (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tiangong University) ;
  • Wang, Rui (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tiangong University) ;
  • Sha, Lin (Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tiangong University)
  • Received : 2019.12.29
  • Accepted : 2020.04.10
  • Published : 2020.07.20
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Abstract

In a wireless power transfer (WPT) system via coupled magnetic resonance, the transmission power and efficiency dramatically decrease with increased in the transfer distance and load variations. In the conventional impedance matching method, different resistors are matched by adjusting passive devices such as capacitors and inductors. The corresponding matching range changes with different topological network structures. In particular, there exists a matching forbidden zone. In this paper, a novel impedance matching method based on a negative resistor is proposed to match the impedance in the forbidden zone. First, the conventional impedance matching network is analyzed based on circuit theory. Then, the feasibility of the proposed method is verified. In addition, the receiving power obtained using the conventional matching method is compared with that obtained using the proposed method. It is theoretically verified that the novel method can break the upper power limit related to the conventional method, which realizes a higher receiving power. A prototype was built in the laboratory. Experimental results show the feasibility of the novel method. Moreover, derived simulation results were basically consistent with the experimental values, which also demonstrates the validity of the proposed method.

Keywords

Acknowledgement

This work was supported by the National Key R&D Program of China under Grant [Number 2017YFB1201003-022]; National Natural Science Foundation of China under Grant [Number 51577133], [Number 51877151], [Number 51807138]; and Program for Innovative Research Team in University of Tianjin under Grant [Number TD13-5040].

References

  1. Suh, Y., Chang, K.: A high efficiency dual frequency rectenna for 245 and 58 ghz wireless power transmission. IEEE Trans. Microw. Theory Tech. 50(7), 1784-1789 (2002) https://doi.org/10.1109/TMTT.2002.800430
  2. Ali, M., Dougal, G.: A miniature packaged rectenna for wireless power transmission and data telemetry. In: IEEE international workshop on antenna technology small antennas and novel metamaterials, pp. 225-228 (2006)
  3. Shinohara, N.: Power without wires. IEEE Microw. Mag. 12(7), S64-S73 (2011) https://doi.org/10.1109/MMM.2011.942732
  4. Zhao, Z., Zhang, Y., Chen, K.: New progress of magnetically-coupled resonant wireless power transfer technology. Proc. CSEE 33(3), 1-13 (2013)
  5. Matias, R., Cunha, B., Martins, R.: Modeling inductive coupling for wireless power transfer to integrated circuits. In: 2013 IEEE wireless power transfer (WPT), pp. 198-201, (2013). https://doi.org/10.1109/WPT.2013.6556917
  6. Mou, X., Sun, H.: Wireless power transfer: survey and roadmap. In: Vehicular technology conference (VTC Spring), 2015 IEEE 81st, pp. 1-5. IEEE (2015)
  7. Covic, G.A., Boys, J.T.: Inductive power transfer. Proc. IEEE 101(6), 1276-1289 (2015) https://doi.org/10.1109/JPROC.2013.2244536
  8. Koh, K.E., Beh, T.C., Imura, T., Hori, Y.: Impedance matching and power division using impedance inverter for wireless power transfer via magnetic resonant coupling. IEEE Trans. Ind. Appl. 50(3), 2061-2070 (2014). https://doi.org/10.1109/tia.2013.2287310
  9. Li, Y., Yang, Q., Chen, H., Zhang, X., Yan, Z.: Experimental system design of wireless power transfer based on witricity technology. In: Control, automation and systems engineering (CASE), 2011 international conference on, pp. 1-3. IEEE (2011)
  10. Xu, Q., Gao, Z., Wang, H., He, J., Mao, Z., Sun, M.: Batteries not included: a mat-based wireless power transfer system for implantable medical devices as a moving target. IEEE Microw. Mag. 14(2), 63-72 (2013) https://doi.org/10.1109/MMM.2012.2234640
  11. Jawad, A.M., Nordin, R., Gharghan, S.K., Jawad, H.M., Ismail, M.: Opportunities and challenges for near-field wireless power transfer: a review. Energies 10(7), 28 (2017)
  12. Kurs, A., Karalis, A., Moffatt, R., Joannopoulos, J.D., Fisher, P., Soljacic, M.: Wireless power transfer via strongly coupled magnetic resonances. Science 317(5834), 83-86 (2007) https://doi.org/10.1126/science.1143254
  13. Waters, B.H., Sample, A.P., Bonde, P., Smith, J.R.: Powering a ventricular assist device (vad) with the free-range resonant electrical energy delivery (free-d) system. Proc. IEEE 100(1), 138-149 (2012) https://doi.org/10.1109/JPROC.2011.2165309
  14. Jabbar, H., Song, Y.S., Jeong, T.T.: RF energy harvesting system andcircuits for charging of mobile devices. IEEE Trans. Consum. Electron. 56(1), 247-253 (2010) https://doi.org/10.1109/TCE.2010.5439152
  15. Imura, T., Hori, Y.: Maximizing air gap and efficiency of magnetic resonant coupling for wireless power transfer using equivalent circuit and Neumann formula. IEEE Trans. Ind. Electron. 58(10), 4746-4752 (2011) https://doi.org/10.1109/TIE.2011.2112317
  16. Tak, Y., Park, J., Nam, S.: Mode-based analysis of resonant characteristics for near-field coupled small antennas. IEEE Antennas Wirel. Propag. Lett. 8, 1238-1241 (2009) https://doi.org/10.1109/LAWP.2009.2036133
  17. Yang, L., Qingxin, Y., Zhuo, Y., Chao, Z., Haiyan, C., Xian, Z.: Analysis on effective range of wireless power transfer and its impact factors. Trans. China Electrotech. Soc. 28(1), 106-112 (2013)
  18. Zhou, J., Wu, J., Zhang, X.: Research on small-power wireless power transfer experimental device based on coupled magnetic resonances. Trans. China Electrotech. Soc. 30, 175-180 (2015)
  19. Yanhong, L., Guoqiang, L., Xianjin, S., et al.: The study of the characteristics of broadband magnetic coupling resonant wireless power transfer system. Trans. China Electrotech. Soc. 30(19), 7-11 (2015)
  20. Wencheng, L., Xiaohui, Q., Xingkui, M.: Analysis on maximum efficiency of wireless power transfer via magnetic resonance. Electr. Eng. 4(5), 14-21 (2015)
  21. Moriwaki, Y., Imura, T., Hori, Y.: Basic study on reduction of reflected power using dc/dc converters in wireless power transfer system via magnetic resonant coupling. In: IEEE 33rd international telecommunications energy conference (INTELEC), pp. 1-5 (2011)
  22. Huang, Y., Shinohara, N., Mitani, T.: Impedance matching in wireless power transfer. IEEE Trans. Microw. Theory Tech. 65(2), 582-590 (2017) https://doi.org/10.1109/TMTT.2016.2618921
  23. Bito, J., Jeong, S., Tentzeris, M.M.: A novel heuristic passive and active matching circuit design method for wireless power transfer to moving objects. IEEE Trans. Microw. Theory Techn. 65(4), 1094-1102 (2017) https://doi.org/10.1109/TMTT.2017.2672544
  24. Sussman-Fort, S.E.: Matching network design using non-foster impedances. Int. J. Rf Microw. Comput. Aided Eng. 16, 135-142 (2006) https://doi.org/10.1002/mmce.20118