Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Multi-DoF wireless power transfer systems based on magnetic dipole coils with multiple receivers

  • Liu, Xiaobo (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology) ;
  • Rong, Cancan (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology) ;
  • Tao, Xiong (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology) ;
  • Lu, Conghui (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology) ;
  • Zeng, Yingyin (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology) ;
  • Liu, Renzhe (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology) ;
  • Liu, Minghai (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology)
  • Received : 2021.05.19
  • Accepted : 2021.12.21
  • Published : 2022.03.20
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Abstract

To improve the degree of freedom (DoF), and the multi-terminal power supply capability of wireless power transfer (WPT) systems, multi-DoF WPT systems for multiple pickups based on magnetic dipole coils are proposed in this paper, which can simultaneously charge multiple receivers regardless of the position degree. First, the equivalent circuit model of the magnetic dipole coils is provided. The critical factors of the proposed multi-load systems are analyzed, such as transfer efficiency, power distribution, and optimal load. Second, a multi-load wireless power transfer system with equal transmitting (TX) and receiving (RX) coil is designed, and the misalignment tolerance of lateral and rotating occasions for the RX coils is discussed. In particular, a multi-load WPT system with miniaturized step-laminated receivers is implemented based on the magnetic dipole coils. Finally, experimental prototypes are established. The obtained results indicate that the output power for the equal dual-load WPT system can reach more than 78 W with a total efficiency of more than 80% under a transfer distance of length of the receiving coil winding. In addition, the output power of the non-equal four-load WPT system can reach 30 W with a total efficiency of 86%. The proposed systems provide practical guidance for the future development of multi-DoF WPT systems for use in portable devices, unmanned intelligent systems, and smart household applications.

Keywords

Acknowledgement

This paper was supported by the Fundamental Research Funds for the Central Universities (HUST: 2021yjsCXCY013).

References

  1. Kurs, A., et al.: Wireless power transfer via strongly coupled magnetic resonances. Science 317(5834), 83-86 (2007) https://doi.org/10.1126/science.1143254
  2. Zhang, Z., Pang, H., Georgiadis, A., Cecati, C.: Wireless power transfer-an overview. IEEE Trans. Ind. Electron. 66(2), 1044-1058 (2019) https://doi.org/10.1109/tie.2018.2835378
  3. Deng, J., Lu, F., Li, W., et al.: ZVS double-side LCC compensated resonant inverter with magnetic integration for electric vehicle wireless charger. In: Applied Power Electronics Conference and Exposition, pp. 1131-1136. IEEE (2015)
  4. Mohammad, M., Kwak, S., Choi, S.: Core design for better misalignment tolerance and higher range of wireless charging for HEV. In: IEEE Applied Power Electronics Conference and Exposition. IEEE (2016)
  5. Hoang, H., Lee, S., Kim, Y., et al.: An adaptive technique to improve wireless power transfer for consumer electronics. IEEE Trans. Consum. Electron. 58(2), 327-332 (2012) https://doi.org/10.1109/TCE.2012.6227430
  6. Ean, K.K., Chuan, B.T., Imura, T., et al.: Impedance matching and power division algorithm considering cross coupling for wireless power transfer via magnetic resonance. In: Intelec 2012. IEEE (2012)
  7. Theilmann, P.T., Asbeck, P.M.: An analytical model for inductively coupled implantable biomedical devices with ferrite rods. IEEE Trans. Biomed. Circuits Syst. 3(1), 43-52 (2009) https://doi.org/10.1109/TBCAS.2008.2004776
  8. Cuong, N., Pavan, K., Minh, N., et al.: Wireless power transfer for autonomous wearable neurotransmitter sensors. Sensors 15(9), 24553-24572 (2015) https://doi.org/10.3390/s150924553
  9. Kim, G., Boo, S., Kim, S., et al.: Control of power distribution for multiple receivers in SIMO wireless power transfer system. J. Electromagn. Eng. Sci. 18(4), 221-230 (2018) https://doi.org/10.26866/jees.2018.18.4.221
  10. Kim, S., Hwang, S., Kim, S., et al.: Investigation of single-input multiple-output wireless power transfer systems based on optimization of receiver loads for maximum efficiencies. J. Electromagn. Eng. Sci. 18(3), 145-153 (2018) https://doi.org/10.26866/jees.2018.18.3.145
  11. Yang, G., Moghadam, M., Zhang, R.: Magnetic MIMO signal processing and optimization for wireless power transfer. IEEE Trans. Signal Process. 65(11), 2860-2874 (2017) https://doi.org/10.1109/TSP.2017.2673816
  12. Qi, Z., Mei, S., Yao, S., et al.: Field orientation based on current amplitude and phase angle control for wireless power transfer. IEEE Trans. Ind. Electron. PP(99), 1 (2017)
  13. Zhang, C., Lin, D., Hui, S.Y.: Basic control principles of omni-directional wireless power transfer. IEEE Trans. Power Electron. 31(7), 5215-5227 (2016) https://doi.org/10.1109/TPEL.2015.2479246
  14. Kamotesov, S., Lombard, P., Semet, V., et al.: Omni-directional inductive wireless charging of a 3D receiver cube inside a box. In: 2018 IEEE Wireless Power Transfer Conference (WPTC), Montreal, Canada, 2018, pp. 1-4
  15. Feng, J., Li, Q., Lee, F.C.: Coil and circuit design of omnidirectional wireless power transfer system for portable device application. In: 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, USA, 2018, pp. 914-920
  16. Tan, L., Zhong, R., Tang, Z., et al.: Power stability optimization design of three-dimensional wireless power transmission system in multi-load application scenarios. IEEE Access PP(99), 1 (2020)
  17. Budhia, M., Covic, G.A., Boys, J.T.: Design and optimization of circular magnetic structures for lumped inductive power transfer systems. IEEE Trans. Power Electron. 26(11), 3096-3108 (2011) https://doi.org/10.1109/TPEL.2011.2143730
  18. Nagendra, G.R., Covic, G.A., Boys, J.T.: Determining the physical size of inductive couplers for IPT EV systems. Emerg. Sel. Top. Power Electron. IEEE J. 2(3), 571-583 (2014) https://doi.org/10.1109/JESTPE.2014.2302295
  19. Wang, M., Jing, F., Shi, Y., et al.: Demagnetization weakening and magnetic field concentration with ferrite core characterization for efcient wireless power transfer. IEEE Trans. Ind. Electron. PP, 1 (2018) https://doi.org/10.1109/TIE.2018.2840485
  20. Xiong, M., Wei, X., Huang, Y., et al.: Research on novel flexible high-saturation nanocrystalline cores for wireless charging systems of electric vehicles. IEEE Trans. Ind. Electron. PP(99), 1 (2020)
  21. Choi, B.H., Thai, V.X., Lee, E.S., et al.: Dipole-coil-based wide-range inductive power transfer systems for wireless sensors. IEEE Trans. Ind. Electron. 63(5), 3158-3167 (2016) https://doi.org/10.1109/TIE.2016.2517061
  22. Park, C., Lee, S., Cho, G.H., Rim, C.T.: Innovative 5-m-off-distance inductive power transfer systems with optimally shaped dipole coils. IEEE Trans. Power Electron. 30(2), 817-827 (2014) https://doi.org/10.1109/TPEL.2014.2310232
  23. Choi, B.H., Lee, E.S., Sohn, Y.H., et al.: Six degrees of freedom mobile inductive power transfer by crossed dipole Tx and Rx coils. IEEE Trans. Power Electron. 31(4), 1-1 (2015) https://doi.org/10.1109/TPEL.2015.2510224
  24. Kar, D.P., Biswal, S., Sahoo, P.K., et al.: Selection of maximum power transfer region for resonant inductively coupled wireless charging system. AEU Int. J. Electron. Commun. 84, 84-92 (2017)
  25. Zhang Y. Key technologies of magnetically-coupled resonant wireless power transfer. Ph.D. dissertation, Dept. Elect. Eng., Tsinghua Univ. Beijing, Beijing, China (2018)
  26. Fu, M., Zhang, T., Ma, C., et al.: Efficiency and optimal loads analysis for multiple-receiver wireless power transfer systems. IEEE Trans. Microw. Theory Tech. 63(3), 801-812 (2015) https://doi.org/10.1109/TMTT.2015.2398422