Study on the Magnetic Field Properties of Coil Array

  • Xiu ZhangEmail author
  • Hao Qi
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 463)


As the degree of dependence on the mobile equipment such as smart phones, smart watches, wearable equipment, is more and more serious, the battery seems to be the restricts for people. In order to overcome the battery technology bottleneck, one method is quick charge, and the other method is wireless charging. However, quick charge often impacts the service life of the physical battery. Thus, the technology of wireless charging becomes the reasonable method. In the wireless power transfer system, the structure of the coil will determine the systems’ performance. In this paper, a novel coil array will be designed and analyzed. The quantitative results will give a global study base for the wireless power transfer system.


Coil array Magnetic field Wireless power transfer 



This research was supported by the National Natural Science Foundation of China (61601329) and Applied Basic Research Program of Tianjin (15JCYBJC52300).


  1. 1.
    Lomas, R.: The man who invented the twentieth century – Nikola Tesla – Forgotten Genius of Electricity, p. 146. Headline Book Publishing, London (1999)Google Scholar
  2. 2.
    Brown, W.C.: The history of wireless power transmission. Sol. Energy 56(1), 3–21 (1996)Google Scholar
  3. 3.
    Soljacic, M., Kurs, A., Karalis, A., et al.: Wireless power transfer via strongly coupled magnetic resonances. Sci. Express 323(1), 34–48 (2007)Google Scholar
  4. 4.
    Zhang, X., Ho, S.L., Fu, W.N.: Quantitative design and analysis of relay resonators in wireless power transfer system. IEEE Trans. Magn. 48(11), 4026–4029 (2012)Google Scholar
  5. 5.
    Zhang, X., Ho, S.L., Fu, W.N.: Quantitative analysis of a wireless power transfer cell with planar spiral structures. IEEE Trans. Magn. 47(10), 3200–3203 (2011)Google Scholar
  6. 6.
    Zhang, X., Ho, S.L., Fu, W.N.: Analysis and optimization of magnetically coupled resonators for wireless power transfer. IEEE Trans. Magn. 48(11), 4511–4513 (2012)Google Scholar
  7. 7.
    Hui, S.Y.R., Zhong, W., Lee, C.K.: A critical review of recent progress in mid-range wireless power transfer. IEEE Trans. Power Electron. 29(9), 4500–4511 (2014)Google Scholar
  8. 8.
    Kurs, A., Moffatt, R., Soljacic, M.: Simultaneous mid-range power transfer to multiple devices. Appl. Phys. Lett. 96(4), 23–30 (2010)Google Scholar
  9. 9.
    Wang, L., Chen, M., Xu, D.H.: The engineering design of contactless emergency power supply in maglev. Proc. CSEE 27(18), 67–70 (2007)Google Scholar
  10. 10.
    Guozheng, M.G.Y.: Research on wireless power transmission for gastrointestinal microsystems based on inductive coupling. J. Biomed. Eng. 25(1), 61–64 (2008)Google Scholar
  11. 11.
    Ludwing, R., Bretchko, P.: RF Circuit Design: Theory and Application. Science Press, Beijing (2002)Google Scholar
  12. 12.
    Fu, W.N., Ho, S.L.: Enhanced nonlinear algorithm for the transient analysis of magnetic field and electric circuit coupled problems. IEEE Trans. Magn. 45(2), 701–706 (2009)Google Scholar
  13. 13.
    Arkkio, A.: Analysis of induction motors based on the numerical solution of the magnetic field and circuit equations. Acta Polytechnica Scandinavica, Electrical Engineering Series 59, Helsinki (1987)Google Scholar
  14. 14.
    Fu, W.N., Zhou, P., Lin, D., Stanton, S., Cendes, Z.J.: Modeling of solid conductors in two-dimensional transient finite-element analysis and its application to electric machines. IEEE Trans. Magn. 40(2), 426–434 (2004)Google Scholar
  15. 15.
    Fu, W.N., Ho, S.L., Li, H.L., Wong, H.C.: An improved nodal method for circuit and multi-slice magnetic field coupled finite element analysis. Elect. Power Comp. Syst. 32(7), 671–689 (2004)Google Scholar
  16. 16.
    Fu, W.N., Ho, S.L., Li, H.L., Wong, H.C.: A multislice coupled finite-element method with uneven slice length division for the simulation study of electric machines. IEEE Trans. Magn. 39(3), 1566–1569 (2003)Google Scholar
  17. 17.
    Ho, S.L., Fu, W.N.: A comprehensive approach to the solution of direct-coupled multi-slice model of skewed induction motors using time stepping eddy-current finite element method. IEEE Trans. Magn. 33(3), 2265–2273 (1997)Google Scholar
  18. 18.
    Ho, S.L., Li, H.L., Fu, W.N.: Inclusion of inter-bar currents in a network-field coupled time stepping finite element model of skewed rotor induction motors. IEEE Trans. Magn. 35(5), 4218–4225 (1999)Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Tianjin Key Laboratory of Wireless Mobile Communication and Wireless Power TransmissionTianjin Normal UniversityTianjinChina

Personalised recommendations