Hostname: page-component-cd4964975-8tfrx Total loading time: 0 Render date: 2023-03-31T08:56:37.179Z Has data issue: true Feature Flags: { "useRatesEcommerce": false } hasContentIssue true

Methodology for the design of multi-source transmitters dedicated to perpendicular dynamic wireless power transfer: theoretical study

Published online by Cambridge University Press:  21 January 2018

Lotfi Beghou*
Electrical and Computer Engineering, University of British Columbia, Vancouver, British Columbia, CanadaV6T 1Z4
Corresponding author: L. Beghou Email:


In this paper, a theoretical study for the design of multi-source transmitters suitable for perpendicular dynamic wireless power transfer is presented. Unlike conventional systems, the concept presented here overcomes the traditional limitation on the receiver's orientation by providing an optimal distribution of the transmitted energy obtained by using different sources. For this purpose, a theoretical study of different transmitters has been achieved by solving the inverse problem. Comparison with conventional single-source transmitters carrying the same total current as the multi-source transmitters, shows a significant enhancement of the power gain when a Genetic Algorithm is used. The obtained theoretical results show power gain levels over 7.5 dB for different path lengths at different heights. At the end, a solution for a path of an infinite length is presented.

Wirelessly Powering: The Future
Copyright © Cambridge University Press 2018 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)


[1] Ryan, D.M.; LaFollette, R.M.; Salmon, L.: Microscopic batteries for micro electromechanical systems (MEMS), in Proc. of the 32 nd Intersociety Energy Conversion Engineering Conf., 1997. IECEC-97, July–August 1997, 1, 7782.Google Scholar
[2] Trevisan, R.; Costanzo, A.: State-of-the-art of contactless energy transfer (CET) systems: design rules and applications. Wireless Power Transf. 1 (2014), 1020.CrossRefGoogle Scholar
[3] Visser, H.J.: A brief history of radiative wireless power transfer, in 11th European Conf. on Antenna and Propagation, 2017, 327330.Google Scholar
[4] Ettorre, M.; Alomar, W.A.; Grbic, A.: Radiative wireless power transfer system using wideband, wide-angle slot arrays. IEEE Trans. Antennas Propag., 65 (2017), 29752982.CrossRefGoogle Scholar
[5] Mohamed, A.A.S.; Mari, A.A.; Mohammed, O.A.: Magnetic design considerations of bidirectional inductive wireless power transfer system for EV applications. IEEE Trans. Magn., 53 (6) (2017), 15.CrossRefGoogle Scholar
[6] Ravikiran, V.; Keshri, R.K.; Santos, M.M.: Inductive characteristics of asymmetrical coils for wireless power transfer, in IEEE Int. Conf. on Industrial Technology, 2017, 538542.Google Scholar
[7] Dai, J.; Ludois, D.C.: A survey of wireless power transfer and a critical comparison of inductive and capacitive coupling for small gap applications. IEEE Trans. Power Electron., 30 (2015), 60176029.CrossRefGoogle Scholar
[8] Yi, K.H.: High frequency capacitive coupling wireless power transfer using glass dielectric layers, in IEEE Wireless Power Transfer Conf., 2016, 13.Google Scholar
[9] Waffenschmidtt, E.; Staring, T.: Limitation of inductive power transfer for consumer applications, in EPE ’09 13th European Conf. on Power Electronics and Applications, September 2009, 2009, 110.Google Scholar
[10] Luo, Y.; Dahmardeh, M.; Chen, X.; Takahata, K.: A resonant-heating stent for wireless endohyperthermia treatment of restenosis. Sens. Actuators A, 236 (2015), 323333.CrossRefGoogle Scholar
[11] Luo, Y.; Chen, X.; Dahmardeh, M.; Takahata, K.: RF-Powered stent with integrated circuit breaker for safeguarded wireless hyperthermia treatment. J. Microelectromech. Syst., 24 (2015), 12931302.CrossRefGoogle Scholar
[12] Ye, D.; Yan, G.; Wang, K.; Ma, G.: Development of a micro-robot for endoscopes based on wireless power transfer. Minim. Invasive Ther. Allied Technol., 17 (3) (2008), 181189.CrossRefGoogle ScholarPubMed
[13] Lee, S.G.; Hoang, H.; Choi, Y.H.; Bien, F.: Efficiency improvement for magnetic resonance based wireless power transfer with axial-misalignment. Electron. Lett., 48 (6) (2012), 339340.CrossRefGoogle Scholar
[14] Wang, J.; Ho, S.L.; Fu, W.N.; Sun, M.: Analytical design study of a Novel Witricity charger with lateral and angular misalignments for efficient wireless energy transmission. IEEE Trans. Magn., 47 (10) (2011), 26162619.CrossRefGoogle Scholar
[15] Jonah, O.; Georgakopoulos, S.V.; Tentzeris, M.M.: Orientation insensitive power transfer by magnetic resonance for mobile devices, in Proc. 2013 IEEE Wireless Power Transfer, Perugia, Italy, May 2013, 59.Google Scholar
[16] Ng, W.M.; Zhang, C.; Lin, D.; Ron Hui, S.Y.: Two- and three-dimensional omnidirectional wireless power transfer. IEEE Trans. Power Electron., 29 (9) (2014), 44704474.CrossRefGoogle Scholar
[17] Reinhold, C.; Scholz, P.; John, W.; Hilleringmann, U.: Efficient antenna design of inductive coupled RFID-systems with high power demand. J. Commun., 2 (6) (2007), 1423.CrossRefGoogle Scholar
[18] Beghou, L., Costa, F.; Pichon, L.: Detection of electromagnetic radiations sources at the switching time scale using an inverse problem-based resolution method – application to power electronic circuits. IEEE Trans. Electromagn. Compat., 57 (1) (2015), 5360.CrossRefGoogle Scholar
[19] Abramowitz, M.; Stegun, I.A.: Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, Applied Mathematics Series 55, National Bureau of Standards, USA, June 1964.Google Scholar
[20] Michalewicz, Z.: Genetic Algorithms + Data Structures = Evolution Programs. 3rd ed., Springer, New York, 1996. Revised and extended edition.CrossRefGoogle Scholar