Hostname: page-component-848d4c4894-pjpqr Total loading time: 0 Render date: 2024-06-18T17:33:35.446Z Has data issue: false hasContentIssue false
  • English
  • Français

Design of magnetic-resonant wireless power transfer links realized with two coils: comparison of solutions

Published online by Cambridge University Press:  23 April 2015

Alessandra Costanzo ,
Marco Dionigi ,
Franco Mastri ,
Mauro Mongiardo ,
Johannes A. Russer  and
Peter Russer
Alessandra Costanzo*
Affiliation:
Università di Bologna, Bologna, Italy. Phone: +39 051 209 3059
Marco Dionigi
Affiliation:
Università di Perugia, Perugia, Italy
Franco Mastri
Affiliation:
Università di Bologna, Bologna, Italy. Phone: +39 051 209 3059
Mauro Mongiardo
Affiliation:
Università di Perugia, Perugia, Italy
Johannes A. Russer
Affiliation:
Institute for Nanoelectronics, Technische Universität München, Munich, Germany
Peter Russer
Affiliation:
Institute for Nanoelectronics, Technische Universität München, Munich, Germany
*
Corresponding author: A. Costanzo Email: alessandra.costanzo@unibo.it
Get access Rights & Permissions [Opens in a new window]

Abstract

A novel approach for the rigorous design of magnetic resonant wireless power transfer links is introduced. We show how, starting from two coupled inductors and making use of general network theory, it is possible to derive analytic rules for designing the source and load terminations which provide the maximum power transfer efficiency or maximize the received power. We also show that, by adding suitable matching networks to two coupled inductors we can realize a wireless link acting as a 1:n transformer and having the all required tunable reactive elements on the primary side. The proposed topology greatly simplifies the design, since only an inductive coil and a fixed capacitance are required on the secondary side; in addition, when tuning is required due to coils misalignment or to link distance variation, it can be attained by acting on the transmitter side without the need for a feedback communication through the link. Moreover, when the load resistance is designed for maximum output power, its value is fixed and does not depend on the coupling. A numerical and experimental verification of the proposed approach is also presented.

Keywords

Wireless power transferCoupled resonatorsInductive couplingConjugate matching
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 7 , Special Issue 3-4: European Microwave Week 2014 , June 2015 , pp. 349 - 359
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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.)

References

REFERENCES

[1] Costanzo, A.; Dionigi, M.; Mastri, F.; Mongiardo, M.; Russer, J.A.; Russer, P.: Rigorous network modeling of magnetic-resonant wireless power transfer. Wireless Power Transf., 1 (1) (2014), 27–34.Google Scholar
[2] Kurs, A.; Karalis, A.; Moffatt, R.; Joannopoulos, J.D.; Fisher, P.; Soljacic, M.: Wireless power transfer via strongly coupled magnetic resonances. Science, 317 (5834) (2007), 83–86.Google Scholar
[3] Karalis, A.; Joannopoulos, J.D.; Soljačić, M.: Efficient wireless non-radiative mid-range energy transfer. Ann. Phys., 323 (1) (2008), 34–48.Google Scholar
[4] Zhu, C.; Yu, C.; Liu, K.; Ma, R.: Research on the topology of wireless energy transfer device, in Vehicle Power and Propulsion Conf., 2008. VPPC'08. IEEE, October 2008, 1–5.Google Scholar
[5] Si, P.; Hu, A.P.; Malpas, S.; Budgett, D.: A frequency control method for regulating wireless power to implantable devices. IEEE Trans. Biomed. Circuits Syst., 2 (1) (2008), 22–29.Google Scholar
[6] Imura, T.; Okabe, H.; Hori, Y.: Basic experimental study on helical antennas of wireless power transfer for electric vehicles by using magnetic resonant couplings. In Vehicle Power and Propulsion Conf., 2009, VPPC'09. IEEE, September 2009, 936–940.CrossRefGoogle Scholar
[7] Low, Z.N.; Chinga, R.A.; Tseng, R.; Lin, J.: Design and test of a high-power high-efficiency loosely coupled planar wireless power transfer system. IEEE Trans. Ind. Electron. , 56 (5) (2009), 1801–1812.Google Scholar
[8] Low, Z.N.; Casanova, J.J.; Maier, P.H.; Taylor, J.A.; Chinga, R.A.; Lin, J.: Method of load/fault detection for loosely coupled planar wireless power transfer system with power delivery tracking. IEEE Trans. Ind. Electron., 57 (4) (2009), 1478–1486.Google Scholar
[9] Chen, C.-J.; Chu, T.-H.; Lin, C.-L.; Jou, Z.-C.: A study of loosely coupled coils for wireless power transfer. IEEE Trans. Circuits Syst. II: Express Briefs, 57 (7) (2010), 536–540.Google Scholar
[10] Cannon, B.L.; Hoburg, J.F.; Stancil, D.D.; Goldstein, S.C.: Magnetic resonant coupling as a potential means for wireless power transfer to multiple small receivers. IEEE Trans. Power Electron., 24 (7) (2009), 1819–1825.Google Scholar
[11] Mastri, F.; Costanzo, A.; Dionigi, M.; Mongiardo, M.: Harmonic balance design of wireless resonant-type power transfer links, in Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS), 2012 IEEE MTT-S Int., 2012, 245–248.Google Scholar
[12] Costanzo, A.; Dionigi, M.; Mastri, F.; Mongiardo, M.: Wireless resonant-type power transfer links with relay elements: harmonic balance design, in Proc. of the 42nd European Microwave Conf. (EuMC), October 2012, 225–228.Google Scholar
[13] Costanzo, A.; Dionigi, M.; Mastri, F.; Mongiardo, M.: Rigorous modeling of mid-range wireless power transfer systems based on Royer oscillators, in Wireless Power Transfer (WPT), 2013 IEEE, 2013, 69–72.Google Scholar
[14] Sample, A.P.; Meyer, D.A.; Smith, J.R.: Analysis, experimental results, and range adaptation of magnetically coupled resonators for wireless power transfer. IEEE Trans. Ind. Electron., 58 (2) (2011), 544–554.Google Scholar
[15] Lee, J.; Nam, S.: Fundamental aspects of near-field coupling small antennas for wireless power transfer. IEEE Trans. Antennas Propag., 58 (11) (2010), 3442–3449.Google Scholar
[16] Yuan, Q.; Chen, Q.; Li, L.; Sawaya, K.: Numerical analysis on transmission efficiency of evanescent resonant coupling wireless power transfer system. IEEE Trans. Antennas Propag., 58 (5) (2010), 1751–1758.CrossRefGoogle Scholar
[17] Dionigi, M.; Franceschetti, G.; Mongiardo, M.: Resonant wireless power transfer: investigation of radiating resonances, in Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS), 2013 IEEE, 2013, 17–20.CrossRefGoogle Scholar
[18] Dionigi, M.; Mongiardo, M.: CAD of wireless resonant energy links (WREL) realized by coils, in IEEE MTT-S Int. Microwave Symp. Digest, 2010, 1760–1763.Google Scholar
[19] Dionigi, M.; Mongiardo, M.: CAD of efficient wireless power transmission systems, in IEEE MTT-S Int. Microwave Symp. Digest (MTT), 2011, 2011, 1–4.Google Scholar
[20] Dionigi, M.; Mongiardo, M.: Efficiency investigations for wireless resonant energy links realized with resonant inductive coils, in German Microwave Conf. (GeMIC), 2011, 1–4.Google Scholar
[21] Zhao, B.; Yu, Q.; Leng, Z.; Chen, X.: Switched z-source isolated bidirectional DC-DC converter and its phase-shifting shoot-through bivariate coordinated control strategy. IEEE Trans. Ind. Electron., 59 (12) (2012), 4657–4670.Google Scholar
[22] Russer, J.A.; Russer, P.: Design considerations for a moving field inductive power transfer system, in IEEE Int. Wireless Power Transfer Conf. (WPTC), Perugia, Italy, May 15–16 2013, 2013, 1–4.Google Scholar
[23] Inagaki, N.: Theory of image impedance matching for inductively coupled power transfer systems. IEEE Trans. Microw. Theory Tech., 62 (4) (2014), 901–908.Google Scholar
[24] Roberts, S.: Conjugate-image impedances, in Proc. of the IRE, 1946, 198–204.Google Scholar
[25] Bird, T.S.; Rypkema, N.; Smart, K.W.: Antenna impedance matching for maximum power transfer in wireless sensor networks, in Sensors, 2009 IEEE, 2009, 916–919.Google Scholar
[26] Zargham, M.; Gulak, P.G.: Maximum achievable efficiency in near-field coupled power-transfer systems. IEEE Trans. Biomed. Circuits Syst., 6 (3) (2011), 228–245.Google Scholar
[27] Dionigi, M.; Mongiardo, M.; Perfetti, R.: Rigorous network and full-wave electromagnetic modeling of wireless power transfer links. IEEE Trans. Microw. Theory Tech., 63 (1) (2015), 65–75.Google Scholar
[28] Costanzo, A.; Dionigi, M.; Mastri, F.; Mongiardo, M.; Russer, J.A.; Russer, P.: Rigorous design of magnetic-resonant wireless power transfer links realized with two coils, in European Microwave Conf., 2014, 1–8.Google Scholar