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Maximum efficiency solution for capacitive wireless power transfer with N receivers

Published online by Cambridge University Press:  19 March 2020

Ben Minnaert Open the ORCID record for Ben Minnaert [Opens in a new window] ,
Mauro Mongiardo ,
Alessandra Costanzo Open the ORCID record for Alessandra Costanzo [Opens in a new window]  and
Franco Mastri
Ben Minnaert*
Affiliation:
Odisee University College of Applied Sciences, Ghent, Belgium
Mauro Mongiardo
Affiliation:
Department of Engineering, University of Perugia, Perugia, Italy
Alessandra Costanzo
Affiliation:
Department of Electrical, Electronic and Information Engineering Guglielmo Marconi, University of Bologna, Bologna, Italy
Franco Mastri
Affiliation:
Department of Electrical, Electronic and Information Engineering Guglielmo Marconi, University of Bologna, Bologna, Italy
*
Author for correspondence: Ben Minnaert, Odisee University College of Applied Sciences, Ghent, Belgium. E-mail: ben.minnaert@odisee.be
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Abstract

Typical wireless power transfer (WPT) systems on the market charge only a single receiver at a time. However, it can be expected that the need will arise to charge multiple devices at once by a single transmitter. Unfortunately, adding extra receivers influences the system efficiency. By impedance matching, the loads of the system can be adjusted to maximize the efficiency, regardless of the number of receivers. In this work, we present the analytical solution for achieving maximum system efficiency with any number of receivers for capacitive WPT. Among others, we determine the optimal loads and the maximum system efficiency. We express the efficiency as a function of a single variable, the system kQ-product and demonstrate that load capacitors can be inserted to compensate for any cross-coupling between the receivers.

Keywords

Capacitivecomponents and circuitsefficiency and optimization
Type
Research Article
Information
Wireless Power Transfer , Volume 7 , Issue 1 , March 2020 , pp. 65 - 75
Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press

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References

Trevisan, R and Costanzo, A (2014) State-of-the-art of contactless energy transfer (CET) systems: design rules and applications. Wireless Power Transfer 1, 10–20.CrossRefGoogle Scholar
Lu, X, Wang, P, Niyato, D, Kim, DI and Han, Z (2016) Wireless charging technologies: fundamentals, standards, and network applications. IEEE Communications Surveys and Tutorials 18, 1413–1452.CrossRefGoogle Scholar
Jawad, AM, Nordin, R, Gharghan, SK, Jawad, HM and Ismail, M (2017) Opportunities and challenges for near-field wireless power transfer: a review. Energies 10, 1022.CrossRefGoogle Scholar
Kithany, D and Markides, M (2019) Wireless Power Market Tracker. IHS Markit, London, UK, Rep. Q1-2019.Google Scholar
Fu, M, Zhang, T, Ma, C and Zhu, X (2015) Efficiency and optimal loads analysis for multiple-receiver wireless power transfer systems. IEEE Transactions on Microwave Theory and Techniques 63, 801–812.CrossRefGoogle Scholar
Liu, X, Wang, G and Ding, W (2014) Efficient circuit modelling of wireless power transfer to multiple devices. IET Power Electronics 7, 3017–3022.CrossRefGoogle Scholar
Kim, J, Kim, DH and Park, YJ (2014) Analysis of capacitive impedance matching networks for simultaneous wireless power transfer to multiple devices. IEEE Transactions on Industrial Electronics 62, 2807–2813.CrossRefGoogle Scholar
Fu, M, Zhang, T, Zhu, X, Luk, PCK and Ma, C (2016) Compensation of cross coupling in multiple-receiver wireless power transfer systems. IEEE Transactions on Industrial Informatics 12, 474–482.CrossRefGoogle Scholar
Sugiyama, R, Duong, QT and Okada, M (2017) kQ-product analysis of multiple-receiver inductive power transfer with cross-coupling. International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT), Athens, Greece, 2017.CrossRefGoogle Scholar
Duong, QT and Okada, M (2016) Maximum efficiency formulation for inductive power transfer with multiple receivers. IEICE Electronics Express 13, 20160915.CrossRefGoogle Scholar
Monti, G, Che, W, Wang, Q, Dionigi, M, Mongiardo, M, Perfetti, R and Chang, Y (2016) Wireless power transfer between one transmitter and two receivers: optimal analytical solution. Wireless Power Transfer 3, 63–73.CrossRefGoogle Scholar
Lu, F, Zhang, H and Mi, C (2017) A review on the recent development of capacitive wireless power transfer technology. Energies 10, 1752.CrossRefGoogle Scholar
Lu, F, Zhang, H and Mi, C (2018) A two-plate capacitive wireless power transfer system for electric vehicle charging applications. IEEE Transactions on Power Electronics 33, 964–969.CrossRefGoogle Scholar
Li, S, Liu, Z, Zhao, H, Zhu, L, Shuai, C and Chen, Z (2016) Wireless power transfer by electric field resonance and its application in dynamic charging. IEEE Transactions on Industrial Electronics 63, 6602–6612.CrossRefGoogle Scholar
Zhang, H, Lu, F, Hofmann, H, Liu, W and Mi, CC (2016) A four-plate compact capacitive coupler design and LCL-compensated topology for capacitive power transfer in electric vehicle charging application. IEEE Transactions on Power Electronics 31, 8541–8551.Google Scholar
Komaru, T and Akita, H (2013) Positional characteristics of capacitive power transfer as a resonance coupling system. IEEE Wireless Power Transfer (WPT), May 2013.CrossRefGoogle Scholar
Zhang, H, Lu, F, Hofmann, H, Liu, W and Mi, CC (2017) Six-plate capacitive coupler to reduce electric field emission in large air-gap capacitive power transfer. IEEE Transactions on Power Electronics 33, 665–675.CrossRefGoogle Scholar
Rozario, D, Azeez, NA and Williamson, SS (2016) Comprehensive review and comparative analysis of compensation networks for capacitive power transfer systems. IEEE 25th International Symposium on Industrial Electronics (ISIE), 2016.CrossRefGoogle Scholar
Kumar, A, Pervaiz, S, Chang, CK, Korhummel, S, Popovic, Z and Afridi, KK (2015) Investigation of power transfer density enhancement in large air-gap capacitive wireless power transfer systems. IEEE Wireless Power Transfer Conference, 2015.CrossRefGoogle Scholar
Mi, C (2015) High power capacitive power transfer for electric vehicle charging applications. The 6th IEEE International Conference on Power Electronics Systems and Applications (PESA), Hong Kong, China, 2015.CrossRefGoogle Scholar
Karabulut, A, Bilic, HG and Ozdemir, S (2018) Capacitive Power Transfer Theory and the Overview of its Potential. 3rd International Mediterranean Science and Engineering Congress, Adana, Turkey, 2018.Google Scholar
Huang, L, Hu, P, Swain, A and Su, YZ (2016) Impedance compensation for wireless power transfer based on electric field coupling. IEEE Transactions on Power Electronics 33, 7556–7563.CrossRefGoogle Scholar
Xia, C, Zhou, Y, Zhang, J and Li, C (2012) Comparison of power transfer characteristics between CPT and IPT system and mutual inductance optimization for IPT system. Journal of Computers 7, 2734–2741.CrossRefGoogle Scholar
Culurciello, E and Andreou, AG (2006) Capacitive inter-chip data and power transfer for 3-D VLSI. IEEE Transactions on Circuits and Systems II: Express Briefs 53, 1348–1352.CrossRefGoogle Scholar
Mostafa, T, Muharam, A and Hattori, R (2017) Wireless battery charging system for drones via capacitive power transfer. Proceedings of the IEEE Workshop on Emerging Technologies: Wireless Power Transfer, Chongqing, China, 2017.CrossRefGoogle Scholar
Hu, AP, Liu, C and Li, H (2008) A novel contactless battery charging system for soccer playing robot. Proceedings of the International Conference on Mechatronics and Machine Vision in Practice, Auckland, New Zealand, 2008.CrossRefGoogle Scholar
Theodoridis, MP (2012) Effective capacitive power transfer. IEEE Transactions on Power Electronics 27, 4906–4913.CrossRefGoogle Scholar
Sodagar, A and Amiri, P (2009) Capacitive coupling for power and data telemetry to implantable biomedical microsystems. Proceedings of the IEEE Conference on Neural Engineering, Antalya, Turkey, 2009.CrossRefGoogle Scholar
Jegadeesan, R, Agarwal, K, Guo, Y, Yen, S and Thakor, N (2017) Wireless power delivery to flexible subcutaneous implants using capacitive coupling. IEEE Transactions on Microwave Theory and Techniques 65, 280–292.CrossRefGoogle Scholar
Dai, J and Ludois, DC (2015) Wireless electric vehicle charging via capacitive power transfer through a conformal bumper. Proceedings of the IEEE Applied Power Electronics Conference and Exposition (APEC), Charlotte, NC, USA, 2015.CrossRefGoogle Scholar
Miyazaki, M, Abe, S, Suzuki, Y, Sakai, N, Ohira, T and Sugino, M (2017) Sandwiched parallel plate capacitive coupler for wireless power transfer tolerant of electrode displacement. Proceedings of the IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM), Nagoya, Japan, 2017.CrossRefGoogle Scholar
Kim, G, Boo, S, Kim, S and Lee, B (2018) Control of power distribution for multiple receivers in SIMO wireless power transfer system. Journal of Electromagnetic Engineering and Science 18, 221–230.CrossRefGoogle Scholar
Huang, L and Hu, AP (2015) Defining the mutual coupling of capacitive power transfer for wireless power transfer. Electronics Letters 51, 1806–1807.CrossRefGoogle Scholar
Hong, JSG and Lancaster, MJ (2001) Microstrip Filters for RF/Microwave Applications, 1st Edn. New York, NY, USA: John Wiley & Sons, pp. 235–253.CrossRefGoogle Scholar
Minnaert, B and Stevens, N (2017) Conjugate image theory applied on capacitive wireless power transfer. Energies 10, 46.CrossRefGoogle Scholar
Kracek, J and Svanda, M (2018) Analysis of capacitive wireless power transfer. IEEE Access 7, 26678–26683.CrossRefGoogle Scholar
Boyd, S and Vandenberghe, L (2004) Convex Optimization, 2nd Edn. Cambridge: Cambridge University Press, p. 140.CrossRefGoogle Scholar
Minnaert, B and Stevens, N (2017) Single variable expressions for the efficiency of a reciprocal power transfer system. International Journal of Circuit Theory and Applications 10, 1418–1430.CrossRefGoogle Scholar
Ohira, T (2014) Extended k-Q product formulas for capacitive-and inductive-coupling wireless power transfer schemes. IEICE Electronics Express 11, 20140147.CrossRefGoogle Scholar
Ujihara, T, Duong, QT and Okada, M (2017) kQ-product analysis of inductive power transfer system with two transmitters and two receivers. IEEE Wireless Power Transfer Conference, Taipei, Taiwan, 2017.CrossRefGoogle Scholar
Duong, QT and Okada, M (2017) kQ-product formula for multiple-transmitter inductive power transfer system. IEICE Electronics Express (2017), 14-20161167.CrossRefGoogle Scholar
Dionigi, M, Mongiardo, M, Monti, G and Perfetti, R (2017) Modelling of wireless power transfer links based on capacitive coupling. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields 30, e2187.CrossRefGoogle Scholar
Minnaert, B and Stevens, N (2017) Optimal analytical solution for a capacitive wireless power transfer system with one transmitter and two receivers. Energies 10, 1444.CrossRefGoogle Scholar
Montgomery, CG, Dicke, RH and Purcell, EM (1948) Principles of Microwave Circuits. York, PA: IET.Google Scholar