Resonant Network Design Method to Reduce Influence of Mutual Inductance between Receivers in Multi-Output Omnidirectional Wireless Power Transfer Systems

Dong-Hun Woo, Hwa-Rang Cha and Rae-Young Kim
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Dong-Hun Woo: The Department of Electrical and Biomedical Engineering, Hanyang University, Seoul 04763, Korea
Hwa-Rang Cha: The Department of Electrical and Biomedical Engineering, Hanyang University, Seoul 04763, Korea
Rae-Young Kim: The Department of Electrical and Biomedical Engineering, Hanyang University, Seoul 04763, Korea

Energies, 2020, vol. 13, issue 21, 1-15

Abstract: Many studies have been conducted on multi-output systems that transfer power to multiple receivers in conventional planar-type wireless power transfer (WPT) systems; however, few studies and analyses have taken into account the mutual inductance between receivers in multi-output omnidirectional WPT systems. In this paper, the correlation between the mutual inductance between receivers and the power transfer efficiency (PTE) in a multi-output omnidirectional WPT system is analyzed, and a limitation in terms of a reduction in the PTE with an increase in the influence of the mutual inductance between the receivers is presented. To solve this problem, a resonant network design method is proposed to reduce the influence of mutual inductance between receivers, and appropriate canceling capacitor values are selected using the weighted sum method among multi-objective optimization methods. The proposed method is through simulations and experiments, and it presents the potential for improvement in the problems that occur when transferring power to multiple receivers.

Keywords: wireless power transfer (WPT) system; omnidirectional WPT system; multi–output; mutual inductance; resonant network (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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