Free-Positioning Wireless Power Transfer Using a 3D Transmitting Coil for Portable Devices

Journal of Electromagnetic Engineering and Science

Kwangsuk Park¹  Hoang Le-Huu²  Chulhun Seo²  Nam Ha-Van²  Minh Thuy Le³ 

[1] Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul, Korea;Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul, Korea;Department of Instrument and Industrial Informatics, School of Electrical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam;

关键词: cubic-shaped;    free-positioning;    magnetic resonant coupling;    wireless power transfer (wpt);   

DOI  :  10.26866/jees.2020.20.4.270

来源: DOAJ

【 摘 要 】

The free-positioning wireless power transfer (WPT) system has drawn attention in recent years. Traditionally, a WPT system can transfer energy in one or two directions on the same plane, but it leads the restrictions of angle and axis misalignment between a transmitter and a receiver coil. In this paper, we propose a free-positioning WPT system using a three-dimensional cubic-shaped transmitting coil for portable device charging. A small receiving coil is placed inside the transmitter to achieve the transferred energy through the magnetic resonant coupling. In addition, the equivalent circuit and the mutual inductance between the Tx and Rx coils are analyzed. Finally, a practical experiment is implemented to verify the transfer performance, which can reach up to about 50% power transfer efficiency. The proposed system can charge in spatial freedom.

【 授权许可】

Unknown