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http://dx.doi.org/10.5573/ieie.2015.52.2.070

Design of Two-Dimensional Resonant Wireless Power Transfer Using 90˚ Phase Shifted Inputs  

Kim, Sanghwan (Information and Telecommunication Engineering, Soongsil University)
Seo, Chulhun (Information and Telecommunication Engineering, Soongsil University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.52, no.2, 2015 , pp. 70-74 More about this Journal
Abstract
In this paper, two-dimensional resonant transmitter and receiver for WPT is designed and implemented using method that use $90^{\circ}$ phase shifted input power to orthogonal transmitter. Mutual inductance is minimized by using proposed each orthogonal coil of receiver and the method that inputs $90^{\circ}$ phase shifted power is used to radiate magnetic energy into two dimension. This method facilitates two dimensional resonant WPT by solving power efficiency degradation problem according to location in general WPT. The resonance frequency is 6.78 MHz and the distance between transmitting and receiving resonator is 200 mm. The transfer efficiency of the proposed wireless power transfer system is higher than 40 % at all direction.
Keywords
wireless power transfer; resonant; two-dimension; 6.78 MHz; transfer efficiency;
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