Electromagnetic modeling and optimization of magnetic resonant coupling wireless power transfer using coil array

A novel planar wireless power transfer system via magnetically-coupled resonance (MCR-WPT) is presented. It utilizes a transmitter coil array to generate provides consistent power transfer efficiency when the receiver is axially misaligned with the transmitter. In this paper, an optimization scheme is derived by combined use of HFSS/Q3D, Designer/ADS and MATLAB to improve the transfer efficiency of the WPT design. With the proposed optimization strategy, both the memory requirement and CPU cost in computer aided designs and simulations are significantly reduced in comparison with the conventional full-wave electromagnetic modeling. The resultant optimized design of MCR-WPT system is validated with the measurement results.