A Methodology for Making a Three-Coil Wireless Power Transfer System More Energy Efficient Than a Two-Coil Counterpart for Extended Transfer Distance

@article{Zhong2015AMF,
  title={A Methodology for Making a Three-Coil Wireless Power Transfer System More Energy Efficient Than a Two-Coil Counterpart for Extended Transfer Distance},
  author={W. X. Zhong and Cheng Zhang and Xun Liu and S. Y. Hui},
  journal={IEEE Transactions on Power Electronics},
  year={2015},
  volume={30},
  pages={933-942}
}
A new methodology for ensuring that a three-coil wireless power transfer system is more energy efficient than a two-coil counterpart is presented in this paper. The theoretical proof and the conditions for meeting the objective are derived and practically verified in a practical prototype. The key features of the magnetic design are to: 1) shift the current stress from the primary driving circuit to the relay resonator; and 2) generate a large relay current for maximizing magnetic coupling with… CONTINUE READING
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