Wenxing Zhong

TL;DR: In this paper, a critical review outlines recent magneto-inductive research activities on wireless power transfer with the transmission distance greater than the transmitter coil dimension, and summarizes the operating principles of a range of wireless power research into the maximum power transfer and the maximum energy efficiency principles.

TL;DR: In this paper, a method for automatic "maximum energy efficiency tracking" operation for wireless power transfer (WPT) systems is presented using the switchedmode converter in the receiver module to emulate the optimal load value, the proposed method follows the maximum energy efficiency operating points of a WPT system by searching for the minimum input power operating point for a given output power.

TL;DR: It is demonstrated both theoretically and practically that unequal spacing for the coaxial straight domino systems has better efficiency performance than the equal-spacing method and the flexibility of using resonators in various domino forms is demonstrated.

TL;DR: In this paper, the effects of the magnetic coupling of nonadjacent resonators on the optimal frequency of wireless power transfer are addressed, and the theoretical reasons for such phenomena are provided and experimentally confirmed with practical measurements in a WPT system comprising several magnetically coupled resonators arranged in a straight domino form.

TL;DR: A new single-layer winding array and receiver coil structure with cylindrical ferrite cores for planar contactless battery charging systemsplying with the “Qi” standard, this design enables multiple devices to be placed and charged simultaneously on the wireless charging pad in a free-positioning manner.