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Modelling and Design for Position-Free Inductive Couplers with the Homogeneous-Flux Transmitting Coil in Wireless Power Transfer Systems
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  • Yi Dou ,
  • Xiaosheng Huang ,
  • Ziwei Ouyang ,
  • Michael A. E. Andersen
Yi Dou
Resonant Link Inc.

Corresponding Author:[email protected]

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Xiaosheng Huang
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Ziwei Ouyang
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Michael A. E. Andersen
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Abstract

This paper presents a design algorithm to combine the analytical magnetic flux modelling and the genetic algorithm (GA) for position-free inductive couplers in inductive power transfer (IPT) systems. The design concept can enhance the position tolerance significantly by making the transmitting coil generate a homogeneous flux density at the target receiving position. Based on the analytical magnetic flux models and the proposed design algorithm, the winding configurations for the air-core transmitting coils or magnetic shielded transmitter coils can be directly generated. Two case studies demonstrate the design algorithm: the analytical magnetic flux models and the generated homogeneous flux density are verified by 2D FEM simulation and measurement results. Furthermore, the non-interference for the inverters’/rectifiers’ operation with the position shift is experimentally verified on the 6.78 MHz prototypes.