A Generic Matrix Method to Model the Magnetics of Multi-Coil Air-Cored Inductive Power Transfer Systems

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Abstract

This paper deals with a generic methodology to evaluate the magnetic parameters of contactless power transfer systems. Neumann's integral has been used to create a matrix method that can model the magnetics of single coils (circle, square, rectangle). The principle of superposition has been utilized to extend the theory to multi-coil geometries, such as double circular, double rectangle and double rectangle quadrature. Numerical and experimental validation has been performed to validate the analytical models developed. A rigorous application of the analysis has been carried out to study misalignment and hence the efficacy of various geometries to misalignment tolerance. The comparison of single-coil and multi-coil inductive power transfer systems (MCIPT) considering coupling variation with misalignment, power transferred and maximum efficiency is carried out.

Original languageEnglish
Article number774
Pages (from-to)1-17
Number of pages17
JournalEnergies
Volume10
Issue number6
DOIs
Publication statusPublished - 2017

Keywords

  • Air-cored
  • Contactless
  • Coupling
  • Inductive power transfer
  • Magnetics
  • Matrix
  • Modeling
  • Multi-coil

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