Wireless power transfer using relay resonators

Chitta Saha, Ihechiluru Fortune Chinatu Anya, Cristina Alexandru, Robert Jinks

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)
    195 Downloads (Pure)


    This paper presents an advanced design configuration of a wireless power transfer system using overlapping relay coil techniques for free loading position. The work undertaken investigates the tuning position of prototype relay coils in a horizontal configuration in order to evaluate power transfer efficiency versus increasing operating distance between the transmitter and receiver coils. A prototype relay coil system was evaluated to determine the optimum distance between the transmitter and receiver. Finite element magnetic (FEM) simulation was used to appraise the magnetic field distribution and power transfer efficiency with respect to a strongly coupled magnetic resonance condition. Experimental and simulation results analysis suggest that the proposed design could achieve 85% to 90% efficiency within a 4 cm operational distance. Finally, the experimental results were analyzed and compared with the simulation results.
    Original languageEnglish
    Article number263902
    JournalApplied Physics Letters
    Issue number26
    Early online date28 Jun 2018
    Publication statusPublished - Jun 2018


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