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Multi sub-coil flux pipe couplers and their use in a misalignment-adaptive wireless power transfer system

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  • Seyit Ahmet Sis
  • Fuat Kilic
  • Serkan Sezen

Abstract

Flux pipe couplers are compact coils used in wireless power transfer (WPT) applications. The first part of this paper investigates the effect number of sub-coils on the magnetic characteristics. Flux pipe couplers with more than two sub-coils exhibit higher coupling coefficient as compared to traditional flux pipe couplers with two sub-coils. Furthermore, multi sub-coil flux pipe couplers better distribute the magnetic flux inside the core, making them attractive in high power applications. The second part presents an experimental WPT system employing multi sub-coil flux pipe couplers with three sub-coils. More than 82% power transfer efficiency is observed when couplers are separated with 100 mm vertical gap. Lateral misalignments up to 200 mm are then applied, and meantime, the separation between sub-coils is varied for achieving maximum efficiency. A near-constant efficiency is obtained up to 150 mm misalignment. Therefore, this paper announces another potential use of flux pipe couplers realizing an adaptive WPT system.

Suggested Citation

  • Seyit Ahmet Sis & Fuat Kilic & Serkan Sezen, 2019. "Multi sub-coil flux pipe couplers and their use in a misalignment-adaptive wireless power transfer system," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 33(14), pages 1890-1904, September.
    • Handle: RePEc:taf:tewaxx:v:33:y:2019:i:14:p:1890-1904
    DOI: 10.1080/09205071.2019.1652117
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