MATEC Web of Conferences (Jan 2016)

A study on Relay Effect via Magnetic Resonant Coupling for Wireless Power Transfer

  • Rashid N.A.,
  • Yasin M.N.M.,
  • Kamardin K.,
  • Ramli N.,
  • Jusoh M.,
  • Murad S.A.Z.,
  • Sulaiman M.I.

DOI
https://doi.org/10.1051/matecconf/20167801095
Journal volume & issue
Vol. 78
p. 01095

Abstract

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Wireless power transfer (WPT) transmits electrical energy from a power source to an electrical load wirelessly or without any conductors. The capability of WPT to transmit the energy is limited. Therefore, a relay was introduced to increase the distance of the WPT capabilities. The effect of the relay has been investigated to extend the energy transfer distance. The effect of relay was demonstrated by placing a relay coil between transmitter and receiver, relay biased to transmitter and placing two relay coils in the designed system. Experimental results are provided to prove the concept of the relay effect. The power transmission efficiency can be achieved up to 75% at 1 meter distance.