Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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A Study on the Effect of Resonant Coil Size and Load Resistance on the Transmission Efficiency of Magnetic Resonance Wireless Power Transfer System

공진 코일의 크기와 부하 저항이 자계 공명 무선 전력 전송 장치의 전달 효율에 주는 영향에 관한 연구

  • Received : 2012.05.21
  • Accepted : 2012.07.10
  • Published : 2012.07.31
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Abstract

In this paper, the wireless power transfer system using the magnetic resonance was designed and the effect of resonant coil radius and load resistance to this system was analyzed by the circuit analysis method. As a result, the calculated transmitted-power is similar to measured one, and the coil size has a small effect to the coupling coefficients in the resonant frequency band. In addition, the fact that the calculated transmitted-power according to the source frequency is similar to measured one confirms that the circuit analysis methode in this paper is valid. The input side transmission efficiency ${\eta}_i$ including only the loss in the power transfer circuit is almost 90[%] with the large coil in the 10[cm] transfer distance, and 65[%] with the small coil in 1[cm]. The source side transmission efficiency ${\eta}_s$ is 30~40[%] at both coil when load resistance below 4.7[${\Omega}$] has been connected. Considering that the maximum ${\eta}_s$ is 50[%], this is valid in the practical applications.

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References

  1. Andre Kurs et. al., Wireless power transfer via strongly coupled magnetic resonances, Science, Vol. 317, pp. 83-86, 2007. https://doi.org/10.1126/science.1143254
  2. C. Zhu, et. al., Simulation and experimental analysis on Wireless energy transfer based on magnetic resonances, in Vehicle Power and Propulsion Conference, 2008. VPPC '08. IEEE, sept., pp.1-4., 2008.
  3. Young-Gin Park, A study on the magnetic resonance wireless power transfer technology, Journal of Korean Institute of Power Electronics, Vol.15, No.6, pp.47-53, 2010.
  4. Jeong-Heum Park, A Study on the Wireless Power Transfer System using Magnetic Resonance at the 1MHz Frequency Band, Journal of Korean Institute of Illuminating and Electrical Installation, Vol.26, No.1, pp.75-81, 2012. https://doi.org/10.5207/JIEIE.2012.26.1.075
  5. K. O'Brien, Inductively coupled radio frequency power transmission system for wireless systems and devices, Aachen, Germany, 2007. ISBN 978-3-83225775-0.
  6. B L. Cannon, J. F. Hoburg, D. D. Stancil, and S. C. Goldstein, Magnetic resonant coupling as a potential means for wireless power transfer to multiple small receivers, IEEE Trans. on Power Electronics, Vol.24, No.7, 2009.
  7. A. Sample, D. Meyer, and J. Smith, Analysis, experimental results, and range adaptation of magnetically coupled resonators for wireless power transfer, Industrial Electronics, IEEE Transactions on, vol. 58, no. 2, pp. 544-554, feb. 2011. https://doi.org/10.1109/TIE.2010.2046002

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  1. A Study on the Efficiency of LED Lighting Applied by Direct AC Power Using Magnetic Resonance Wireless Power Transfer System vol.27, pp.10, 2013, https://doi.org/10.5207/JIEIE.2013.27.10.015
  2. Analysis and Modeling of Wireless Power Transfer Systems using Magnetically Coupled Resonator Scheme with Relay Coils vol.28, pp.1, 2014, https://doi.org/10.5207/JIEIE.2014.28.1.069