Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
권호 표지
DOI QR코드

DOI QR Code

New Analysis Method for Wireless Power Transfer System with Multiple n Resonators

  • Kim, Ju-Hui (Department of Electronic Information and Communication Engineering, Hongik University) ;
  • Park, Byung-Chul (Department of Electronic Information and Communication Engineering, Hongik University) ;
  • Lee, Jeong-Hae (Department of Electronic Information and Communication Engineering, Hongik University)
  • Received : 2013.05.23
  • Accepted : 2013.06.27
  • Published : 2013.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents a new method for analyzing the maximum efficiency of a wireless power transfer (WPT) system with multiple n resonators. The method is based on ABCD matrices and allows transformation of the WPT system with multiple n resonators into a single two-port network system. The general maximum efficiency equation of a WPT system with multiple n resonators is derived using the ABCD matrix. Use of this equation allows placement of the relay resonators for maximum efficiency even though they are asymmetrical. The general maximum efficiency equation and the method of the optimum placement are verified by a full wave simulation. The results show that the method is useful for the analysis of a WPT system with relay resonators.

Keywords

References

  1. A. Kurs, A. Karalis, R. Moffatt, J. D. Joannopoulos, P. Fisher, and M. Soljacic, "Wireless power transfer via strongly coupled magnetic resonances," Science, vol. 317, no. 5834, pp. 83-86, Jul. 2007. https://doi.org/10.1126/science.1143254
  2. C. Kim and B. Lee, "Analysis of magnetically coupled wireless power transmission for maximum efficiency," Journal of the Korea Electromagnetic Engineering Society, vol. 11, no. 3, pp. 156-160, Sep. 2011. https://doi.org/10.5515/JKIEES.2011.11.3.156
  3. B. C. Park, J. H. Park, and J. H. Lee, "High-Q spiral zeroth-order resonators for wireless power transmission," Journal of Electromagnetic Engineering and Science, vol. 23, no. 3, pp. 343-354, Sep. 2012. https://doi.org/10.5515/KJKIEES.2012.23.3.343
  4. F. Zhang, S. A. Hackworth, W. Fu, and M. Sun, "The relay effect on wireless power transfer using witricity," in Proceedings of the 14th Biennial IEEE Conference on Electromagnetic Field Computation, Chicago, IL, 2010.
  5. W. Zhong, C. K. Lee, and S. Y. R. Hui, "General analysis on the use of Tesla's resonators in domino forms for wireless power transfer," IEEE Transactions on Industrial Electronics, vol. 60, no. 1, pp. 261-270, Jan. 2013. https://doi.org/10.1109/TIE.2011.2171176
  6. D. M. Pozar, Microwave Engineering, 3rd ed., Hoboken, NJ: John Wiley & Sons, 2005.
  7. J. H. Park, B. C. Park, and J. H. Lee, "Optimum frequency of high Q-factor resonator for magnetic resonance coupling," in Proceedings of the 41st European Microwave Conference, Manchester, UK, 2011, pp. 61-63.
  8. K. Fotopoulou and B. W. Flynn, "Wireless power transfer in loosely coupled links: coil misalignment model," IEEE Transactions on Magnetics, vol. 47, no. 2, pp. 416-430, Feb. 2011. https://doi.org/10.1109/TMAG.2010.2093534

Cited by

  1. Magnetic Resonance-Based Wireless Power Transmission through Concrete Structures vol.15, pp.2, 2015, https://doi.org/10.5515/JKIEES.2015.15.2.104
  2. Realization of Alignment-Free WPT System vol.14, pp.4, 2014, https://doi.org/10.5515/JKIEES.2014.14.4.329
  3. Advanced Power Control Scheme in Wireless Power Transmission for Human Protection From EM Field vol.63, pp.3, 2015, https://doi.org/10.1109/TMTT.2015.2398444
  4. Compact Wake-Up Module Design Based on an Energy-Harvesting Rectenna for Wireless Sensor Receivers vol.2015, 2015, https://doi.org/10.1155/2015/976875
  5. Adaptive Impedance Matching of Wireless Power Transmission Using Multi-Loop Feed With Single Operating Frequency vol.62, pp.5, 2014, https://doi.org/10.1109/TAP.2014.2307340
  6. Enhancement of wireless power transfer efficiency using flat conductor with ferrite wall vol.57, pp.10, 2015, https://doi.org/10.1002/mop.29350
  7. Near-Field Beamforming Loop Array for Selective Wireless Power Transfer vol.25, pp.11, 2015, https://doi.org/10.1109/LMWC.2015.2479858
  8. Design of Asymmetrical Relay Resonators for Maximum Efficiency of Wireless Power Transfer vol.2016, 2016, https://doi.org/10.1155/2016/8247476