Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Frequency-Domain Circuit Model and Analysis of Coupled Magnetic Resonance Systems

  • Received : 2011.08.10
  • Published : 2013.03.20
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Abstract

An explicit frequency-domain circuit model for the conventional coupled magnetic resonance system (CMRS) is newly proposed in this paper. Detail circuit parameters such as the leakage inductances, magnetizing inductances, turn-ratios, internal coil resistances, and source/load resistances are explicitly included in the model. Accurate overall system efficiency, DC gain, and key design parameters are deduced from the model in closed form equations, which were not available in previous works. It has been found that the CMRS can be simply described by an equivalent voltage source, resistances, and ideal transformers when it is resonated to a specified frequency in the steady state. It has been identified that the voltage gain of the CMRS was saturated to a specific value although the source side or the load side coils were strongly coupled. The phase differences between adjacent coils were ${\pi}/2$, which should be considered for the EMF cancellations. The analysis results were verified by simulations and experiments. A detailed circuit-parameter-based model was verified by experiments for 500 kHz by using a new experimental kit with a class-E inverter. The experiments showed a transfer of 1.38 W and a 40 % coil to coil efficiency.

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References

  1. Y. T. Jang and M. M. Jovanovic, "A contactless electrical energy transmission system for portable-telephone battery chargers," IEEE Trans. Ind. Electron., Vol. 50, pp. 520-527, Jun. 2003. https://doi.org/10.1109/TIE.2003.812472
  2. J. Huh, S. W. Lee, W. Y. Lee, G. H. Cho, and C. T. Rim, "Narrow-width inductive power transfer system for on-line electrical vehicles," IEEE Trans. Power Electron., Vol. 26, No. 12, pp. 3666-3679, Dec. 2011. https://doi.org/10.1109/TPEL.2011.2160972
  3. N. P. Suh, D. H. Cho, and C. T. Rim, "Design of on-line electric vehicle (olev)," Plenary lecture at the 2010 CIRP Design Conference in Nantes, France, Apr. 2010.
  4. J. Huh, S. W. Lee, C. B. Park, G. H. Cho, and C. T. Rim, "High performance inductive power transfer system with narrow rail width for on-line electric vehicles," in IEEE Energy Conversion Congress and Exposition (ECCE), pp. 647-651, Sep. 2010.
  5. S. W. Lee, J. Huh, C. B. Park, N. S. Choi, G. H. Cho, and C. T. Rim, "On-line electric vehicle using inductive power transfer system," in IEEE Energy Conversion Congress and Exposition (ECCE), pp. 1598-1601, Sep. 2010.
  6. J. Huh, W. Y. Lee, G. H. Cho, B. H. Lee, and C. T. Rim, "Characterization of novel inductive power transfer systems for on-line electric vehicles," in IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 1975-1979, Mar. 2011.
  7. S. W. Lee, W. Y. Lee, J. Huh, H. J. Kim, C. B. Park, G. H. Cho, and C. T. Rim, "Active emf cancellation method for i-type pick-up of on-line electric vehicles," in IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 1980-1983, Mar. 2011.
  8. J. Huh and C. T. Rim, "KAIST wireless electric vehicles - olev," JSAE Annual Congress, May 2011.
  9. B. H. Lee, H. J. Kim, S. W. Lee, C. B. Park, and C. T. Rim, "Resonant power shoes for humanoid robots," in IEEE Energy Conversion Congress and Exposition (ECCE), pp. 1791-1794, Sep. 2011.
  10. A. Kurs, A. Karalis, R. Moffatt, J. D. Joannopoulos, P. Fisher, and M. Soljacic, "Wireless power transfer via strongly coupled magnetic resonance," Science, Vol. 317, No. 5834, pp. 83-86, Jun. 2007. https://doi.org/10.1126/science.1143254
  11. A. P. Sample, D. T. Meyer, and J. R. Smith, "Analysis, experimental results, and range adaption of magnetically coupled resonator for Wireless Power Transfer," IEEE Trans. Ind. Electron., Vol. 58, pp. 544-554, Feb. 2011. https://doi.org/10.1109/TIE.2010.2046002
  12. Sony Corp., www.sony.net/sonyinfo/news/press/200910/.
  13. Y. H. Kim, S.Y. Kang, S. H. Cheon, M. L. Lee, J. M. Lee, and T. Y. Zyung, "Optimization of wireless power transmission through resonant coupling," International Symposium on Power Electronics Electrical Drivers, Automation and Motion (SPEEDAM), pp. 1069-1073, 2010.
  14. S. H. Lee and R. D. Lorenz, "Development and validation of model for 95% efficiency, 220 W wireless power transfer over a 30 cm air-gap," in IEEE Energy Conversion Congress and Exposition (ECCE), pp. 885-892, Sep. 2010.
  15. C. T. Rim and G. H. Cho, "Phasor transformation and its application to the DC/AC analyses of frequency/phase controlled series resonant converters (SRC)," IEEE Trans. ower Electron., Vol. 5, No. 2, pp. 201-211, Apr. 1990. https://doi.org/10.1109/63.53157
  16. C. T. Rim, D. Y. Hu, and G. H. Cho, "Transformers as equivalent circuits for switches: General proofs and D-Q transformation-based analysis," IEEE Trans. Ind. Applicat., pp. 777-785, Jul./Aug. 1990.
  17. C. T. Rim, "Unified general phasor transformation for ac converters," IEEE Trans. Power Electron., Vol. 26, No. 9, pp. 2465-2475, Sep. 2011. https://doi.org/10.1109/TPEL.2011.2107920

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