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Middle range wireless power transfer systems with multiple resonators

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Abstract

The equivalent two-port network model of a middle range wireless power transfer (WPT) system was presented based on strongly coupled multiple resonators. The key parameters of the WPT system include self-inductance, resistance, parasitic capacitance, mutual inductance and S-parameters of coils & resonators were analyzed. The impedance matching method was used to optimize load power and transmission efficiency of the multi-resonator WPT system, and the impedance matching method was realized through adjusting the distances between the coils and resonators. Experiments show that the impedance matching method can effectively improve load power and transmission efficiency for middle range wireless power transfer systems with multiple resonators, at distances up to 3 times the coil radius with efficiency more than 70% and load power also close to 3.5 W.

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References

  1. KURS A, KARALIS A, MOFFATT R, JOANNOPOULOS J D, FISHER P, SOLJACIC M. Wireless power transfer via strongly coupled magnetic resonances [J]. Science, 2007, 317(5834): 83–86.

    Article  MathSciNet  Google Scholar 

  2. WANG Jun-hua, HO S L, FU Wei-nong, CHEUNG T K, SUN Min-gui. Finite-element analysis and corresponding experiments of resonant energy transfer for wireless transmission devices [J]. IEEE Transactions on Magnetics, 2011, 47(5): 1074–1077.

    Article  Google Scholar 

  3. HO S L, WANG J H, FU W N, SUN M G. A comparative study between novel Witricity and traditional inductive magnetic coupling in wireless charging [J]. IEEE Transactions on Magnetics, 2011, 47(5): 1522–1525.

    Article  Google Scholar 

  4. ZHANG Xiu, HO S L, FU W N. Analysis and optimization of magnetically coupled resonators for wireless power transfer [J]. IEEE Transactions on Magnetics, 2012, 48(11): 4511–4514.

    Article  Google Scholar 

  5. WANG J H, HO S L, FU W N, SUN M G. Analytical design study of a novel Witricity charger with lateral and angular misalignments for efficient wireless energy transmission [J]. IEEE Transactions on Magnetics, 2011, 47(10): 2616- 2619.

    Google Scholar 

  6. ZHONG W X, LEE C K, HUI S Y R. General analysis on the use of Tesla’s resonators in domino forms for wireless power transfer [J]. IEEE Transactions on Industrial Electronics, 2013, 60(1): 261–270.

    Article  Google Scholar 

  7. SAMPLE A P, MEYER D A, SMITH J R. Analysis, experimental results, and range adaptation of magnetically coupled resonators for wireless power transfer [J]. IEEE Transactions on Industrial Electronics, 2011, 58(2): 544–554.

    Article  Google Scholar 

  8. LEE C K, ZHONG W X, HUI S Y R. Effects of magnetic coupling of nonadjacent resonators on wireless power domino-resonator systems [J]. IEEE Transactions on Power Electronics, 2012, 27(4): 1905–1916.

    Article  Google Scholar 

  9. CHEN C J, CHU T H, LIN C L, JOU Z C. A study of loosely coupled coils for wireless power transfer [J]. IEEE Transactions on Circuits and Systems II: Express Briefs, 2010, 57(7): 536–540.

    Article  Google Scholar 

  10. ZHANG X, HO S L, FU W N. Quantitative design and analysis of relay resonators in wireless power transfer system [J]. IEEE Transactions on Magnetics, 2012, 48(11): 4026–4029.

    Article  Google Scholar 

  11. MASSARINI A, KAZIMIERCZUK M K. Self-capacitance of inductors [J]. IEEE Transactions on Power Electronics, 1997, 12(4): 671–676.

    Article  Google Scholar 

  12. PACURAR C, TOPA V, RACASAN A, MUNTEANU C. Inductance calculation and layout optimization for planar spiral inductors [C]// 13th International Conference on Optimization of Electrical and Electronic Equipment (snOPTIM). Brasov, 2012: 225–232.

    Google Scholar 

  13. MOHAN S S, MARIA D M H, BOYD S P, LEE T H. Simple accurate expressions for planar spiral inductances [J]. IEEE Journal of Solid-State Circuits, 1999, 34(10): 1419–1424.

    Article  Google Scholar 

  14. JOW U M, GHOVANLOO M. Design and optimization of printed spiral coils for efficient transcutaneous inductive power transmission [J]. IEEE Transactions on Biomedical Circuits and Systems, 2007, 1(3): 193–202.

    Article  Google Scholar 

  15. RAJU S, WU Rong-xiang, CHAN M, YUE C P. Modeling of mutual coupling between planar inductors in wireless power applications [J]. IEEE Transactions on Power Electronics, 2014, 29(1): 481–490.

    Article  MathSciNet  Google Scholar 

  16. IMURA T, HORI Y. Maximizing air gap and efficiency of magnetic resonant coupling for wireless power transfer using equivalent circuit and Neumann formula [J]. IEEE Transactions on Industrial Electronics, 2011, 58(10): 4746–4752.

    Article  Google Scholar 

  17. BEH T C, KATO M, IMURA T, SEHOON O, HORI Y. Automated impedance matching system for robust wireless power transfer via magnetic resonance coupling [J]. IEEE Transactions on Industrial Electronics, 2013, 60(9): 3689–3698.

    Article  Google Scholar 

  18. HUI S Y R, ZHONG W X, LEE C K. A critical review of recent progress in mid-range wireless power transfer [J]. IEEE Transactions on Power Electronics, 2014, 60(9): 4500–4511.

    Article  Google Scholar 

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Authors and Affiliations

  1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, 410082, China

    Xin Chen  (陈新) & Gui-xiang Zhang  (张桂香)

  2. Department of Energy and Electrical Engineering, Hunan University of Humanities, Science and Technology, Loudi, 417000, China

    Xin Chen  (陈新)

Authors
  1. Xin Chen  (陈新)
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  2. Gui-xiang Zhang  (张桂香)
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Corresponding author

Correspondence to Xin Chen  (陈新).

Additional information

Foundation item: Project(61104088) supported by the National Natural Science Foundation of China; Project(12C0741) supported by Scientific Research Fund of Hunan Provincial Education Department, China

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Chen, X., Zhang, Gx. Middle range wireless power transfer systems with multiple resonators. J. Cent. South Univ. 22, 2127–2136 (2015). https://doi.org/10.1007/s11771-015-2737-x

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  • DOI: https://doi.org/10.1007/s11771-015-2737-x

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