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A Design Method for Magnetically Coupled Resonant Coils Considering Transmission Objectives and Dimension Constraints

Author

Listed:
  • Jingang Wang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Chen Shen

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Pengcheng Zhao

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Shucheng Ou

    (Baotou Power Supply Bureau of Inner Mongolia Electric Power Group Co., Ltd, Inner Mongolia Autonomous Region, Baotou 014000, China)

  • Zhi Xu

    (China Southern Power Grid Yunnan Electric Power Research Institute, Yunnan Province, Kunming 650217, China)

  • Ruiqiang Zhang

    (Baotou Power Supply Bureau of Inner Mongolia Electric Power Group Co., Ltd, Inner Mongolia Autonomous Region, Baotou 014000, China)

  • Zhiming Song

    (Baotou Power Supply Bureau of Inner Mongolia Electric Power Group Co., Ltd, Inner Mongolia Autonomous Region, Baotou 014000, China)

Abstract

This paper proposes a coil design method for the magnetically coupled resonant wireless power transfer (MCR-WPT) system. Based on the Biot–Savart law, the magnetic flux density at the observation point was derived, and the magnetic flux of the observation plane generated by the exciting coil was deduced to build the calculation model of power transfer efficiency (PTE) and power delivered to the load (PDL). The PTE and PDL curves via coil parameters could be fitted in minutes using numerical calculation. The coil was designed according to transmission objectives and dimension constraints. In addition, the calculated PTE and PDL were compared with those from finite element analysis to verify the credibility of the method. Finally, the actual curves of PTE and PDL were achieved, which showed a strong positive correlation with the corresponding curves from the calculation model. The relative average deviations of PDL curves were less than 6.11%. Meanwhile, coils designed with the numerical calculation could realize 309.80 W and 88.51%, which achieved the objectives under the constraints. The results demonstrate that the proposed method can realize a rapid and accurate coil design under constraints. It can also be applied to other coil structures or circuit topologies with strong universality.

Suggested Citation

  • Jingang Wang & Chen Shen & Pengcheng Zhao & Shucheng Ou & Zhi Xu & Ruiqiang Zhang & Zhiming Song, 2020. "A Design Method for Magnetically Coupled Resonant Coils Considering Transmission Objectives and Dimension Constraints," Energies, MDPI, vol. 13(16), pages 1-15, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:16:p:4144-:d:397506
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    References listed on IDEAS

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    1. Sun, Longzhao & Ma, Dianguang & Tang, Houjun, 2018. "A review of recent trends in wireless power transfer technology and its applications in electric vehicle wireless charging," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 490-503.
    2. Xu Liu & Chenyang Xia & Xibo Yuan, 2018. "Study of the Circular Flat Spiral Coil Structure Effect on Wireless Power Transfer System Performance," Energies, MDPI, vol. 11(11), pages 1-21, October.
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