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The Design and Optimization of a Wireless Power Transfer System Allowing Random Access for Multiple Loads

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  • Linlin Tan

    (School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
    Zhifang Engineering Design Co. Ltd., Nanjing 210014, China
    Key Laboratory of Smart Grid Technology and Equipment in Jiangsu Province, No. 2, Sipailou Street, Nanjing 210096, China)

  • Ming Zhang

    (School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
    Key Laboratory of Smart Grid Technology and Equipment in Jiangsu Province, No. 2, Sipailou Street, Nanjing 210096, China)

  • Songcen Wang

    (State Grid China Electric Power Research Institute, Beijing 100192, China)

  • Shulei Pan

    (State Grid Yancheng Power Supply Company, No. 189, Jiefang South Road, Yancheng 224000, China)

  • Zhenxing Zhang

    (School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
    Key Laboratory of Smart Grid Technology and Equipment in Jiangsu Province, No. 2, Sipailou Street, Nanjing 210096, China)

  • Jiacheng Li

    (School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
    Key Laboratory of Smart Grid Technology and Equipment in Jiangsu Province, No. 2, Sipailou Street, Nanjing 210096, China)

  • Xueliang Huang

    (School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
    Key Laboratory of Smart Grid Technology and Equipment in Jiangsu Province, No. 2, Sipailou Street, Nanjing 210096, China)

Abstract

As is common in multi-load wireless power transfer (WPT) systems based on series–series compensation topology, the power received by loads and the efficiency of the process are highly sensitive to changes in the number of loads. To guarantee that the power supplied to a load remains stable when other loads access or leave the system, we propose an improved multi-load system for WPT. The new system uses an LCC/S topology (based on inductor–capacitor–inductor or LCL topology) to keep the power received by the loads stable. By comparing two scenarios (ideal and real models based on LCC/S topology), we aim to eliminate cross-coupling between receiving coils by connecting compensating capacitors in series on the receiving side. In this way, the stability of the power received by loads is further improved. Moreover, a method of optimizing control over the efficiency is proposed based on the effect on the overall efficiency of impedance and number of loads. This allows us to optimize the overall efficiency of the system. Finally, a system to verify our theoretical analysis is established and used to show the validity and effectiveness of the proposed system.

Suggested Citation

  • Linlin Tan & Ming Zhang & Songcen Wang & Shulei Pan & Zhenxing Zhang & Jiacheng Li & Xueliang Huang, 2019. "The Design and Optimization of a Wireless Power Transfer System Allowing Random Access for Multiple Loads," Energies, MDPI, vol. 12(6), pages 1-19, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:6:p:1017-:d:214224
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    References listed on IDEAS

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    1. Linlin Tan & Jinpeng Guo & Xueliang Huang & Han Liu & Changxin Yan & Wei Wang, 2016. "Power Control Strategies of On-Road Charging for Electric Vehicles," Energies, MDPI, vol. 9(7), pages 1-14, July.
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    Cited by:

    1. Dong-Hun Woo & Hwa-Rang Cha & Rae-Young Kim, 2020. "Resonant Network Design Method to Reduce Influence of Mutual Inductance between Receivers in Multi-Output Omnidirectional Wireless Power Transfer Systems," Energies, MDPI, vol. 13(21), pages 1-15, October.
    2. Koen Bastiaens & Dave C. J. Krop & Elena A. Lomonova, 2022. "Spectral Element-Based Multi-Physical Modeling Framework for Axisymmetric Wireless Power Transfer Systems," Energies, MDPI, vol. 15(9), pages 1-30, April.
    3. Aqeel Mahmood Jawad & Rosdiadee Nordin & Haider Mahmood Jawad & Sadik Kamel Gharghan & Asma’ Abu-Samah & Mahmood Jawad Abu-Alshaeer & Nor Fadzilah Abdullah, 2022. "Wireless Drone Charging Station Using Class-E Power Amplifier in Vertical Alignment and Lateral Misalignment Conditions," Energies, MDPI, vol. 15(4), pages 1-29, February.

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