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Optimal Efficiency Tracking Control Scheme Based on Power Stabilization for a Wireless Power Transfer System with Multiple Receivers

Author

Listed:
  • Yang Li

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Kai Song

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Zhenjie Li

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Jinhai Jiang

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Chunbo Zhu

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China)

Abstract

With the increase of charging requirements in electrical equipment, the wireless power transfer (WPT) system with multiple receivers has gained more attention as the charging power and efficiency of a WPT system depends on the equivalent reflected impedance of the load. Based on the circuit model analysis of a single receiver WPT system, this paper investigated the multiple-receiver WPT system. The relationship between the mutual inductance, load, and system efficiency was discussed and the optimal load, the equivalent reflected impedance, and power division method were analyzed to design the proposed system control scheme. With the use of the perturbation and observation (P&O) algorithm control method, the current of transfer and receivers were regulated to achieve stable constant power charging. Furthermore, when searching the minimum input power of the system, the optimal efficiency under a fixed power division ratio was also received. The validity of the proposed system control method was confirmed by simulation and experimental results. Under the proposed control method, an efficiency above 80% can be achieved for a multiple-receiver WPT system with a fixed power division ratio working at 6.78 MHz.

Suggested Citation

  • Yang Li & Kai Song & Zhenjie Li & Jinhai Jiang & Chunbo Zhu, 2018. "Optimal Efficiency Tracking Control Scheme Based on Power Stabilization for a Wireless Power Transfer System with Multiple Receivers," Energies, MDPI, vol. 11(5), pages 1-18, May.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1232-:d:145967
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    Citations

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    Cited by:

    1. Giuseppina Monti & Mauro Mongiardo & Ben Minnaert & Alessandra Costanzo & Luciano Tarricone, 2021. "Multiple Input Multiple Output Resonant Inductive WPT Link: Optimal Terminations for Efficiency Maximization," Energies, MDPI, vol. 14(8), pages 1-25, April.
    2. Zhipeng Guan & Bo Zhang & Dongyuan Qiu, 2019. "Influence of Asymmetric Coil Parameters on the Output Power Characteristics of Wireless Power Transfer Systems and Their Applications," Energies, MDPI, vol. 12(7), pages 1-19, March.
    3. Jacek Maciej Stankiewicz & Agnieszka Choroszucho & Adam Steckiewicz, 2021. "Estimation of the Maximum Efficiency and the Load Power in the Periodic WPT Systems Using Numerical and Circuit Models," Energies, MDPI, vol. 14(4), pages 1-20, February.

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