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A Power and Data Decoupled Transmission Method for Wireless Power Transfer Systems via a Shared Inductive Link

Author

Listed:
  • Xiaofei Li

    (School of Automation, Chongqing University, Chongqing 400044, China)

  • Haichao Wang

    (Chongqing Science and Technology Research Institute, Chongqing 401123, China)

  • Xin Dai

    (School of Automation, Chongqing University, Chongqing 400044, China
    State key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China)

Abstract

Wireless Power Transfer (WPT) technology is gaining global popularity. However, in some applications, data transmission is also required to monitor the load states. This paper presents an alternative wireless power and data transmission method via the shared inductive link. With the method, the system presents three characteristics: (1) controllability and stability of the output voltage; (2) miniaturization in volume of the system; (3) decoupled transmission of power and data. The output voltage control is realized by a non-inductive hysteresis control method. In particular, data is transferred when the power transmission is blocked (i.e., the hysteresis switch is off). The interference between power and data transmission is very small. The signal to noise ratio (SNR) performance which is relevant to the interference from power transfer to data transfer and data transfer capacity, is studied and optimized. Both simulation and experimental results have verified the proposed method.

Suggested Citation

  • Xiaofei Li & Haichao Wang & Xin Dai, 2018. "A Power and Data Decoupled Transmission Method for Wireless Power Transfer Systems via a Shared Inductive Link," Energies, MDPI, vol. 11(8), pages 1-14, August.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:8:p:2161-:d:164422
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    Cited by:

    1. Dongsheng Yang & Sokhui Won & Jiangwei Tian & Zixin Cheng & Jongho Kim, 2019. "A Method of Estimating Mutual Inductance and Load Resistance Using Harmonic Components in Wireless Power Transfer System," Energies, MDPI, vol. 12(14), pages 1-19, July.

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