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Transfer characteristics analysis of bilayer coil structures for wireless power transfer systems

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Abstract

Although bilayer coil structures can satisfy the application requirements for inductively coupled power transfer (ICPT) systems in practice, the transfer characteristics of systems (e.g., transfer power, transfer efficiency, and misalignment tolerance) under external interference are seldom studied. In this paper, an equivalent model of a wireless power transfer (WPT) system with a bilayer coils structure was established, and the influences of coil structures on transfer power and efficiency were analyzed. Then, the bilayer coil structures were modeled through multi-physics simulations, the applicable range was determined, and the influences of the coil structures on the transfer performance were studied in detail. Finally, an experiment prototype was set up, and experimental results showed that the coupling coil structures has an obvious effect on the transfer performance. The research in this paper is beneficial for the operation safety and reliability of WPT systems.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China under Grant [number 51877151], [number 51577133]; [number 51677132], and Program for Innovative Research Team in University of Tianjin under Grant [number TD13-5040].

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Authors and Affiliations

  1. School of Electrical Engineering and Automation, Tiangong University, Tianjin, China

    Yang Li, Jing-nan Ma, Shao-bo Shi, Yue-peng Huang, Rui Wang, Jia-ming Liu & Xin Ni

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  1. Yang Li
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  2. Jing-nan Ma
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Correspondence to Jing-nan Ma.

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Li, Y., Ma, Jn., Shi, Sb. et al. Transfer characteristics analysis of bilayer coil structures for wireless power transfer systems. J. Power Electron. 21, 840–851 (2021). https://doi.org/10.1007/s43236-021-00231-x

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  • DOI: https://doi.org/10.1007/s43236-021-00231-x

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