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Research on Synchronous Phase Shift Control Strategy of Bilateral Converter in Bidirectional Inductive Power Transfer System

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Abstract

It is the key to realize the precise control of power transfer direction and energy to ensure the synchronous phase shift of the bilateral converters in bidirectional inductive power transfer (BD-IPT) system. In order to solve the problem that wireless communication is adopted in bidirectional inductive power transfer system, and the delay caused by the power oscillation affects power transfer. A method for synchronizing the control signals of the bilateral converters that track the extreme value of the output DC current is proposed in this paper, and dual phase-shift control is adopted to make the system efficient when it operates in a wide output power range. First, the power and efficiency characteristics of the BD-IPT system are analyzed in the paper. Next, a method to track the extreme value of the output DC current is designed for synchronization. Then, in order to ensure that the system maintains high-efficiency operation in a wide power range, a bilateral phase shift control is proposed. Finally, the validity of the scheme is verified through simulation and experiment.

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Acknowledgements

This work was supported by the Science and Technology Project of State Grid Corporation of China “Research on wireless charging technology of underwater cable inspection robot based on new magnetic device”.

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Authors and Affiliations

  1. Electrical Engineering and New Material Department, China Electric Power Research Institute, Beijing, 100192, China

    Songcen Wang & Cheng Jiang

  2. School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou, 221116, China

    Qiang Lu, Chenyang Xia & Nan Wei

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  1. Songcen Wang
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  2. Cheng Jiang
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  3. Qiang Lu
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  4. Chenyang Xia
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  5. Nan Wei
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Correspondence to Chenyang Xia.

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Wang, S., Jiang, C., Lu, Q. et al. Research on Synchronous Phase Shift Control Strategy of Bilateral Converter in Bidirectional Inductive Power Transfer System. J. Electr. Eng. Technol. 16, 2485–2495 (2021). https://doi.org/10.1007/s42835-021-00800-x

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  • DOI: https://doi.org/10.1007/s42835-021-00800-x

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