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An Optimal Variable-Frequency Asymmetrical-Phase-Shift Strategy for Wireless Power Transfer System
ID：509 View Protection：ATTENDEE Updated Time：2022-05-21 23:47:02 Hits：323 Poster Presentation

Start Time：Pending（Asia/Shanghai）

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Abstract
In wireless power transfer (WPT) systems, the transfer efficiency will be significantly affected by coils misalignment or power variation by traditional control strategy. In this paper, a variable-frequency asymmetrical-phase-shift (VFAPS) control strategy is proposed, which simultaneously controls the system frequency and phase shift angles to regulate the transmission power with maximum transmission efficiency regardless of coils misalignment or power variation. System frequency is controlled to compensate the reactive component of the secondary circuit. Asymmetrical-phase-shift can reduce reactive power loss and narrow the regulation range of system frequency on the basis of a wide range of ZVS. Finally, a mathematical model for solving the optimal control variables is established. Contrast experiments with the traditional triple-phase-shift (TPS) strategy on a 3.7kW WPT platform are constructed to verify the effectiveness of proposed strategy. The results demonstrate VFAPS strategy enables the system to operate at maximum efficiency and has great advantages in resisting coils misalignment and power variations.
Keywords
wireless power transfer;transmission efficiency;coils misalignment;power variations;ZVS;variable-frequency asymmetrical-phase-shift
Speaker
ChenHaowen
student School of Electrical and Electronic Engineering , Huazhong University of Science and Technology

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Important Date

  • Conference Date

    May 27

    2022

    to

    May 29

    2022

  • Feb 28 2022

    Draft paper submission deadline

  • May 29 2022

    Registration deadline

  • Jun 22 2022

    Contribution Submission Deadline

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IEEE Beijing Section
China Electrotechnical Society
Southeast University
Supported By
IEEE Industry Applications Society
IEEE Nanjing Section
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