Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Constant current/voltage characteristics inductive power transfer system with variable static S-T/FC compensation

  • Jianfeng Hong (School of Mechanical and Automotive Engineering, Xiamen University of Technology) ;
  • Fei Pan (School of Mechanical and Automotive Engineering, Xiamen University of Technology) ;
  • Ziheng Zhang (School of Mechanical and Automotive Engineering, Xiamen University of Technology) ;
  • Jia Teng (School of Mechanical and Automotive Engineering, Xiamen University of Technology) ;
  • Dekai He (School of Mechanical and Automotive Engineering, Xiamen University of Technology)
  • Received : 2023.06.23
  • Accepted : 2023.11.20
  • Published : 2024.03.20
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Abstract

Continuous mode changes during battery charging present a significant challenge for the application of inductive power transfer (IPT) in battery charging. Achieving constant-current (CC) and constant-voltage (CV) charging characteristics is crucial for its successful implementation. This paper proposes a variable static S-T/FC compensation topology based on switching state changes. It offers the advantages of being able to handle various load conditions, facilitating soft switching of the inverter throughout the operation process, and achieving CC and CV charging without changing the operating frequency of the system. The characteristics of the proposed topology were confirmed through a theoretical analysis. Additionally, a completely new parameter design method is proposed. The CC and CV characteristics of the proposed topology are verified through theoretical derivation and simulation analysis. Finally, a validation prototype is constructed to assess the feasibility and rationality of the proposed method, achieving a 3.5 A output current in the CC mode and a 70 V output voltage in the CV mode.

Keywords

Acknowledgement

This research was funded by the Natural Science Foundation of Fujian, grant number 2021J05262; Science and Technology Support Plan of Fujian, grant number 2022T3061; High-level Talent Program of Xiamen University of Technology, grant number YKJ20015R; and The Education Research Project for Mid-career Teachers of Fujian Provincial Education Department, grant number JAT200462.

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