A Series-Parallel Inverter-Based WPT System for Electric Vehicles With Different Input Voltages and Z Classes

IF 6.5 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Power Electronics Pub Date : 2025-02-13 DOI:10.1109/TPEL.2025.3535675

Anbing Lai;Dehong Zhou;Fangli Li;Zewei Shen;Jianxiao Zou;Xin Liu

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Abstract

Different countries have various grid voltages, and different electric vehicles (EVs) have different chassis heights. Conventional EV wireless power transfer (WPT) solutions require designing different circuits for various input voltages and using different compensation circuits for different transmission distance classes, which hinders the widespread adoption of the WPT technology. To address these two issues, this article proposes an EV WPT system based on series-parallel inverters. The mathematical model of this system is established, and the expression for output power is derived. In addition, current and voltage-sharing characteristics and system losses are analyzed. The design procedure is then summarized to provide a reference for higher power WPT systems. The proposed system offers adaptability to different grid voltages and Z classes without requiring changes to the resonant circuit or the addition of dc–dc converters. And it eliminates the need for a resonant inductor on the ground assembly side, making it a cost-effective solution. Finally, a 3-kW prototype is constructed to demonstrate the feasibility of this proposed system and the maximum overall efficiency achieved is 92%.

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基于串并联逆变器的不同输入电压和Z级电动汽车WPT系统

不同的国家有不同的电网电压，不同的电动汽车有不同的底盘高度。传统的电动汽车无线电力传输（WPT）解决方案需要针对不同的输入电压设计不同的电路，并针对不同的传输距离类别使用不同的补偿电路，这阻碍了WPT技术的广泛采用。为了解决这两个问题，本文提出了一种基于串并联逆变器的电动汽车WPT系统。建立了该系统的数学模型，推导了输出功率的表达式。此外，还分析了电流、电压共享特性和系统损耗。总结了该系统的设计过程，为大功率WPT系统的设计提供参考。所提出的系统在不需要改变谐振电路或增加dc-dc转换器的情况下，具有对不同电网电压和Z级的适应性。它消除了对地面组装侧谐振电感的需要，使其成为一种经济高效的解决方案。最后，构建了一个3千瓦的原型来证明该系统的可行性，最大总效率达到92%。

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来源期刊

IEEE Transactions on Power Electronics 工程技术-工程：电子与电气

CiteScore

15.20

自引率

20.90%

发文量

1099

审稿时长

3 months

期刊介绍： The IEEE Transactions on Power Electronics journal covers all issues of widespread or generic interest to engineers who work in the field of power electronics. The Journal editors will enforce standards and a review policy equivalent to the IEEE Transactions, and only papers of high technical quality will be accepted. Papers which treat new and novel device, circuit or system issues which are of generic interest to power electronics engineers are published. Papers which are not within the scope of this Journal will be forwarded to the appropriate IEEE Journal or Transactions editors. Examples of papers which would be more appropriately published in other Journals or Transactions include: 1) Papers describing semiconductor or electron device physics. These papers would be more appropriate for the IEEE Transactions on Electron Devices. 2) Papers describing applications in specific areas: e.g., industry, instrumentation, utility power systems, aerospace, industrial electronics, etc. These papers would be more appropriate for the Transactions of the Society which is concerned with these applications. 3) Papers describing magnetic materials and magnetic device physics. These papers would be more appropriate for the IEEE Transactions on Magnetics. 4) Papers on machine theory. These papers would be more appropriate for the IEEE Transactions on Power Systems. While original papers of significant technical content will comprise the major portion of the Journal, tutorial papers and papers of historical value are also reviewed for publication.