Extended Hybrid Modulation for Multistage Constant-Current Wireless EV Charging

IF 6.6 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Electronics Pub Date : 2025-03-11 DOI:10.1109/TPEL.2025.3549840

Gangwei Zhu;Shibo Zhang;Zichen Deng;Jundong Wang;Yongpeng Li;Jianning Dong;Pavol Bauer

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引用次数: 0

Abstract

This article presents an extended hybrid modulation (EHM) technique to achieve multistage constant-current (MSCC) charging of electric vehicles using wireless power transfer (WPT) technology. Although most research focuses on constant-current constant-voltage charging, MSCC charging offers key advantages, such as lower temperature rise, decreased charging time, and prolonged battery lifespan. However, the existing phase-shift-modulation (PSM) method encounters substantial circulating reactive power and significant efficiency drops in MSCC charging. To overcome this, an EHM strategy is proposed to expand the modulation range of PSM. By applying EHM to both the inverter and active rectifier, the proposed method provides up to 16 operating modes to facilitate multiple CC outputs. Furthermore, an optimal mode trajectory, specifically designed for the MSCC charging, is developed. By implementing this trajectory across different charging stages, zero-voltage-switching is achieved for all power switches, and the overall power loss of the system is minimized. Finally, a WPT prototype was developed to validate the proposed approach. Experimental results demonstrate that the proposed approach effectively enables the MSCC charging while notably enhancing transmission efficiency, achieving dc-to-dc efficiencies between 92.45% and 95.67% across a power range of 231 to 3.015 kW.

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多级恒流无线充电的扩展混合调制

本文提出了一种扩展的混合调制（EHM）技术，利用无线电力传输（WPT）技术实现电动汽车的多级恒流充电。尽管大多数研究都集中在恒流恒压充电上，但MSCC充电具有较低的温升、较短的充电时间和较长的电池寿命等关键优势。然而，现有的相移调制（PSM）方法在MSCC充电时遇到了大量的循环无功功率和显著的效率下降。为了克服这一问题，提出了一种扩展PSM调制范围的EHM策略。通过将EHM应用于逆变器和有源整流器，所提出的方法提供多达16种工作模式，以方便多个CC输出。在此基础上，提出了一种针对MSCC充电的最优模式轨迹。通过在不同的充电阶段实现这一轨迹，实现了所有电源开关的零电压切换，并将系统的总体功率损失降至最低。最后，开发了一个WPT原型来验证所提出的方法。实验结果表明，该方法有效地实现了MSCC充电，同时显著提高了传输效率，在231 ~ 3.015 kW的功率范围内实现了92.45% ~ 95.67%的直流效率。

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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.