Compact Wireless Power Transfer With Enhanced Misalignment Tolerance via Independent Secondary PWM Control

IF 6.5 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Electronics Pub Date : 2025-03-16 DOI:10.1109/TPEL.2025.3570846

Xingpeng Yu;Ronghuan Xie;Yixian Tu;Yizhan Zhuang;Xiangpeng Cheng;Fanghui Yin;Yiming Zhang

引用次数: 0

Abstract

Improving power density and system integration is a pivotal focus for wireless power transfer (WPT) in portable devices. However, challenges, such as misalignment tolerance and power fluctuation persist. This letter introduces a robust solution utilizing secondary independent PWM control. A coil structure combining solenoids and reverse windings ensures passive misalignment tolerance, while a grooved magnetic core integrates the converter, optimizing compactness. In addition, the secondary PWM control achieves precise output voltage regulation without communication. A high-power-density WPT prototype validates the proposed coupler and control method, demonstrating less than 1% output voltage fluctuation under a 50% misalignment and maintaining over 89% efficiency at 100 W. The secondary device is highly compact, measuring only 60 mm × 30 mm × 7.5 mm and achieving power density of 7.41 W/cm³.

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通过独立的二次PWM控制，增强了误差容错性的紧凑无线电力传输

提高功率密度和系统集成度是实现便携式无线电力传输（WPT）的关键。然而，诸如容差和功率波动等挑战仍然存在。本文介绍了一种利用二次独立PWM控制的鲁棒解决方案。结合螺线管和反向绕组的线圈结构确保了被动错位容忍度，而沟槽磁芯集成了转换器，优化了紧凑性。此外，二次PWM控制无需通信即可实现精确的输出电压调节。高功率密度WPT原型验证了所提出的耦合器和控制方法，在50%的偏差下，输出电压波动小于1%，在100 W时保持89%以上的效率。二次器件高度紧凑，尺寸仅为60mm × 30mm × 7.5 mm，功率密度为7.41 W/cm3。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.