Design and Optimization of a Planar Omnidirectional Wireless Power Transfer System for Consumer Electronics

IF 5 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE open journal of power electronics Pub Date : 2024-01-31 DOI:10.1109/OJPEL.2024.3360878

Xipei Yu;Junjie Feng;Liyan Zhu;Qiang Li

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Abstract

Recently, omnidirectional wireless power transfer (WPT) has gained increasing popularity due to its capability to charge in arbitrary positions and directions. However, existing solutions still face several challenges, including coupled coils, non-optimized structure, non-uniform magnetic field, and poor misalignment tolerance. This work proposes an omnidirectional WPT system with three fully decoupled coils consisting of one square coil and two perpendicular DD coils. Comprehensive modeling and Pareto optimization for the transmitter coil structure are conducted for improved tolerance to both lateral and angular misalignment. Experimental results are provided to validate the system performance in terms of the output voltage and efficiency under different lateral and angular misalignments. With a 12 V input, the efficiency of the system exhibits a <10% variation, ranging from 69% to 78%, with 50 mm misalignment in the x and y axes and a 90-degree angular misalignment. At the same time, the output voltage remains within the range of 11.5 V to 14.5 V.

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设计和优化用于消费电子产品的平面全向无线电力传输系统

最近，全向无线电力传输（WPT）因其能够在任意位置和方向充电而越来越受欢迎。然而，现有的解决方案仍然面临着一些挑战，包括耦合线圈、非优化结构、不均匀磁场和较差的错位容差。这项研究提出了一种全向 WPT 系统，该系统由三个完全解耦的线圈组成，其中包括一个方形线圈和两个垂直的 DD 线圈。对发射器线圈结构进行了全面建模和帕累托优化，以提高对横向和角度偏差的耐受性。实验结果验证了系统在不同横向和角度偏差下的输出电压和效率性能。在 12 V 输入电压下，系统的效率变化小于 10%，在 x 轴和 y 轴错位 50 mm 和角度错位 90 度的情况下，效率在 69% 至 78% 之间。同时，输出电压保持在 11.5 V 至 14.5 V 的范围内。

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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