Misalignment‐tolerant coupling cell of 2‐D modular WPT system for charging area simplified extension

IF 1.8 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Circuit Theory and Applications Pub Date : 2024-08-26 DOI:10.1002/cta.4251

Xi Wu, Changsong Cai, Jianwei Shao, Junhua Wang, Leke Wan, Yinfeng Du, Qiye Zhang, Yufeng Jiang

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引用次数: 0

Abstract

2‐D modular wireless power transfer (WPT) system needs to have stable output when coil misalignment occurs. In order to improve the misalignment tolerance of the system coupling unit, this article proposes a magnetic coupling structure based on the LCC‐S compensation topology by combining a rectangular coil with two sets of mutually orthogonal solenoidal compensation coils. The rectangular coil is used to receive the vertical magnetic flux, and the two sets of compensating coils are used to receive the magnetic flux in the directions of X‐axis and Y‐axis on the horizontal plane, separately. The receiving side of the 2‐D wireless power transmission array cells cascaded half‐bridge rectifiers to connect each group of coils. This arrangement effectively compensates for the voltage drop of the rectangular coil caused by positional offset in any direction, so that the output voltage of the receiving side remains stable. The article firstly establishes the equivalent circuit model of the proposed design and deduces in detail the relationship equations between the output characteristics of the system and each influence factor. Secondly, the magnetic coupling structure is designed by finite element electromagnetic simulation software, and the total equivalent mutual inductance fluctuation of the proposed design is verified to be within 3.9% over the range of 2‐D transmission array cells. Finally, a 150 W experimental platform is built to verify the misaligment‐tolerant of the proposed design in the range of 2‐D transmission array cells. The experimental results show that the output voltage fluctuation of the proposed design within 4.27% at all directional offsets. Moreover, the stable output performance can be obtained in the case of vertical and rotational misalignment.

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用于充电区域简化扩展的二维模块化 WPT 系统的容错耦合单元

二维模块化无线电力传输（WPT）系统需要在线圈发生错位时有稳定的输出。为了提高系统耦合单元的错位容限，本文提出了一种基于 LCC-S 补偿拓扑结构的磁耦合结构，它将一个矩形线圈与两组相互正交的螺线管补偿线圈组合在一起。矩形线圈用于接收垂直方向的磁通量，两组补偿线圈分别用于接收水平面 X 轴和 Y 轴方向的磁通量。二维无线输电阵列的接收端采用级联半桥整流器连接每组线圈。这种布置方式有效地补偿了矩形线圈在任意方向上因位置偏移而产生的压降，从而使接收端的输出电压保持稳定。文章首先建立了拟议设计的等效电路模型，并详细推导了系统输出特性与各影响因素之间的关系式。其次，利用有限元电磁仿真软件设计了磁耦合结构，并验证了所提设计在二维传输阵列单元范围内的总等效互感波动在 3.9% 以内。最后，建立了一个 150 W 的实验平台，以验证所提设计在二维透射阵列单元范围内的误配容限。实验结果表明，在所有方向偏移情况下，拟议设计的输出电压波动都在 4.27% 以内。此外，在垂直和旋转偏移的情况下，也能获得稳定的输出性能。

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

International Journal of Circuit Theory and Applications 工程技术-工程：电子与电气

CiteScore

3.60

自引率

34.80%

发文量

277

审稿时长

4.5 months

期刊介绍： The scope of the Journal comprises all aspects of the theory and design of analog and digital circuits together with the application of the ideas and techniques of circuit theory in other fields of science and engineering. Examples of the areas covered include: Fundamental Circuit Theory together with its mathematical and computational aspects; Circuit modeling of devices; Synthesis and design of filters and active circuits; Neural networks; Nonlinear and chaotic circuits; Signal processing and VLSI; Distributed, switched and digital circuits; Power electronics; Solid state devices. Contributions to CAD and simulation are welcome.