A Compact Dual-Channel WPT System Based on Decoupled Integrated Coils for Power Enhancement

IF 4.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-07-22 DOI:10.1109/TCSII.2025.3591215

Jiawei Xie;Yandong Chen;Yuhang Zhou;Cong Luo;Jian Guo

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引用次数: 0

Abstract

The multi-coils configuration presents an effective approach for high-power wireless power transfer (WPT) systems. Among them, mitigating complex cross-coupling in magnetic couplers remains critical to achieving high efficiency and stable power delivery. Thus, this brief proposes a compact dual-channel WPT system with decoupled coils to enhance the overall power capacity. The transmitter and receiver have the same structure, with each charging pad constructed by solenoid coils wound around Q-coils and ferrite cores. Solenoid coils and Q-coils are naturally decoupled from each other, thereby eliminating additional coupling interference and only their main mutual inductance

$M_{1}$

$M_{2}$

are retained. Furthermore, the principle of power enhancement and constant current (CC) output is thoroughly analyzed, and a more generalized output model is derived. Finally, a 305 W experimental prototype was constructed, with results in agreement with theoretical analyses. Compared with the single-channel system, the output current (2.82 A) of the proposed system is amplified by (1+

$M_{1}$

${M} _{2}$

), with the peak efficiency reaching 90.5%, an improvement of about 6%.

查看原文本刊更多论文

基于解耦集成线圈的小型双通道WPT系统功率增强

多线圈结构为大功率无线功率传输（WPT）系统提供了一种有效的方法。其中，减轻磁耦合器中复杂的交叉耦合对于实现高效率和稳定的电力输送至关重要。因此，本文提出了一种紧凑的双通道WPT系统，该系统具有解耦线圈，以增强整体功率容量。发射器和接收器的结构相同，每个充电垫由螺线管线圈绕在q线圈和铁氧体铁芯上构成。螺线管线圈和q线圈彼此自然解耦，从而消除了额外的耦合干扰，仅保留其主互感电感$M_{1}$, $M_{2}$。在此基础上，深入分析了功率增强和恒流输出的原理，并推导出更广义的输出模型。最后，建立了305w的实验样机，实验结果与理论分析一致。与单通道系统相比，该系统的输出电流（2.82 A）放大了（1+ $M_{1}$ / ${M} _{2}$），峰值效率达到90.5%，提高了约6%。

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 Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.