The multitransmitter and multireceiver structure has been extensively discussed in dynamic inductive wireless charging (DIWC) systems for electric vehicles (EVs). Multiple coils have already been proven successful in high-power applications. Nevertheless, challenges persist in mitigating the adverse effects of cross-coupling among adjacent multicoils and in achieving higher transfer efficiency and stable output power under dynamic conditions. Thus, this article proposes a new DIWC magnetic coupler composed of a cross-overlapped transmitter and single receiver that serves multiple purposes, including decoupling, reduced mutual inductance fluctuation, and achieving high efficiency simultaneously. Moreover, the traversal method using the finite element analysis (FEA) tool Maxwell is used to choose the optimized Rx coil turns and size, thereby further improving system performance. A 2kW laboratory prototype is developed to validate the proposed DIWC magnetic coupler. The experimental results show that the output voltage fluctuation can be controlled within 61% and the maximum DC-DC efficiency is 92.87%. The longitudinal misalignment performance of the proposed DIWC magnetic coupler is also elaborated in this article.

中文翻译：

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一种用于电动汽车动态感应无线充电系统的新型交叉重叠去耦线圈结构


电动汽车 (EV) 的动态感应无线充电 (DIWC) 系统中已广泛讨论了多发射器和多接收器结构。多个线圈已在高功率应用中被证明是成功的。然而，在减轻相邻多线圈之间交叉耦合的不利影响以及在动态条件下实现更高的传输效率和稳定的输出功率方面仍然存在挑战。因此，本文提出了一种新型 DIWC 磁耦合器，由交叉重叠的发射器和单个接收器组成，具有多种用途，包括去耦、减少互感波动并同时实现高效率。此外，利用有限元分析（FEA）工具Maxwell的遍历方法来选择优化的Rx线圈匝数和尺寸，从而进一步提高系统性能。开发了 2kW 实验室原型来验证所提出的 DIWC 磁耦合器。实验结果表明，输出电压波动可控制在61%以内，最大DC-DC效率为92.87%。本文还详细阐述了所提出的 DIWC 磁耦合器的纵向不对中性能。