Improving Misalignment Tolerance for IPT System Using a Third-Coil
Improving Misalignment Tolerance for IPT System Using a Third-Coil
复制标题
使用第三线圈提高 IPT 系统的不对中容差
DOI：
10.1109/tpel.2018.2867919
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发表时间：
2019-04-01
影响因子：
6.7
通讯作者：
He, Zhengyou
中科院分区：
文献类型：
--
作者：
Chen, Yang;Mai, Ruikun;He, Zhengyou
为了提高感应电能传输（IPT）系统的不对中容差，采用第三个线圈与松耦合变压器（LCT）的初级线圈反向串联。带第三线圈的LCT（LCT-TC）不仅可以改善x和y方向的不对中性能，而且不会影响原始补偿拓扑的固有输出特性（例如恒流或电压输出）。此外，所提出的方法可以保持 IPT 系统以相对较高的效率运行，防止失准。然后，提出了LCT-TC的详细设计方法。最后，选择双面LCC补偿IPT系统作为例子来验证所提出的LCT-TC的可行性。搭建了3.4kW样机，实验结果表明该方法具有良好的失准性能。具有 LCT-TC 的 LCC-LCC IPT 系统可以在 40% 失准时保留 96% 的良好对准功率，并且端到端 (dc-dc) 整体系统效率至少为 92%。此外，当负载在 15 至 34 Ω 之间变化且偏差在 40% 范围内时，输出电流的波动为 [–2%, 5%]。
To improve misalignment tolerance for an inductive power transfer (IPT) system, a third-coil is employed to reversely connect with the primary coil of the loosely coupled transformer (LCT) in series. The LCT with a third-coil (LCT-TC) not only can improve the misalignment performance in x- and y-directions, but also does not affect the inherent output characteristics (such as constant current or voltage output) of original compensation topologies. In addition, the proposed approach can keep the IPT system operating with relatively high efficiency against misalignment. Then, a detailed design method of LCT-TC is presented. Finally, a double-side LCC-compensated IPT system is chosen as an example to verify the feasibility of proposed LCT-TC. A 3.4-kW prototype is constructed, and experimental results show that the proposed method has a good misalignment performance. The LCC-LCC IPT system with LCT-TC can retain 96% of the well-aligned power at 40% misalignment, and the end-to-end (dc–dc) overall system efficiency is at least 92%. Besides, the fluctuation of the output current is [–2%, 5%] while the load varies from 15 to 34 Ω within 40% misalignment.