An Autonomous Coil Alignment System for the Dynamic Wireless Charging of Electric Vehicles to Minimize Lateral Misalignment
An Autonomous Coil Alignment System for the Dynamic Wireless Charging of Electric Vehicles to Minimize Lateral Misalignment
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DOI：
10.3390/en10030315
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发表时间：
2017-03-01
期刊：
影响因子：
3.2
通讯作者：
Ahn, Seungyoung
中科院分区：
文献类型：
--
作者：
Hwang, Karam;Cho, Jaeyong;Ahn, Seungyoung
本文提出了一种用于具有动态无线充电（DWC）的电动汽车（EV）的自主线圈对准系统（ACAS），以减轻由源线圈和负载线圈之间的横向不对准引起的接收功率的减少。ACAS的关键部件是一种新颖的传感器线圈设计，它可以通过观察电压相位的变化来检测负载线圈相对于源线圈的左或右位置。这允许仅通过无线功率传输（WPT）系统来估计横向未对准，这是用于车辆应用的新颖跟踪方法。一旦检测到未对准，车辆的横向位置将通过自主转向功能进行自我调整。通过仿真和实验验证了ACAS整体运行的可行性。此外，根据实验结果进行了分析，表明在DWC期间，只需保持车辆的负载线圈与源线圈对齐，ACAS就可以多传输26%的能量。
This paper proposes an autonomous coil alignment system (ACAS) for electric vehicles (EVs) with dynamic wireless charging (DWC) to mitigate the reduction in received power caused by lateral misalignment between the source and load coils. The key component of the ACAS is a novel sensor coil design, which can detect the load coil's left or right position relative to the source coil by observing the change in voltage phase. This allows the lateral misalignment to be estimated through the wireless power transfer (WPT) system alone, which is a novel tracking method for vehicular applications. Once misalignment is detected, the vehicle's lateral position is self-adjusted by an autonomous steering function. The feasibility of the overall operation of the ACAS was verified through simulation and experiments. In addition, an analysis based on experimental results was conducted, demonstrating that 26% more energy can be transferred during DWC with the ACAS, just by keeping the vehicle's load coil aligned with the source coil.