Equalization Method of the Wireless Power Transfer in an Electronic Shelf Label Power Supply System
Equalization Method of the Wireless Power Transfer in an Electronic Shelf Label Power Supply System
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DOI：
10.1109/tmag.2017.2734921
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发表时间：
2017-08
影响因子：
2.1
通讯作者：
Y. Bu;S. Mukhopadhyay
中科院分区：
文献类型：
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作者：
Y. Bu;S. Mukhopadhyay
在驱动电子货架标签（esl）的多个电源输出的无线电力传输设备中，我们提出了一种用于50/60 Hz电源的新型轨道变压器设计。通过周期性地对距离发射线圈最近的接收线圈进行短路，我们通过实验验证了功率可以以非常均匀的方式传输到每个ESL。我们期望目前使用周期性开关接收器线圈的方法比我们以前物理调节线圈之间的气隙的方法更方便、可靠和灵活。在验证实验中，在一个原型中，三个接收线圈的输出功率在大约60 mW的水平上均衡。在没有周期性开关的情况下，中心接收线圈的输出功率仅达到40 mW，而最靠近发射线圈的接收线圈的输出功率达到80 mW，输出功率波动约49%。本文提出了一种有效的无线电力传输设备设计策略。
In a wireless power transmission device that drives multiple power outputs for electronic shelf labels (ESLs), we propose a novel rail transformer design for use with a 50/60 Hz power supply. By periodically short circuiting the receiving coils located closest to the transmitting coil, we experimentally verified that power can be transmitted to each ESL in a significantly uniform fashion. We expect the present approach with periodically switched receiver coils to be much more convenient, reliable, and flexible than our previous method of physically adjusting the air gaps between coils. In verification experiments, the output power of three receiving coils in a prototype was equalized at a level of approximately 60 mW. Without periodic switching, the output power of the center receiving coil only reached 40 mW, whereas, the receiving coils closest to the transmitting coils reached an output level of 80 mW, with output power fluctuating by approximately 49%. This paper demonstrates an effective design strategy for wireless power transfer devices.