Dynamic WPT Transmitting Through Fiber-Belt Tire and CFRP Wheel to In-Wheel Arc-Shaped Coil
Dynamic WPT Transmitting Through Fiber-Belt Tire and CFRP Wheel to In-Wheel Arc-Shaped Coil
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DOI：
10.1109/jestie.2020.3033549
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发表时间：
2021-04
期刊：
影响因子：
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通讯作者：
O. Shimizu;Takashi Utsu;H. Fujimoto;D. Gunji;I. Kuwayama
中科院分区：
文献类型：
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作者：
O. Shimizu;Takashi Utsu;H. Fujimoto;D. Gunji;I. Kuwayama
动态无线电力传输（WPT）可以解决电动汽车续航里程短的问题；此外，它还减少了电动汽车的重型电池，从而提高了电动汽车的效率。然而，阻止动态WPT被异物传输是动态WPT的主要问题之一。防止接收线圈与发射线圈之间有异物进入是增加WPT机会和WPT能量的最佳方法。本文旨在提出一种新的WPT系统——轮毂内线圈，它可以通过轮胎和车轮之间的动力传递来防止异物，并提出了合适的材料和设计。采用小型评价设备对系统所用的车轮和轮胎非金属材料进行了实际测量评价；在此基础上，提出了降低WPT效率的合适材料。并通过全尺寸模型和功率传输试验对系统进行了评估。此外，采用电弧线圈的互感模型，可以最大限度地减少发射线圈和接收线圈之间的气隙。
Dynamic wireless power transfer (WPT) can solve the short cruising range problem of electric vehicles; moreover, it makes electric vehicles more efficient due to reducing heavy battery of electric vehicles. However to be stopped transmission of dynamic WPT by foreign matter objects is one of the major problems of dynamic WPTs. Prevention of the entry of foreign objects between the transmitter and receiver coils is the best method to increase the opportunity WPT and energy of WPT. This article aims to propose a new WPT system named in-wheel coil, which can prevent foreign objects by power transfer through tire and wheel, and also proposes its suitable materials and design. The nonmetal materials of wheels and tires for the proposed system are evaluated by actual measurement with small evaluation equipment; hence, the suitable materials that decrease WPT efficiency hardly are proposed. The proposed system is also evaluated by full-scale model with power transfer test. In addition, the mutual inductance model of arc-shaped coil, which can minimize airgap between the transmitter coil and the receiver coil.