Wireless power transfer (WPT) technology can completely isolate the equipment from the power supply, and has been widely used. However, the transmission efficiency of WPT system is optimal only as the transmitting coil was completely aligned with the receiving coil. But in practical applications, the mobile devices are all dynamic system, and perfectly alignment of the coils is a very demanding condition. In order to solve this problem, the paper proposed a coil position adaptive adjustment control scheme of WPT system with lateral misalignment or angular misalignment. Firstly, the relationship between transmission efficiency and lateral misalignment and angular misalignment was analyzed. And the research results show that if there is a lateral misalignment between the coils, the transmission efficiency can be optimized by adjusting the angular misalignment. Secondly, based on the hill climbing algorithm, a coil position adaptive adjustment control method was proposed. Finally, a coil position adaptive adjustment WPT system experimental platform was built, and the experimental researches are carried on. The results of the experiment show that as the transfer distance is 0.10 m and the lateral misalignment is 0.12 m, the transfer efficiency can be increased from 38.38% to 55.61% through the proposed control scheme. And the results verify the feasibility and effectiveness of control scheme proposed in the paper. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

中文翻译：

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无线电能传输系统线圈位置自适应调节控制方案研究

无线电力传输（WPT）技术可以将设备与电源完全隔离，并得到了广泛的应用。然而，只有当发射线圈与接收线圈完全对准时，WPT系统的传输效率才是最佳的。但在实际应用中，移动设备都是动态系统，线圈的完美对准是一个非常苛刻的条件。为了解决这一问题，提出一种具有横向失准或角度失准的WPT系统线圈位置自适应调节控制方案。首先，分析了传动效率与横向不对中和角度不对中之间的关系。研究结果表明，如果线圈之间存在横向错位，可以通过调整角度错位来优化传输效率。其次，基于爬山算法，提出了一种线圈位置自适应调节控制方法。最后搭建了线圈位置自适应调节WPT系统实验平台，并进行了实验研究。实验结果表明，当传输距离为0.10 m、横向错位为0.12 m时，通过所提出的控制方案，传输效率可以从38.38%提高到55.61%。结果验证了本文提出的控制方案的可行性和有效性。 © 2024 日本电气工程师协会和 Wiley periodicals LLC。