Abstract：Design of asymmetric coupling coils via coupled magnetic resonances is complicated in wireless power transfer (WPT), especially considering the uncertain effects of frequency split caused by the changes of asymmetric structure parameters. This issue constrains the development of the WPT technology. In this paper, the equivalent circuit model of asymmetric WPT system is established. Then the power and efficiency expressions of asymmetric coupling system are presented. Meanwhile, the influence of internal resistance and quality factor on frequency splitting is summarized. Finally, the experimental system is built to verify the theoretical analysis. The results not only prove the correctness of the proposed method, but also provide a beneficial reference for optimal control of WPT system with asymmetric coupled coil.
李阳, 尹建斌, 杨庆新, 薛明, 刘哲, 张献. 非对称耦合线圈内阻与品质因数对传输功率与效率及其频率分裂的影响[J]. 电工技术学报, 2018, 33(12): 2742-2750.
Li Yang, Yin Jianbin, Yang Qingxin, Xue Ming, Liu Zhe, Zhang Xian. Influence of Internal Resistance and Quality Factor on Transfer Power and Efficiency and Frequency Splitting. Transactions of China Electrotechnical Society, 2018, 33(12): 2742-2750.
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2018, Vol. 33 
