Analysis and experimental results of frequency splitting of underwater wireless power transfer
Analysis and experimental results of frequency splitting of underwater wireless power transfer
复制标题
水下无线电力传输分频分析及实验结果
DOI：
10.1049/joe.2017.0194
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发表时间：
2017
影响因子：
--
通讯作者：
Jianxin Chu
中科院分区：
文献类型：
--
作者：
Wangqiang Niu;W. Gu;Jianxin Chu
水下无线电能传输是一种重要的水下设备供电技术，但其频率分裂现象尚未完全阐明。在这项研究中，频率分裂现象的对称平面双线圈无线电能传输（WPT）系统谐振在90 kHz的海水和淡水进行了研究。首先基于电路模型对该WPT系统在空气中的频率分裂进行了简要分析，然后给出了实验数据，结果表明该WPT系统在40-140 kHz范围内，在空气、淡水和海水中的功率传输差别不大。因此，空气中的频率分裂分析和观测同样适用于淡水和海水。结果表明，在海水和淡水条件下，该WPT系统存在V型频率分裂。在过耦合区，观察到该UWPT系统的频移，而在欠耦合区没有观察到频移。在欠耦合区，40-90 kHz的低频区，3种介质中的负载电压特性基本相同;在90-140 kHz的高频区，空气中的负载电压略大于淡水和海水中的负载电压。
Underwater wireless power transfer (UWPT) is an important technique to power underwater devices while its frequency splitting phenomena are not fully elucidated. In this study, frequency splitting phenomena of a symmetrical planar two-coil wireless power transfer (WPT) system resonated at 90 kHz are investigated in seawater and freshwater. A concise frequency splitting analysis of this WPT system in air based on circuit model is given first and then experimental data are reported to show there is little difference between power transfer in air, freshwater and seawater in the range of 40–140 kHz of this WPT system. Consequently, the frequency splitting analysis and observations in air are also applicable in freshwater and seawater. It is found a V-type frequency splitting pattern exists in this WPT system under seawater and freshwater. Frequency shift is observed in this UWPT system in overcoupled region, and no frequency shift is observed in undercoupled region. In undercoupled region, in the low frequency zone of 40–90 kHz the load voltage characteristics in three media are identical; in the high-frequency zone of 90–140 kHz, the load voltage in air is slightly larger than those in freshwater and seawater.
影响因子：
2.6
作者：
Han, Jun;Asada, Akira;Maki, Toshihiko
通讯作者：
Maki, Toshihiko