Frequency selection for underwater wireless power transfer based on the analysis of eddy current loss

被引：11
|
作者：
Xu, Fulei [1 ]
Huang, Haocai [1 ,2 ,3 ]
机构：
[1] Zhejiang Univ, Inst Ocean Engn & Technol, Ocean Coll, Zhoushan 316021, Peoples R China
[2] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
[3] Zhejiang Univ, Hainan Inst, Sanya 572025, Peoples R China
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2023年 / 163卷
关键词：
Wireless power transfer (WPT); Eddy current loss (ECL); Equivalent ECL resistance; Optimal frequency; Efficiency; WINDING LOSSES; SYSTEM; OPTIMIZATION;
D O I：
10.1016/j.aeue.2023.154618
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Wireless power transfer (WPT) technology is ideal for wireless charging of unmanned underwater vehicles (UUV). However, in underwater WPT systems, the eddy current loss (ECL) caused by the conductivity of seawater cannot be ignored. This paper obtains the expressions of the equivalent ECL resistance and mutual inductance by calculating the complex power generated by the current in the electric field. An intuitive circuit model is used to describe ECL and its superposition effect. Based on the system efficiency expressions, the influence of the medium conductivity, coil gap and operating frequency on the transmission efficiency is analyzed. Results show that there is an optimal frequency to achieve the maximum dc-dc efficiency in the seawater. Simulated and experimental results verify the validity of the method in calculating ECL and capturing the optimal transmission frequency.
引用
收藏
页数：10
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