Accurate Evaluation Method of Litz Coil AC Resistance in Wireless Power Transfer Magnetically-Coupled System

被引：0
|
作者：
Chen Q. [1 ]
Fan F. [1 ]
Wang J. [1 ]
Chen W. [1 ]
Deng X. [2 ]
机构：
[1] College of Electrical Engineering, Automation Fuzhou University, Fuzhou
[2] Fuzhou Changle District Electric Power Supply Branch, Fuzhou
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 24期
关键词：
additional core loss resistance; Litz coil; small signal measurement; winding AC resistance; Wireless power transfer;
D O I：
10.19595/j.cnki.1000-6753.tces.220774
中图分类号：
学科分类号：
摘要：
The winding loss of the wireless power transfer (WPT) magnetically-coupled system is an important part that affects the efficiency of the WPT system. However, there needs to be an effective evaluation method for winding loss (especially the winding loss of the Litz wire). This paper proposed a new method for evaluating the winding AC resistance. In this method, the electrical parameters of the WPT magnetically-coupled system were measured by a small signal instrument. The separation of the winding AC resistance and the additional core loss resistance under the measurement excitation signal was realized by core loss model calculation or finite element analysis (FEA) simulation. This method was suitable for evaluating the winding AC resistance of the WPT magnetically-coupled system and the air-gap inductor. The error between the FEA simulation results based on the 3-D air-gap inductor and the evaluation results of this method was less than 5%, which verified the proposed method. Finally, a 2kW WPT system prototype was built, and the correctness of Litz coil AC resistance extraction was verified by differential power. © 2022 Chinese Machine Press. All rights reserved.
引用
收藏
页码：6294 / 6305
页数：11
相关论文
共 24 条
  • [1] Xue Ming, Yang Qingxin, Zhang Pengcheng, Et al., Application status and key issues of wireless power transmission technology, Transactions of China Electrotechnical Society, 36, 8, pp. 1547-1568, (2021)
  • [2] Zhou Wei, Lan Jiahao, Mai Ruikun, Et al., Research on power management strategy of DC microgrid with photovoltaic, energy storage and EV-wireless power transfer in V2G mode, Transactions of China Electrotechnical Society, 37, 1, pp. 82-91, (2022)
  • [3] Shiba K, Nagato T, Tsuji T, Et al., Energy transmission transformer for a wireless capsule endoscope: analysis of specific absorption rate and current density in biological tissue, IEEE Transactions on Biomedical Engineering, 55, 7, pp. 1864-1871, (2008)
  • [4] Wu Lijun, Li Guanxi, Zhang Zhuhaobo, Et al., A wireless power transfer system topology with automatic switching characteristics of constant current and constant voltage output for electric vehicle charging, Transactions of China Electrotechnical Society, 35, 18, pp. 3781-3790, (2020)
  • [5] Liao Zhijuan, Feng Qikai, Wu Fan, Et al., Real eigenstate operating modes and energy efficiency characteristic analysis of magnetic coupling wireless power transfer system, Automation of Electric Power Systems, 46, 3, pp. 164-174, (2022)
  • [6] Xie Wenyan, Chen Wei, Research on anti-offset constant-current output wireless power transfer system based on combined compensation network, Transactions of China Electrotechnical Society, 37, 6, pp. 1495-1512, (2022)
  • [7] Sun Shubin, Zhang Bo, Li Jianguo, Et al., Analysis and development on topologies of multi-load magnetic-coupling wireless power transfer system, Transactions of China Electrotechnical Society, 37, 8, pp. 1885-1903, (2022)
  • [8] Xie Wenyan, Chen Wei, Research progress of Omnidirectional wireless power transfer technology, Automation of Electric Power Systems, 44, 4, pp. 202-215, (2020)
  • [9] Yin Zhongdong, Wei Wensi, Wang Ping, Et al., Calculation and experimental study on harmonic loss of transformer windings considering skin effect and proximity effect, Power System Protection and Control, 47, 4, pp. 143-151, (2019)
  • [10] Kavitha M, Bobba P B, Prasad D., A study on effect of coil structures and core configurations on parameters of wireless EV charging system, 2017 IEEE Transportation Electrification Conference (ITEC), pp. 1-6, (2017)
123