电工技术学报  2024, Vol. 39 Issue (17): 5278-5288    DOI: 10.19595/j.cnki.1000-6753.tces.222031
电工理论与新技术 |
基于YBCO高温超导线圈的新型无线供电悬浮系统电能传输特性研究
郑智强1,2, 翁廷坤1,2, 李卓1,2, 申刘飞1,2, 黄守道1,2, 翟雨佳1,2,3
1.湖南大学电气与信息工程学院 长沙 410082;
2.海上风力发电装备与风能高效利用全国重点实验室 长沙 410082;
3.中国科学院电工研究所 北京 100190
Characterization of a New Wireless Power Supply Suspension System Based on YBCO High Temperature Superconducting Coil
Zheng Zhiqiang1,2, Weng Tingkun1,2, Li Zhuo1,2, Shen Liufei1,2, Huang Shoudao1,2, Zhai Yujia1,2,3
1. College of Electrical and Information Engineering Hunan University Changsha 410082 China;
2. State Key Laboratory of Offshore Wind Power Equipment and High-Efficient Utilization Wind Energy Changsha 410082 China;
3. Institute of Electrical Engineering China Academy of Sciences Beijing 100190 China
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摘要 近年来,以氧化钇钡铜(YBCO)为代表的第二代高温超涂层导体以其在20~77 K温区下极高的载流能力以及优越的力学性能和电磁性能,被广泛应用于电力、医疗、交通、军事、能源等领域。该文设计并构造了一种基于YBCO高温超导线圈的小型充电悬浮系统,该系统可以同时实现无线充电和自稳定悬浮功能,可应用于为小型物体无线供电悬浮展示。通过理论推导和有限元仿真分析发现,将低电阻、高载流密度的高温超导线圈引入无线充电系统中,可使系统的输出功率和输出效率都有显著的提高,最大分别提高了3倍和2.6倍,在低频段提升效果尤为明显。此外,实验表明该系统在10 mm悬浮高度范围内可以保持稳定悬浮和负载电压的高效输出,解决了现有电磁悬浮和电动悬浮技术中需要设计特定磁路结构和安装内置电池或电源而导致装置复杂及持续供电时间较短等问题,为超导无线电能传输技术的应用开辟了新方向。
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郑智强
翁廷坤
李卓
申刘飞
黄守道
翟雨佳
关键词 高温超导线圈无线电能传输有限元仿真传输性能超导磁悬浮    
Abstract:In recent years, the second-generation high temperature superconducting (HTS) coated conductor, particularly Yttrium Barium Copper Oxide (YBCO), has been widely applied in fields including electric power, medicine, transportation, military, and energy. This is due to its high current-carrying capacity and superior mechanical and electromagnetic properties within the 20~77 K temperature range. A compact charging suspension system based on the HTS coil is designed, which can simultaneously realize wireless charging and self-stabilized suspension, and can be applied to wireless power supply suspension exhibition for small objects. This innovative system solves the issues of complex devices and limited continuous power supply time caused by the need todesign a specific magnetic circuit structure and install a built-in battery or power supply in the existing electromagnetic levitation and electrodynamic suspension technology.
Through theoretical derivation and finite element analysis, it demonstrates that introducing the HTS coil with low resistance and high current density into the wireless power transfer (WPT) system can significantly enhance the output power and efficiency of the system, with a maximum increase of 3 times and 2.6 times, respectively. Specifically, the output power growth rate of the HTS-Cu WPT system increases from 54% to 199%, and the output efficiency growth rate increases from 88% to 162%, compared to studies done on the transmission performance of the Cu-Cu WPT system and the HTS-Cu WPT system at different suspension heights.
Furthermore, the study compared the properties of copper and HTS coils, finding that the AC resistance of the HTS coil consistently remains lower than that of the copper coil under identical conditions. As the system frequency decreases, the disparity in the quality factor Q between the copper and HTS coils widens, suggesting that incorporating an HTS coil in the low-frequency range significantly enhances the transmission performance of the WPT system. Additionally, the frequency characteristics of the load voltage in both the HTS-Cu WPT system and the Cu-Cu WPT system were measured and aligned with finite element analysis results, thereby validating the accuracy of the simulation model.
Finally, the experimental platform of the HTS-Cu wireless charging suspension system was constructed. The frequency characteristic of the load voltage in the HTS-Cu WPT suspension system was measured and compared with those of the Cu-Cu WPT system and another HTS-Cu WPT system. The results show that the load voltage for all three systems peaked at their respective resonance points of 60 kHz, 60 kHz, and 62 kHz, with maximum values of 4.14 V, 4.02 V, and 4.37 V, respectively. This demonstrates that including the HTS coil increased the maximum output voltage by 0.12 V and 0.35 V, respectively. However, it is essential to note that the spatial magnetic field generated by the permanent magnet structure in the HTS-Cu WPT suspension system increased the AC losses, thereby slightly reducing its transmission performance relative to the HTS-Cu WPT system, although it still outperformed the Cu-Cu WPT system. Meanwhile, the experiment illustrates that the system cannot move laterally or spin within a range of 10 mm, and maintain an efficient and constant load voltage output.
Key wordsHigh temperature superconducting (HTS) coil    wireless power transfer (WPT)    finite element simulation    transmission performance    superconducting maglev   
收稿日期: 2022-10-26     
PACS: TM12  
基金资助:国家自然科学基金(52177019)、中国科学技术协会青年人才托举计划(2021QNRC001)和湖南省创新平台与人才计划-湖湘青年英才(2021RC3058)资助项目
通讯作者: 翟雨佳 女,1990年生,教授,博士生导师,研究方向为超导电力技术。E-mail:yz378@hnu.edu.cn   
作者简介: 郑智强 男,2000年生,硕士,研究方向为高温超导无线电能传输。E-mail:zzq0101@hnu.edu.cn
引用本文:   
郑智强, 翁廷坤, 李卓, 申刘飞, 黄守道, 翟雨佳. 基于YBCO高温超导线圈的新型无线供电悬浮系统电能传输特性研究[J]. 电工技术学报, 2024, 39(17): 5278-5288. Zheng Zhiqiang, Weng Tingkun, Li Zhuo, Shen Liufei, Huang Shoudao, Zhai Yujia. Characterization of a New Wireless Power Supply Suspension System Based on YBCO High Temperature Superconducting Coil. Transactions of China Electrotechnical Society, 2024, 39(17): 5278-5288.
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