An Efficiency Enhancement Technique for a Wireless Power Transmission System Based on a Multiple Coil Switching Technique

被引:27
|
作者
Nair, Vijith Vijayakumaran [1 ]
Choi, Jun Rim [1 ]
机构
[1] Kyungpook Natl Univ, Sch Elect Engn, Daegu 702701, South Korea
基金
新加坡国家研究基金会;
关键词
wireless power transmission; power transfer efficiency; coupling coefficient tuning; magnetically-coupled resonators; COUPLED RESONATORS; MUTUAL INDUCTANCE; OPTIMIZATION; RECEIVER; DESIGN;
D O I
10.3390/en9030156
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
For magnetic-coupled resonator wireless power transmission (WPT) systems, higher power transfer efficiency can be achieved over a greater range in comparison to inductive-coupled WPT systems. However, as the distance between the two near-field resonators varies, the coupling between them changes. The change in coupling would in turn vary the power transfer efficiency. Generally, to maintain high efficiency for varying distances, either frequency tuning or impedance matching are employed. Frequency tuning may not limit the tunable frequency within the Industrial Scientific Medical (ISM) band, and the impedance matching network involves bulky systems. Therefore, to maintain higher transfer efficiency over a wide range of distances, we propose a multiple coil switching wireless power transmission system. The proposed system includes several loop coils with different sizes. Based on the variation of the distance between the transmitter and receiver side, the power is switched to one of the loop coils for transmission and reception. The system enables adjustment of the coupling coefficient with selective switching of the coil loops at the source and load end and, thus, aids achieving high power transfer efficiency over a wide range of distances. The proposed technique is analyzed with an equivalent circuit model, and simulations are performed to evaluate the performance. The system is validated through experimental results that indicate for a fixed frequency (13.56 MHz) that the switched loop technique achieves high efficiency over a wider range of distances.
引用
收藏
页数:15
相关论文
共 50 条
  • [1] Efficiency enhancement of a wireless power transmission system applying a superconducting coil
    Kang, Min-Sang
    Choi, Hyo-Sang
    Jeong, In-Sung
    [J]. Transactions of the Korean Institute of Electrical Engineers, 2015, 64 (02): : 353 - 356
  • [2] A review of the impacts of coil design on system efficiency of wireless power transmission
    Li, Suhuan
    Liao, Chenglin
    Wang, Lifang
    Guo, Yanjie
    Zhu, Qingwei
    [J]. Diangong Jishu Xuebao/Transactions of China Electrotechnical Society, 2015, 30 : 270 - 275
  • [3] Efficiency enhancement for power amplifiers using dynamic bias switching technique
    Van, J.
    Jung, S.
    Park, H.
    Kim, M.
    Cho, H.
    Jeong, J.
    Kwon, S.
    Lim, K.
    Yang, Y.
    [J]. ELECTRONICS LETTERS, 2008, 44 (05) : 356 - 358
  • [4] Multifunctional coil technique for alignment-agnostic and Rx coil size-insensitive efficiency enhancement for wireless power transfer applications
    Yoon, Seoyeon
    Lim, Taejun
    Lee, Yongshik
    [J]. SCIENTIFIC REPORTS, 2023, 13 (01)
  • [5] Multifunctional coil technique for alignment-agnostic and Rx coil size-insensitive efficiency enhancement for wireless power transfer applications
    Seoyeon Yoon
    Taejun Lim
    Yongshik Lee
    [J]. Scientific Reports, 13
  • [6] A High-Efficiency Wireless Power Transfer System With Variable Capacitor Technique for Compensating Coil Misalignment
    Lai, Ching-Ming
    Hsu, Ching-Hsuan
    Lin, Yi-Chen
    Chen, Meng-Zong
    Zheng, Ting-Zhong
    [J]. PROCEEDINGS OF 2024 IEEE WIRELESS POWER TECHNOLOGY CONFERENCE AND EXPO, WPTCE, 2024, : 688 - 692
  • [7] A metamaterial-incorporated wireless power transmission system for efficiency enhancement
    Wang, Meng
    Guo, Jingjing
    Shi, Yanyan
    Wang, Mengmeng
    Song, Guangcheng
    Yin, Renliang
    [J]. INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, 2023, 51 (07) : 3051 - 3065
  • [8] Efficiency Enhancement in a Wireless Power Transmission System Using Parasitic Components
    Yeap, Kim Ho
    Cheah, Agnes Ruey Chyi
    Yeong, Kee Choon
    Hiraguri, Takefumi
    Yokoyama, Shunya
    Shitara, Isamu
    Hirasawa, Kazuhiro
    Wakabayashi, Ryoji
    [J]. IETE JOURNAL OF RESEARCH, 2020, 66 (06) : 806 - 814
  • [9] Improvement in Power Transmission Efficiency of Wireless Power Transfer System Using Superconducting Intermediate Coil
    Oshimoto, N.
    Sakuma, K.
    Sekiya, N.
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2023, 33 (05)
  • [10] Efficiency analysis and optimization of four coil magnetic resonance wireless power transmission system
    Li, Qiang
    Zhang, Zhi-Ren
    Ye, Jian-Qiao
    Gu, Wei
    [J]. PROCEEDINGS OF THE 3RD ANNUAL INTERNATIONAL CONFERENCE ON ELECTRONICS, ELECTRICAL ENGINEERING AND INFORMATION SCIENCE (EEEIS 2017), 2017, 131 : 134 - 142