Abstract：This paper analyzes the transmission power of magnetic resonance wireless power transfer system (WPT). Based on results of comparing power transfer characteristics of resonant system to the one of non-resonant system, the idea of integrally analyzing loss of power transfer system is proposed, of which the analytical category includes the loss of capacitor and drive source. Through the establishment of loss analyzing equivalent circuit, the design thought of overall considering improving quality factor and reducing active power loss is put forward and verified by experimental results.
朱春波, 于春来, 毛银花, 陈清泉. 磁共振无线能量传输系统损耗分析[J]. 电工技术学报, 2012, 27(4): 13-17.
Zhu Chunbo, Yu Chunlai, Mao Yinhua, Chen Qingquan. Analysis of the Loss of Magnetic Resonant Wireless Power Transfer. Transactions of China Electrotechnical Society, 2012, 27(4): 13-17.
[1] 武瑛, 严陆光, 黄常纲, 等．新型无接触电能传输系统的性能分析[J]. 电工电能新技术, 2003, 22(4): 10-13, 43. [2] 马纪梅, 杨庆新, 陈海燕. 影响无接触供电系统效率的因素分析[J]. 电工技术学报, 2010, 25(7): 19-22. [3] Rindorf L, Lading L, Breinbjerg O. Resonantly coupled antennas for passive sensors[C]. Proceedings of the 2008 IEEE Sensors, 2008: 1611-1614. [4] Ko W, Liang S, Fung C. Design of radio- frequency powered coils for implant instruments[J]. Medical and Biological Engineering and Computing, 1977, 15(6): 634-640. [5] Komaru T, Koizumi M, Komurasaki K, et al. Parametric evaluation of mid-range wireless power transmission[C]. Proceedings of the 2010 IEEE International Conference on Industrial Technology (ICIT), 2010: 789-792. [6] Wenzhen F, Bo Z, Dongyuan Q, et al. Analysis of transmission mechanism and efficiency of resonance coupling wireless energy transfer system[C]. Proceedings of the 2008 International Conference on Electrical Machines and Systems, 2008. [7] Karalis A, Joannopoulos J, Soljacic M. Efficient wireless non-radiative mid-range energy transfer [J]. Annals of Physics, 2008, 323 (1): 34-48. [8] Kurs A, Karalis A, Moffatt R, et al. Wireless power transfer via strongly coupled magnetic resonances [J]. Science, 2007, 317 (5834): 83-86. [9] Chen C J, Chu T H, Lin C L, et al. A study of loosely coupled coils for wireless power transfer[J]. IEEE Transactions on Circuits and Systems II: Express Briefs, 57 (7): 536-540. [10] Chunlai Y, Rengui L, Yinhua M, et al. Research on the model of magnetic-resonance based wireless energy transfer system[C]. Proceedings of the IEEE Vehicle Power and Propulsion Conference, 2009: 414-419.
2012, Vol. 27 
