Abstract：Wireless power transfer (WPT) technology realizes contactless power supply to equipments,e.g. mobile devices and rotating machinery,and avoids problems caused by power supply wires.However,in practical applications, such as medical electronic capsule and information feedback in WPT,the synchronous transfer of information is required.For such applications,a new dual resonant circuit is proposed in this paper,which is able to realize the synchronous transmission of power and information.Based on the analysis of the dual resonant circuit,the concept of the transfer factor is proposed to analyze the channel bandwidth and response time.The relationship between the transfer factor and the energy/information transfer performance is also studied.Experiments show that the energy transfer efficiency is above 70% when load is less than 10 Ω and the distance is less than 120 mm.By using the on-off-keying modulation mode,50 kHz signal can be effectively transferred at 122 mm air gap with 1.31 Ω load.
郭尧,魏国,郝潇潇,朱春波. 双谐振耦合能量信息同步传输技术研究[J]. 电工技术学报, 2015, 30(19): 18-25.
Guo Yao, Wei Guo, Hao Xiaoxiao, Zhu Chunbo. Study on Wireless Power and Information Synchronous Transfer Based on Dual Resonant Coupling Circuits. Transactions of China Electrotechnical Society, 2015, 30(19): 18-25.
[1] Kurs A,Karalis A,Moffatt R,et al.Wireless power transfer via strongly coupled magnetic resonances[J].Science,2007,317(5834):83-86. [2] Sun Z,Akyildiz I F.Magnetic induction communications for wireless underground sensor networks[J].IEEE Transactions on Antennas and Propagation,2010,58(7):2426-2435. [3] Bae S,Hong Y K,Lee J,et al.Pulsed ferrite magnetic field generator for through-the-earth communication systems for disaster situation in mines[J].Journal of Magnetics,2013,18(1):43-49. [4] Mirbozorgi S A,Nejad M M.A novel data transfer technique for bio-implantable devices through the inductive power transfer link[J].Analog Integrated Circuits and Signal Processing,2013,74(2):303-315. [5] Noguchi S,Inamori M,Sanada Y.Reliable data transmission for resonant-type wireless power transfer[J].IEICE Transactions on Fundamentals of Electronics,Communications and Computer Sciences,2013,E96A(1):298-303. [6] 周晓东,张河.用于引信的电能和信息非接触同步传输技术[J].兵工学报,2003,24(3):424-426. Zhou Xiaodong,Zhang He.Contactless synchronous transmission of power and information for fuzes[J].Acta Armamentarii,2003,24(3):424-426. [7] 李长生,张合.基于磁共振的引信用能量和信息无线同步传输方法研究[J].兵工学报,2011,32(5):537-542. Li Changsheng,Zhang He.Research on wireless power and information synchronous transmission method based on magnetic resonance for fuzes[J].Acta Armamentarii,2011,32(5):537-542. [8] 刘洋.ICPT系统中信号双向传输机理研究[D].重庆:重庆大学,2013. [9] 张爱国.感应式电能和信号同步传输技术的研究[D].哈尔滨:哈尔滨工业大学,2013.
2015, Vol. 30 
