Analysis and optimal design for power and efficiency transmission characteristics of magnetic resonance coupling power transmission systems

被引：4

作者：

Li, Changsheng ^{[1
]}

Zhang, He ^{[1
]}

Cao, Juan ^{[1
]}

Liu, Ming ^{[2
]}

机构：

[1] Ministerial Key Laboratory of ZNDY, Nanjing University of Science and Technology, Nanjing

[2] Lianyungang Power Supply Company, State Grid Jiangsu Electric Power Company, Lianyungang

来源：

Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2015年 / 39卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Efficiency characteristics; Magnetic resonance coupling; Optimal control for energy and efficiency; Power characteristics; Wireless power transmission;

D O I：

10.7500/AEPS20140320004

中图分类号：

学科分类号：

摘要：

Power and efficiency are two important indexes for power transmission systems. By theoretical analysis combined with experiments, the transmission characteristics of power and efficiency for the wireless power transmission system based on magnetic resonance coupling are researched. The results show that there is the bifurcating phenomenon in both the bearing power and the frequency response curves of system efficiency. The bearing power and frequency response curves of a transmitting system with identical parameters at the transmitting and receiving terminals appear to be approximately symmetric in shape. The bearing power before bifurcation vanishes does not vary with the change in distance between transmitting and receiving terminals. There is the difference between the primary and secondary resonance frequencies when the frequency is bifurcated for asymmetrical systems, and the bearing power will be enhanced first and then declined with an increase in the transmission distance. Mathematical expressions for critical coupling coefficient and transmitting and receiving terminals optimization coupling coefficient for optimal power transmission are deduced. In view of the feature that the peak power and peak efficiency working frequency points do not coincide, an information feedback-based energy efficiency optimal control strategy is proposed. In addition, by the aid of the energy transmitting channel, the work state is fed back to the transmitting terminal using the load modulating technique to realize closed loop control of the energy transmission process. The conclusions drawn in the paper are in agreement with experimental results. ©2015 State Grid Electric Power Research Institute Press

引用

页码：92 / 97

页数：5

共 17 条

[1]

Bai Y., Wu G., Xiao H., Et al., A parameter matching method for power induction devices on power transmission lines, Automation of Electric Power Systems, 34, 21, pp. 75-80, (2010)

[2]

Zhong W.X., Lee C.K., Hui S.Y., General analysis on the use of Tesla's resonators in domino forms for wireless power transfer, IEEE Trans on Industrial Electronics, 60, 1, pp. 261-270, (2013)

[3]

Lu X., Sun Y., Wang Z., Et al., Analysis and parameter optimization of composite resonant inductive power transfer system, Automation of Electric Power Systems, 37, 4, pp. 119-124, (2013)

[4]

Xie F., Zhang B., Qiu D., Nonlinear behaviors analysis of full-bridge resonant converter based on loosely coupled transformer, Automation of Electric Power Systems, 38, 3, pp. 47-51, (2014)

[5]

Kurs A., Karalis A., Moffatt R., Et al., Wireless power transfer via strongly coupled magnetic resonances, Science, 317, pp. 83-86, (2007)

[6]

Zhao Z., Zhang Y., Chen K., New progress of magnetically-coupled resonant wireless power transfer technology, Proceedings of the CSEE, 33, 3, pp. 1-13, (2013)

[7]

Shen N., Li C., Zhang H., Modeling and analysis of wireless power transmission system based on magnetic coupling resonance, Chinese Journal of Scientific Instrument, 33, 12, pp. 2735-2741, (2012)

[8]

Thomas E.M., Heebl J.D., Pfeiffer C., Et al., A power link study of wireless non-radiative power transfer systems using resonant shielded loops, IEEE Trans on Circuits and Systems I: Regular Papers, 59, 9, pp. 2125-2136, (2012)

[9]

Huh J., Lee W., Choi S., Et al., Frequency-domain circuit model and analysis of coupled magnetic resonance systems, Journal of Power Electronics, 13, 2, pp. 275-286, (2013)

[10]

Imura T., Equivalent circuit for repeater antenna for wireless power transfer via magnetic resonant coupling considering signed coupling, Electrical Engineering in Japan, 183, 1, pp. 51-62, (2013)

← 1 2 →