Wireless Power Transmission into Metallic Tube Using Axial Slit for Infrastructure Diagnostics

Kohei Shimamura¹, Kimiya Komurasaki²

¹Department of Engineering Mechanics and Energy, University of Tsukuba, Tsukuba, Japan.
²Department of Aeronautics and Astronautics, The University of Tokyo, Tokyo, Japan.

DOI: 10.4236/wet.2015.63006                

Abstract

Wireless power transfer (WPT) using a metallic tube with axial slits was attempted to demonstrate WPT using magnetic resonance coupling to the diagnostics infrastructure. The transmission efficiency was measured at various distances using the transmission and receiver resonator in the tube. Furthermore, the transmission and receiver resonator were set respectively outside and inside of the tube. Experiment results were assessed computationally using the finite-difference time-domain (FDTD) simulation. As a result, the transmission efficiency of the transmitter and receiver resonators in the metallic slit tube was higher than that of the case without a metallic tube in the range of the normalized transmission-distance of x/d > 0.4. In the simulation, the current density on the metallic tube around both transmitter and receiver coil were connected. These results reveal that the slit on the tube plays a role of the relay coil.

Keywords

Wireless Power Transmission, Magnetic Resonance Coupling, Infrastructure Diagnostics

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Inoue, M. and Fujino, Y. (2010) Study of Social Impact of the I-35W Bridge Collapse in Minneapolis. Journal of Construction Management and Engineering, 66F, 14-26. (In Japanese). http://dx.doi.org/10.2208/jscejf.66.14
[2]	Maruyama, H. (2010) Requirements for Enhancement of Durability and Elongation of Lifetime of Infrastructure. Journal of Prestressed Concrete, Japan, 52, 34-37. (in Japanese)
[3]	Tsuno, K., Kamachi, H. and Nakanishi, Y. (2009) Monitoring System for Deformed Tunnel Using Wireless Sensor Network. Proceedings of Tunnel Engineering, 19, 245-249. (in Japanese)
[4]	Kuroda, T. (2010) Creation of High-Performance Ultra-Low-Power Short-Rage Wireless Mobile Information Systems. IPSJ Magazine, 51, 861-869. (in Japanese)
[5]	Zangl, H., Fuchs, A., Bretterklieber, T., Moser, M.J. and Holler, G. (2010) Wireless Communication and Power Supply Strategy for Sensor Applications within Closed Metal Walls. IEEE Transactions on Instrumentation and Measurement, 59, 1686-1692. http://dx.doi.org/10.1109/TIM.2009.2026602
[6]	Kurs, A., Karalis, A., Moffatt, R., Joannopoulos, J.D., Fisher, P. and Soljacic, M. (2007) Wireless Power Transfer via Strongly Coupled Magnetic Resonances. Science, 317, 83-86. http://dx.doi.org/10.1126/science.1143254
[7]	Kurs, A., Moffatt, R. and Soljacic, M. (2010) Simultaneous Mid-Range Power Transfer to Multiple Devices. Applied Physics Letters, 96, Article ID: 044102. http://dx.doi.org/10.1063/1.3284651
[8]	Komaru, T., Koizumi, M., Komurasaki, K., Shibata, T. and Kano, K. (2012) Compact and Tunable Transmitter and Receiver for Magnetic Resonance Power Transmission to Mobile Objects. In: Tech Wireless Power Transfer—Principles and Engineering Explorations, 133-150. http://dx.doi.org/10.5772/28068
[9]	Koizumi, M., Komurasaki, K., Mizuno, K. and Arakawa, Y. (2012) Wireless Power Feeding with Strongly Coupled Magnetic Resonance for a Flying Object. Wireless Engineering and Technology, 3, 86-89. http://dx.doi.org/10.4236/wet.2012.32014
[10]	Yamakawa, M., Shimamura, K., Komurasaki, K. and Koizumi, H. (2014) Demonstration of Automatic Impedance Matching and Constant Power Feeding to and Electric Helicopter via Magnetic Resonance Coupling. Wireless Engineering and Technology, 5, 45-53. http://dx.doi.org/10.4236/wet.2014.53006
[11]	Sample, A.P., Meyer, D.A. and Smith, J.R. (2011) Analysis, Experimental Results, and Range Adaption of Magnetically Coupled Resonators for Wireless Power Transfer. IEEE Transactions on Industrial Electronics, 58, 544-554. http://dx.doi.org/10.1109/TIE.2010.2046002
[12]	Imura, T. and Hori, Y. (2011) Maximizing Air Gap and Efficiency of Magnetic Resonant Coupling for Wireless Power Transfer Using Equivalent Circuit and Neumann Formula. IEEE Transactions on Industrial Electronics, 58, 4746-4752. http://dx.doi.org/10.1109/TIE.2011.2112317
[13]	Yu, X.F., Sandhu, S., Beiker, S., Sassoon, R. and Fan, S.H. (2011) Wireless Energy Transfer with the Presence of Metallic Planes. Applied Physics Letters, 99, Article ID: 214102. http://dx.doi.org/10.1063/1.3663576
[14]	Lee, W.S., Jang, H.S., Oh, K.S. and Yu, J.W. (2013) Close Proximity Effects of Metallic Environments on the Antiparallel Resonant Coil for Near-Field Powering. IEEE Transactions on Antennas and Propagation, 61, 3400-3403. http://dx.doi.org/10.1109/TAP.2013.2247553
[15]	Ishida, H. and Furukawa, H. (2015) Wireless Power Transmission through Concrete Using Circuits Resonating at Utility Frequency of 60 Hz. IEEE Transactions on Power Electronics, 30, 1220-1229. http://dx.doi.org/10.1109/TPEL.2014.2322876
[16]	Yamakawa, M., Mizuno, Y., Ishida, J., Komurasaki, K. and Koizumi, H. (2014) Wireless Power Transmission into a Space Enclosed by Metal Walls Using Magnetic Resonance Coupling. Wireless Engineering and Technology, 3, 86-89.
[17]	Kim, J.W., Son, H.C., Kim, K.H. and Park, Y.J. (2011) Efficiency Analysis of Magnetic Resonance Wireless Power Transfer with Intermediate Resonant Coil. IEEE Antennas and Wireless Propagation Letters, 10, 1609. http://dx.doi.org/10.1109/LAWP.2011.2178876
[18]	Zhang, F., Hackworth, S.A., Fu, W., Li, C., Mao, Z. and Sun, M. (2011) Relay Effect of Wireless Power Transfer Using Strongly Coupled Magnetic Resonance. IEEE Transactions on Magnetics, 47, 1478-1481. http://dx.doi.org/10.1109/TMAG.2010.2087010
[19]	Moon, S., Kim, B.C., Cho, S.Y., Ahn, C.H. and Moon, G.W. (2014) Analysis and Design of a Wireless Power Transfer System with an Intermediate Coil for High Efficiency. IEEE Transactions on Industrial Electronics, 61, 5861-5870. http://dx.doi.org/10.1109/TIE.2014.2301762
[20]	Pozar, D.M. (2011) Microwave Engineering. 4th Edition. Wiley, New York.
[21]	Balanis, C.A. (2005) Antenna Theory: Analysis and Design. 3rd Edition, Wiley-Interscience, New York.