Consideration of Array Module Design for Energy Harvesting of Power-Line Magnetic Noise


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Energy harvesting is a key technology for small self-sufficient devices, which use environmental energy as a source. If these devices target a wireless sensor network, their required energy is only a few mW. In our previous report, we demonstrated the ability to harvest 6.32 mW from a magnetic field of 21.2 μT at 60 Hz. This paper considers an array module design for power line magnetic noise energy harvesting. The experimental results show that small distance in axial direction makes the harvesting energy small. In order to investigate this phenomenon, magnetic flux distributions around the modules are also measured. From the results, we concluded that the modules should be separated by one diameter distance of the coil.



Edited by:

A.G. Mamalis, A. Kladas and M. Enokizono




K. Tashiro et al., "Consideration of Array Module Design for Energy Harvesting of Power-Line Magnetic Noise", Materials Science Forum, Vol. 721, pp. 191-198, 2012

Online since:

June 2012




[1] E. Paraskevadaki, S. Papathanassiou, and G. Vokas, Effect of partial shading on the PV module characteristic curves, Material Science Forum. 670 (2011) 391-398.


[2] E. S. Karapidakis, Y. A. Katsigiannis, P. S. Georgilakis, and E. Thalassinakis, Generation expansion planning to Crete power system for high penetration of renewable energy sources, Material Science Forum. 670 (2011) 407-414.


[3] C. Niţu, S. Niţu, B. Grămescu, and C. Mihalache, Piezoelectric devices for power harvesting on mechanical displacements, Material Science Forum. 670 (2011) 487-496.


[4] S. Roundy, P. K. Wright, and J. Rabaey, A study of low level vibrations as a power source for wireless sensor nodes, Computer Communications 26 (2003) 1131-1144.


[5] A. Kurs, A. Karalis, R. Moffatt, J. D. Joannopoulos, P. Fisher, and M. Soljacic, Wireless power transfer via strongly coupled magnetic resonances, Science 317 (2007) 83-86.


[6] ICNIRP, Guideline for limiting exposure to time-varying electric and magnetic fields (1 Hz to 100 kHz), Health phys 99 (2010) 818-836.

[7] K. Tashiro, H. Wakiwaka, S. Inoue and Y. Uchiyama, Energy harvesting of magnetic power-line noise, IEEE Transactions on Magnetics 47 (2011) 4441-4444.


[8] F. W. Grover, Inductance Calculations, Dover Phenix Editions, (2004).

[9] K. Tashiro, A. Matsuoka, and H. Wakiwaka, Simple-Box-9 coil system: A novel approach to design of a square coil system for producing uniform magnetic fields, Materials Science Forum, vol. 670 (2011) 275-283.


[10] A. Matsuoka, K. Matsumura, A. Kubota, K. Tashiro, and H. Wakiwaka, Residual magnetization measurements of a motor to be used in satellites, Proc. of SPIE 7500 (2009) 750012-1 - 750012-6.