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http://dx.doi.org/10.5369/JSST.2011.20.1.25

Design and Analyses of Vibration Driven Electromagnetic Energy Harvester with High Power Generation at Low Frequency  

Chung, Gwiy-Sang (School of Electrical Eng., University of Ulsan)
Ryu, Kyeong-Il (School of Electrical Eng., University of Ulsan)
Publication Information
Journal of Sensor Science and Technology / v.20, no.1, 2011 , pp. 25-29 More about this Journal
Abstract
This paper describes the design and analyses of vibration driven electromagnetic energy harvester with high power generation which is suitable for supplying power generator from human body motion. The proposed harvester consists of magnet, coil, and SM (Soft magnetic Material). In order to generate more induced voltage, the SM to concentrate flux lines from end of magnetic poles was arranged into insert moving magnet. Each model was designed and analyzed by using ANSYS software to simulation. The maximum power is generated when load resistance of $1303\;{\Omega}$ is equal to coil resistance. The generated maximum power of for harvesters with SM is $677.85\;{\mu}W$ and 5.46 times higher than without SM at 6 Hz vibration frequency.
Keywords
Energy Harvester; Electromagnetic; Vibration; Soft magnetic Material;
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