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http://dx.doi.org/10.4313/TEEM.2012.13.3.125

Design and Analysis of a Vibration-driven AA Size Electromagnetic Energy Harvester Using Magnetic Spring  

Foisal, Abu Riduan Md. (School of Electrical Engineering, University of Ulsan)
Chung, Gwiy-Sang (School of Electrical Engineering, University of Ulsan)
Publication Information
Transactions on Electrical and Electronic Materials / v.13, no.3, 2012 , pp. 125-128 More about this Journal
Abstract
This paper describes the design, simulation and characterization of an AA size electromagnetic energy harvester that is capable of converting environmental vibration into electrical energy. A magnetic spring technique is used to scavenge energy from low frequency external vibrations. The generator is characterized by ANSYS 2D finite element analysis, and optimized in terms of moving mass, fixed magnet size, coil width and load resistance. The optimized energy harvester is able to generate 53.5 mW of average power at 8.1 Hz resonance frequency, with a displacement of 0.5 mm.
Keywords
Energy harvester; Vibration; AA size; Magnetic spring; Low frequency;
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