Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Design and Analysis of a Vibration-Driven Electromagnetic Energy Harvester Using Multi-Pole Magnet

  • Munaz, Ahmed (School of Electrical Engineering, University of Ulsan) ;
  • Chung, Gwiy-Sang (School of Electrical Engineering, University of Ulsan)
  • Received : 2012.03.12
  • Accepted : 2012.04.21
  • Published : 2012.05.31
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Abstract

This paper presents the design and analysis of a vibration-driven electromagnetic energy harvester that uses a multi-pole magnet. The physical backgrounds of the vibration electromagnetic energy harvester are reported, and an ANSYS finite element analysis simulation has been used to determine the different alignments of the magnetic pole array with their flux lines and density. The basic working principles for a single and multi-pole magnet are illustrated and the proposed harvester has been presented in a schematic diagram. Mechanical parameters such as input frequency, maximum displacement, number of coil turns, and load resistance have been analyzed to obtain an optimized output power for the harvester through theoretical study. The paper reports a maximum of 1.005 mW of power with a load resistance of $1.9k{\Omega}$ for 5 magnets with 450 coil turns.

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References

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