Journal of Magnetics

  • 제20권3호
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  • Pages.252-257
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  • 2015
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  • 1226-1750(pISSN)
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  • 2233-6656(eISSN)
한국자기학회 (The Korean Magnetics Society)
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Analysis of Electromotive Force Characteristics for Electromagnetic Energy Harvester using Ferrofluid

  • Kim, Young Sun (Department of Electrical and Electronic Engineering, Joongbu University)
  • 투고 : 2015.04.06
  • 심사 : 2015.07.16
  • 발행 : 2015.09.30
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초록

This paper investigates the concept and implementation of an energy harvesting device using a ferrofluid sloshing movement to generate an electromotive force (EMF). Ferrofluids are often applied to energy harvesting devices because they have both magnetic properties and fluidity, and they behave similarly to a soft ferromagnetic substance. In addition, a ferrofluid can change its shape freely and generate an EMF from small vibrations. The existing energy harvesting techniques, for example those using piezoelectric and thermoelectric devices, generate minimal electric power, as low as a few micro-watts. Through flow analysis of ferrofluids and examination of the magnetic circuit characteristics of the resultant electromagnetic system, an energy harvester model based on an electromagnetic field generated by a ferrofluid is developed and proposed. The feasibility of the proposed scheme is demonstrated and its EMF characteristics are discussed based on experimental data.

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참고문헌

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피인용 문헌

  1. Harvesting energy from the sloshing motion of ferrofluids in an externally excited container: Analytical modeling and experimental validation vol.28, pp.7, 2016, https://doi.org/10.1063/1.4954787
  2. Vibration energy harvester with low resonant frequency based on flexible coil and liquid spring vol.109, pp.20, 2016, https://doi.org/10.1063/1.4967498