Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Design and Fabrication of a Low Frequency Vibration Driven High-Efficiency Electromagnetic Energy Harvester

저 주파수용 FR-4 스프링 기반 고효율 진동형 전자기식 에너지 하베스터의 설계 및 제작

  • Received : 2012.03.30
  • Accepted : 2012.07.05
  • Published : 2012.07.31
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Abstract

This paper describes the design and fabrication of a low frequency vibration driven high-efficiency electromagnetic energy harvester based on FR(Flame Resistance)-4 spring which converts mechanical energy into useful electrical power. The fabricated generator consists of a vertically polarized NdFeB permanent magnet attached to the center of spring and a planar type copper coil which has higher efficiency compare with cylindrical type coil. ANSYS finite analysis and Matlab were used to determine the resonance frequency and output power. The generator is capable of producing up to 1.36 $V_{pp}$ at 9 Hz, which has the maximum power of 639 ${\mu}W$ with a load resistance of $3.25k{\Omega}$.

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References

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