한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

  • 제14권4호
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  • Pages.73-84
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  • 2015
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  • 1598-6721(pISSN)
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  • 2288-0771(eISSN)
한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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해조류를 모방한 압전 에너지 수확 장치의 설계와 실험

The Design and Experiment of Piezoelectric Energy-Harvesting Device Imitating Seaweed

  • Kang, Tae-Hun (Department of Mechanical Engineering, Changwon National University) ;
  • Na, Yeong-Min (Department of Mechanical Engineering, Changwon National University) ;
  • Lee, Hyun-Seok (Department of Mechanical Engineering, Changwon National University) ;
  • Park, Jong-Kyu (Department of Mechanical Engineering, Changwon National University) ;
  • Park, Tae-Gone (Department of Electrical Engineering, Changwon National University)
  • 투고 : 2015.04.28
  • 심사 : 2015.06.05
  • 발행 : 2015.08.31
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초록

Electricity generation using fossil fuels has caused environmental pollution. To solve this problem, research on new renewable energy sources (solar, wind power, geothermal heat, etc.) to replace fossil fuels is ongoing. These devices are able to generate power consistently. However, they have many weaknesses, such as high installation costs and limits to possible setup environments. Therefore, an active study on piezoelectric harvesting technology that is able to surmount the limitations of existing energy technologies is underway. Piezoelectric harvesting technology uses the piezoelectric effect, which occurs in crystals that generate voltage when stress is applied. Therefore, it has advantages, such as a wider installation base and lower technological costs. In this study, a piezoelectric harvesting device imitating seaweed, which has a consistent motion caused by fluid, is used. Thus, it can regenerate electricity at sea or on a bridge pillar, which has a constant turbulent flow. The components of the device include circuitry, springs, an electric generator, and balancing and buoyancy elements. Additionally, multiphysics analysis coupled with fluid, structure, and piezoelectric elements is conducted using COMSOL Multiphysics to evaluate performance. Through this program, displacement and electric power were analyzed, and the actual performance was confirmed by the experiment.

키워드

참고문헌

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피인용 문헌

  1. 심벌형 압전 에너지 하베스터 에너지 수율 향상 연구 vol.16, pp.1, 2015, https://doi.org/10.14775/ksmpe.2016.16.1.070