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http://dx.doi.org/10.14775/ksmpe.2015.14.4.073

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)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.14, no.4, 2015 , pp. 73-84 More about this Journal
Abstract
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.
Keywords
Piezoelectric Effect; Bridge; Multiphysical Analysis; Fluid-Structure Interaction;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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