• Title/Summary/Keyword: vibration energy harvesting

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A Development of Energy Storage Monitoring System Architecture for Triboelectric Nanogenerator in the Implant Environment (임플란트 환경에서 TENG 소자를 고려한 효율적인 에너지 저장 모니터링 시스템 개발)

  • Park, Hyun-Moon;Hwang, Tae-Ho;Kim, Dong-Sun
    • The Journal of the Korea institute of electronic communication sciences
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    • v.13 no.2
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    • pp.473-480
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    • 2018

  • In 2012, a new energy capturing method called TENG was suggested for energy harvesting applications. The TENG which captures electric energy in forms of friction or vibration has been researched as a new energy harvesting generation device. However, TENG works on rather high voltage and yields relatively low current, and this requires additional energy conversion and saving methods with either in semiconductive elements or circuitry for its application. Irregular generation from vibration sources rattle under 5Hz especially requires empirical studies. In this article, we suggest a electricity generation platform with energy storage methods. The platform is mounted on large sized animals, and the generation is actively monitored and controlled via Bluetooth-Low Energy to verify the platform.

  • https://doi.org/10.13067/JKIECS.2018.13.2.473 인용 PDF KSCI

Investigation of piezoelectric ceramic size effect for miniaturing the piezoelectric energy harvester (소형 압전 에너지 하베스터 구현을 위한 세라믹 크기 변화)

  • Kim, Hyung-Chan;Jung, Woo-Suk;Kang, Chong-Yun;Yoon, Seok-Jin;Ju, Byeong-Kwon;Jeong, Dae-Yong
    • Journal of Sensor Science and Technology
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    • v.17 no.4
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    • pp.267-272
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    • 2008

  • Energy harvesting from the vibration through the piezoelectric effect has been studied for powering the small wireless sensor nodes. As piezoelectric uni-morph cantilever structure can transfer low vibration to large displacement, this structure was commonly deployed to harvest electric energy from vibrations. Through our previous results, when stress was applied on the cantilever, stress was concentrated on the certain point of the ceramic of the cantilever. In this study, for miniaturing the energy harvester, we investigated how the size of ceramics and the stress distribution in ceramic affects energy harvester characteristics. Even though the area of ceramic was 28.6 % decreased from $10{\times}35{\times}0.5mm^3$ to $10{\times}25{\times}0.5mm^3$, both samples showed almost same maximum power of 0.45 mW and the electro-mechanical coupling factor ($K_{31}$) of 14 % as well. This result indicated that should be preferentially considered to generate high power with small size energy harvester.

  • https://doi.org/10.5369/JSST.2008.17.4.267 인용 PDF KSCI

Compact electromagnetic vibration suppressor and energy harvester; an experimental study

  • Aref Afsharfard;Hooman Zoka;Kyung Chun Kim
    • Smart Structures and Systems
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    • v.33 no.3
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    • pp.217-225
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    • 2024

  • In this study, an electromagnetic dynamic vibration suppressor and energy harvester is designed and studied. In this system, a gear mechanism is used to convert the linear motion to continuous rotary motion. Governing equations of motion for the system are derived and validated using the experimental results. Effects of changing the main parameters of the presented system, such as mass ratio, stiffness ratio and gear ratio on the electro-mechanical behavior of system are investigated. Moreover, using so-called Weighted Cost Function, the optimum parameters of the system are obtained. Finally, it is shown that the presented electromagnetic dynamic vibration absorber not only can reduce the undesired vibration of the main system but also it can harvest acceptable electrical energy.

  • https://doi.org/10.12989/sss.2024.33.3.217 인용