• Title/Summary/Keyword: Harvester

Search Result 400, Processing Time 0.024 seconds

Performance Study of Diagonally Segmented Piezoelectric Vibration Energy Harvester (대각선 방향으로 분할된 압전 진동 에너지 수확 장치의 성능 연구)

  • Kim, Jae Eun
    • Transactions of the Korean Society of Mechanical Engineers A
    • /
    • v.37 no.8
    • /
    • pp.983-989
    • /
    • 2013

  • This study proposes a piezoelectric vibration energy harvester composed of two diagonally segmented energy harvesting units. An auxiliary structural unit is attached to the tip of a host structural unit cantilevered to a vibrating base, where the two components have beam axes in opposite directions from each other and matched short-circuit resonant frequencies. Contrary to the usual observations in two resonant frequency-matched structures, the proposed structure shows little eigenfrequency separation and yields a mode sequence change between the first two modes. These lead to maximum power generation around a specific frequency. By using commercial finite element software, it is shown that the magnitude of the output power from the proposed vibration energy harvester can be substantially improved in comparison with those from conventional cantilevered energy harvesters with the same footprint area and magnitude of a tip mass.

  • https://doi.org/10.3795/KSME-A.2013.37.8.983 인용 PDF KSCI