TY - GEN
T1 - Characterizing piezoelectric cantilevers for vibration energy harvesting under ambient conditions
AU - Wei, Ran
AU - Wang, Peng
AU - Ko, Wen H.
AU - Feng, Philip X.L.
PY - 2013
Y1 - 2013
N2 - We report on measurement and modeling of dynamic energy harvesters based on oscillating piezoelectric cantilevers, along with careful calibration of energy conversion properties of such devices in their dynamic responses. We employ thin-film lead zirconate titanate (PZT)-based cantilevers fabricated by laser micromachining, with efficient proof masses enabled by a heavy alloy with a low melting temperature (65°C) for tuning frequency and damping. By measuring devices with different circuit parameters, and analyzing the energy conversion in time-domain oscillations, we show a model that quantitatively reveals the effects of the loading circuit for energy harvesting. We also show the effects of device dimensions on their vibrations and converted voltage output waveforms. In harvesting vibrational energy through cycles of oscillations (in 80Hz-1kHz devices), energy conversion efficiency as high as 25% has been attained.
AB - We report on measurement and modeling of dynamic energy harvesters based on oscillating piezoelectric cantilevers, along with careful calibration of energy conversion properties of such devices in their dynamic responses. We employ thin-film lead zirconate titanate (PZT)-based cantilevers fabricated by laser micromachining, with efficient proof masses enabled by a heavy alloy with a low melting temperature (65°C) for tuning frequency and damping. By measuring devices with different circuit parameters, and analyzing the energy conversion in time-domain oscillations, we show a model that quantitatively reveals the effects of the loading circuit for energy harvesting. We also show the effects of device dimensions on their vibrations and converted voltage output waveforms. In harvesting vibrational energy through cycles of oscillations (in 80Hz-1kHz devices), energy conversion efficiency as high as 25% has been attained.
KW - Cantilever
KW - Energy Harvesting
KW - Lead Zirconate Titanate (PZT)
KW - Piezoelectric
KW - Ring-Down Oscillation
KW - Vibration
UR - http://www.scopus.com/inward/record.url?scp=84890810606&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84890810606&partnerID=8YFLogxK
U2 - 10.1109/EnergyTech.2013.6645299
DO - 10.1109/EnergyTech.2013.6645299
M3 - Conference contribution
AN - SCOPUS:84890810606
SN - 9781467344449
T3 - 2013 IEEE Energytech, Energytech 2013
BT - 2013 IEEE Energytech, Energytech 2013
T2 - 2013 IEEE Energytech, Energytech 2013
Y2 - 21 July 2013 through 23 July 2013
ER -