TY - GEN
T1 - Charge redistribution in flextensional piezoelectric energy harvesters
AU - Yang, Zheng Bao
AU - Zu, Jean
PY - 2014
Y1 - 2014
N2 - Harvesting ambient wasted energy has been in recent years a prominent research endeavor, aimed at providing alternative energy sources for low-power electronic mobile devices. Among various solutions, piezoelectric energy harvesters have attracted major attention due to the scalability, high-efficiency and the universal presence of vibration sources. In this paper, we studied the charge redistribution phenomenon in piezoelectric energy harvesters employing flextensional structures numerically and experimentally. A finite element model was developed firstly to study the mechanical and electrical response of flextensional transducers. The simulation results were then validated by a corresponding experiment. The research reveals that energy is dissipated in the process that charge flows from the high potential region to the low potential region. The electrode shape has a significant effect on the efficiency, and therefore should be considered fully when designing new energy harvesters. This study also assists in the design of flextensional sensors and actuators.
AB - Harvesting ambient wasted energy has been in recent years a prominent research endeavor, aimed at providing alternative energy sources for low-power electronic mobile devices. Among various solutions, piezoelectric energy harvesters have attracted major attention due to the scalability, high-efficiency and the universal presence of vibration sources. In this paper, we studied the charge redistribution phenomenon in piezoelectric energy harvesters employing flextensional structures numerically and experimentally. A finite element model was developed firstly to study the mechanical and electrical response of flextensional transducers. The simulation results were then validated by a corresponding experiment. The research reveals that energy is dissipated in the process that charge flows from the high potential region to the low potential region. The electrode shape has a significant effect on the efficiency, and therefore should be considered fully when designing new energy harvesters. This study also assists in the design of flextensional sensors and actuators.
KW - Cymbal
KW - Electrode
KW - Energy harvester
KW - Flextensional transducer
KW - Piezoelectric
UR - http://www.scopus.com/inward/record.url?scp=84904961637&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904961637&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.598.322
DO - 10.4028/www.scientific.net/AMM.598.322
M3 - Conference contribution
AN - SCOPUS:84904961637
SN - 9783038351795
T3 - Applied Mechanics and Materials
SP - 322
EP - 326
BT - Advanced Materials, Mechanics and Industrial Engineering
T2 - 4th International Conference on Mechanics, Simulation and Control, ICMSC 2014
Y2 - 21 June 2014 through 22 June 2014
ER -