A piezoelectric energy harvester with vortex induced vibration
- Resource Type
- Conference
- Authors
- Song, Ru-jun; Shan, Xiao-biao; Li, Jin-zhe; Xie, Tao; Sun, Qi-gang
- Source
- 2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA), 2015 Symposium on. :322-325 Oct, 2015
- Subject
- Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Signal Processing and Analysis
Vibrations
Power generation
Energy harvesting
Resistance
Structural beams
Mathematical model
Fluids
Vortex-induced vibration
Piezoelectric
- Language
This paper presents a piezoelectric energy harvester (PEH) which can convert fluid kinetic energy into electricity with vortex induced vibration (VIV). The PEH is composed by a piezoelectric cantilever beam and a cylinder extension. Dynamic response and energy harvesting of the PEH are studied numerically. It is found that maximum output power can be obtained with optimal resistance and the more power output, the stronger elimination of vibration amplitude. Vibration frequency makes greater contribution on power output at smaller cylinder diameter and decreases with increasing of cylinder diameter. Vibration amplitude plays main role on output power and increases first until reaching peak point with increasing of cylinder diameter. Maximum output power can be obtained with reasonable cylinder diameter.