Experimental and Modelling Study of a Piezoelectric Energy HarvesterUnimorph Cantilever Arrays

Sensors & Transducers

Ashok Batra¹  Almuatasim Alomari¹ 

[1] Department of Physics, Chemistry and Mathematics (Materials Science Group) College of Engineering, Technology, and Physical Sciences Alabama A&M University Normal, Alabama 35762 USA;

关键词: Piezoelectric;    Unimorph;    PVDF;    Mode shapes;    Modelling;    FEA;    COMSOL.;   

DOI  :  

来源: DOAJ

【 摘 要 】

The electrical output parameters and mode shapes of multiple piezoelectric unimorph cantilever beams (UCB’s) with same thickness and different length reported and examined. Connecting arrays of 5 commercial unimorph beams made of polyvinylidene difluoride (PVDF) in series showed widening in the bandwidth and increasing in the power magnitude of energy harvester comparing to single unimorph beam. The output power was increased from 2 µW to 5 µW and the bandwidth was widened from (47, 55) Hz to (22, 88) Hz. Finite element analysis (FEA) was used to investigate about the first fifth mode shapes of the suggested system using COMSOL multi-physics, with a good agreement between model and experiment.

【 授权许可】

Unknown