Modeling the power output of piezoelectric energy harvesters

Mahmoud Al Ahmad, H. N. Alshareef

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Design of experiments and multiphysics analyses were used to develop a parametric model for a d 33-based cantilever. The analysis revealed that the most significant parameters influencing the resonant frequency are the supporting layer thickness, piezoelectric layer thickness, and cantilever length. On the other hand, the most important factors affecting the charge output arethe piezoelectric thickness and the interdigitated electrode dimensions. The accuracy of the developed model was confirmed and showed less than 1% estimation error compared with a commercial simulation package. To estimate the power delivered to a load, the electric current output from the piezoelectric generator was calculated. A circuit model was built and used to estimate the power delivered to a load, which compared favorably to experimentally published power data on actual cantilevers of similar dimensions.

Original languageEnglish
Pages (from-to)1477-1484
Number of pages8
JournalJournal of Electronic Materials
Volume40
Issue number7
DOIs
Publication statusPublished - Jul 2011
Externally publishedYes

Keywords

  • D
  • Energy harvesting
  • Interdigitated electrode
  • Parametric modeling
  • Piezoelectric power generator

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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