Charge redistribution in flextensional piezoelectric energy harvesters

Zheng Bao Yang, Jean Zu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationAdvanced Materials, Mechanics and Industrial Engineering
Pages322-326
Number of pages5
DOIs
StatePublished - 2014
Event4th International Conference on Mechanics, Simulation and Control, ICMSC 2014 - Moscow, Russian Federation
Duration: 21 Jun 201422 Jun 2014

Publication series

NameApplied Mechanics and Materials
Volume598
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference4th International Conference on Mechanics, Simulation and Control, ICMSC 2014
Country/TerritoryRussian Federation
CityMoscow
Period21/06/1422/06/14

Keywords

  • Cymbal
  • Electrode
  • Energy harvester
  • Flextensional transducer
  • Piezoelectric

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