Publication detail

Nonlinear Piezoelectric Devices for Broadband Air-flow Energy Harvesting

BAI, Y. HAVRÁNEK, Z. TOFEL, P. MEGGS, C. HUGHES, H. BUTTON, T.

Original Title

Nonlinear Piezoelectric Devices for Broadband Air-flow Energy Harvesting

English Title

Nonlinear Piezoelectric Devices for Broadband Air-flow Energy Harvesting

Type

journal article in Web of Science

Language

en

Original Abstract

This paper presents preliminary work on an investigation of a nonlinear air-flow energy harvester integrating magnets and a piezoelectric cantilever array. Two individual piezoelectric cantilevers with the structure of free-standing multi-layer thick-films have been fabricated and assembled with a free spinning fan. The cantilevers were attached with different tip masses thereby achieving separated resonant frequencies. Also, permanent magnets were fixed onto the blades of the fan as well as the tips of the cantilevers, in order to create nonlinear coupling and transfer fluidic movement into mechanical oscillation. The device has been tested in a wind tunnel. Bifurcations in the spectra of the blade rotation speed of the fan as a function of output voltage have been observed, and a bandwidth (blade rotation speed range) widening effect has been achieved.

English abstract

This paper presents preliminary work on an investigation of a nonlinear air-flow energy harvester integrating magnets and a piezoelectric cantilever array. Two individual piezoelectric cantilevers with the structure of free-standing multi-layer thick-films have been fabricated and assembled with a free spinning fan. The cantilevers were attached with different tip masses thereby achieving separated resonant frequencies. Also, permanent magnets were fixed onto the blades of the fan as well as the tips of the cantilevers, in order to create nonlinear coupling and transfer fluidic movement into mechanical oscillation. The device has been tested in a wind tunnel. Bifurcations in the spectra of the blade rotation speed of the fan as a function of output voltage have been observed, and a bandwidth (blade rotation speed range) widening effect has been achieved.

Keywords

energy harvesting, piezoelectric cantilever

RIV year

2015

Released

20.11.2015

Publisher

Springer Heidelberg

Location

Tiergartenstrasse 17, D-69121 Heidelberg, Germany

ISBN

1951-6355

Periodical

European Physical Journal-Special Topics

Year of study

224

Number

14

State

FR

Pages from

2675

Pages to

2685

Pages count

11

URL

Documents

BibTex


@article{BUT115831,
  author="Yang {Bai} and Zdeněk {Havránek} and Pavel {Tofel} and Carl {Meggs} and Hana {Hughes} and Timothy William {Button}",
  title="Nonlinear Piezoelectric Devices for Broadband Air-flow Energy Harvesting",
  annote="This paper presents preliminary work on an investigation of a nonlinear air-flow energy harvester integrating magnets and a piezoelectric cantilever array. Two individual piezoelectric cantilevers with the structure of free-standing multi-layer thick-films have been fabricated and assembled with a free spinning fan. The cantilevers were attached with different tip masses thereby achieving separated resonant frequencies. Also, permanent magnets were fixed onto the blades of the fan as well as the tips of the cantilevers, in order to create nonlinear coupling and transfer fluidic movement into mechanical oscillation. The device has been tested in a wind tunnel. Bifurcations in the spectra of the blade rotation speed of the fan as a function of output voltage have been observed, and a bandwidth (blade rotation speed range) widening effect has been achieved.",
  address="Springer Heidelberg",
  chapter="115831",
  doi="10.1140/epjst/e2015-02582-8",
  howpublished="online",
  institution="Springer Heidelberg",
  number="14",
  volume="224",
  year="2015",
  month="november",
  pages="2675--2685",
  publisher="Springer Heidelberg",
  type="journal article in Web of Science"
}