Detail publikace

Nonlinear Piezoelectric Devices for Broadband Air-flow Energy Harvesting

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

Originální název

Nonlinear Piezoelectric Devices for Broadband Air-flow Energy Harvesting

Anglický název

Nonlinear Piezoelectric Devices for Broadband Air-flow Energy Harvesting

Jazyk

en

Originální abstrakt

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.

Anglický abstrakt

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.

Dokumenty

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"
}