Micro piezoelectric wind-energy harvester based on the mechanism of wind-induced vibration

Yang Cao, Renwen Chen

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A micro piezoelectric wind-energy harvester is put forward based on the mechanism of wind-induced vibration, which would transfer the wind energy to the electricity. The device comprises a cavity and a piezo-film vibration sensor. A slender cylinder is attached at the free tip of piezoelectric film vibration beam, inducing the beam to vibrate because of the principle of vortex-induced vibration. Apart from the vortex-induced vibration, other types of wind-induced vibration also contribute to the vibration of piezoelectric film. The size of device is 30 mm×16 mm×14 mm, and under the condition of 7 m/s wind speed with 1.8 MΩ resistance, the power is 0.84 μW. Meanwhile, the efficiency can be raised by increasing the number of piezoelectric film vibration beam.

Original languageEnglish
Pages (from-to)558-561
Number of pages4
JournalYadian Yu Shengguang/Piezoelectrics and Acoustooptics
Volume38
Issue number4
Publication statusPublished - 2016 Aug 1
Externally publishedYes

Keywords

  • Energy harvester
  • Micro device
  • Piezoelectric film
  • Wind energy
  • Wind-induced vibration

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Materials Chemistry

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