Design of piezoelectric energy harvesting system by magnetic force-controlled resonance frequency

Chan Ho Yang, Daniel Song, Min Sik Woo, Seong Kwang Hong, Ki Hwan Baek, Tae-Hyun Sung

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We designed a piezoelectric energy harvesting system that can be controlled the resonance frequency to the frequency of external energy. A permanent magnet (10 mm × 10 mm × 5 mm) was affixed to the free end of cantilever, and a permanent magnet was affixed to each of the four faces of a rotor at 90° angles. The effect of the dimension of the permanent magnets (20 mm × 20 mm × 10 mm, 30 mm × 20 mm × 10 mm, and 40 mm × 20 mm × 10 mm) and the effect of the pole array (NNNN, SSSS, NSNS, and NNSS) were experimentally tested. The optimum conditions were selected by testing varied distances between the magnets at varied rpm. The experiments demonstrated that the maximum output voltage was generated for the largest magnet and the minimum distance. The most effective way to control the resonance frequency was to modify the pole arrays of magnets affixed to the rotor. Furthermore, the optimum conditions were determined at each distance by changing the pole array and rpm. Simulation software supports the experimental results.

Original languageEnglish
Pages (from-to)24-32
Number of pages9
JournalFerroelectrics
Volume449
Issue number1
DOIs
StatePublished - 2013 Dec 6

Fingerprint

Energy harvesting
permanent magnets
Permanent magnets
Magnets
Poles
poles
magnets
rotors
Rotors
energy
computer programs
output
Testing
Electric potential
electric potential
simulation
Experiments

Keywords

  • Magnetic force
  • Piezoelectric energy harvesting
  • Resonance frequency

Cite this

Yang, Chan Ho ; Song, Daniel ; Woo, Min Sik ; Hong, Seong Kwang ; Baek, Ki Hwan ; Sung, Tae-Hyun. / Design of piezoelectric energy harvesting system by magnetic force-controlled resonance frequency. In: Ferroelectrics. 2013 ; Vol. 449, No. 1. pp. 24-32.
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Design of piezoelectric energy harvesting system by magnetic force-controlled resonance frequency. / Yang, Chan Ho; Song, Daniel; Woo, Min Sik; Hong, Seong Kwang; Baek, Ki Hwan; Sung, Tae-Hyun.

In: Ferroelectrics, Vol. 449, No. 1, 06.12.2013, p. 24-32.

Research output: Contribution to journalArticle

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AU - Song, Daniel

AU - Woo, Min Sik

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