Energy harvester for use on nearby current-carrying conductors

Nguyen, Duy-Son; Wu, Zhiwei; White, Richard M.

doi:10.1088/1742-6596/660/1/012139

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Energy harvesting from an AC magnetic field has been studied by several groups. [19][20][21][22][23] Ryu et al reported a harvester using magnetoelectric (ME) laminate composite consisting of anisotropic piezoelectric singlecrystal fibers and a magnetostrictive Ni plate, which is called magneto-mechano-electric generator. The output power density was 46 mW cm −3 Oe −2 at a magnetic field of 1.6 × 10 −4 T at 60 Hz.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric energy harvesting from AC current-carrying wire

Yoshimura

Izumi

Ueno³

et al. 2019

Jpn. J. Appl. Phys.

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The magnetic field surrounding an AC current-carrying wire is a promising source for energy harvesting. In this study, an AC magnetic field energy harvester is developed based on the piezoelectric vibration energy harvester. A permanent magnet placed near the AC current-carrying wire vibrates by coupling with the AC magnetic field. The kinetic energy of the vibration can be converted by the piezoelectric effect. Theoretical analysis indicates that the harvester composed of a piezoelectric cantilever with a permanent magnet at the free end should be placed so that the magnet and the wire do not collide. Then, the harvester was fabricated using a piezoelectric bimorph cantilever with a mechanical quality factor of 66 and a generalized electromechanical coupling factor (K 2 ) of 3.1% and a neodymium magnet with a mass of 3.1 g. At an AC current of 5 A rms with a frequency of 50 Hz, an output of 1.3 mW was obtained.

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