Design and Analysis of a Vibration-Based Magnetoelectric Energy Harvesting Device

Abstract:

An energy harvester is presented to harvest ambient vibration energy using a cantilever beam and multiple Terfenol-D/PMN-PT/Terfenol-D laminate magnetoelectric transducers. The harvester uses eight magnets to make up a magnetic circuit arranged on the free end of the cantilever beam. The magnetic circuit can produce a high gradient magnetic field space. The multiple transducers are placed at the high magnetic field gradient position to make the best use of the magnetic field produced by the magnets. The nonlinear vibration and electrical-output performances of the harvester at resonance are analyzed. The theoretical results indicate that the prototype can produce a load power of 7.619 mW, which is sufficient to supply low consumption wireless sensor nodes.

• Periodical: Advanced Materials Research (Volume 722)
• Pages: 75-80
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.722.75
• Online since: July 2013
• Authors: Zhang Zhang, Xian Zhi Dai, Yong Wang
• Keywords: Energy Harvesting, Magnetoelectric Effect, Magnetostrictive, Piezoelectric Laminate Composite, Vibration Harvester

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