Optimized Electromagnetic Harvester with a Non-Magnetic Inertial Mass

Date

2015-09-09

Author

Ulusan, Hasan
Yasar, Oguz
Zorlu, Ozge
Külah, Haluk

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This paper presents an optimization study to decrease the operation frequency and increase the output power of a miniature electromagnetic (EM) energy harvester, by incorporating a non-magnetic inertial mass together with the moving magnet. The harvester coil position has been optimized through FEM, and validated through tests. Experimental studies on the inertial mass showed that increasing the magnet size further increases the resonance frequency due to the increased magnetic forces. Conversely, using a non-magnetic mass over the magnet effectively decreases the resonance frequency (27 Hz to 15 Hz), and increases the generated output power. The power output during operation at even lower frequencies is also improved by adding the non-magnetic mass. The optimized 6 cm3 harvester generates 0.45 Vrms and 110 μWrms output power at 15 Hz and 0.7 g peak acceleration.

Subject Keywords

Energy harvesting, Vibration-based energy harvesting, Electromagnetic energy harvester, Optimized energy harvester, Energy harvester modeling

URI

https://hdl.handle.net/11511/43995

DOI

https://doi.org/10.1016/j.proeng.2015.08.629

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

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Citation Formats

H. Ulusan, O. Yasar, O. Zorlu, and H. Külah, “Optimized Electromagnetic Harvester with a Non-Magnetic Inertial Mass,” 2015, vol. 120, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43995.