• Dhanraj B. Chavhan
• R. G. Todkar
• S. G. Joshi

This paper presents the design of vibration based piezoelectric and electromagnetic dual mode energy harvester. The energy harvester consists of a cantilever beam with the Neodymium Iron Boron (NdFeB)magnets at some distance from free end and piezoelectric disc at the fixed end. Using this system, the mechanical vibration of different frequencies at different amplitudes is given to the beam. The piezoelectric disc at fixed end, while the electromagnetic induction principle at the free end is used to convert the mechanical vibrations into electricity. The expressions for piezoelectric and electromagnetic harvesting power with the physical characteristics of the beam are derived for electrical power and validated experimentally. The energy under the first resonant natural frequency of 28 Hz is harvested. The maximum voltage and the power at the first resonant frequency for 2 mm exciting vibration are 0.164 V and 4.8 mW. This amount of power is sufficient to provide power for typical wireless sensors such as accelerometers and strain gauges.

Piezoelectric, electromagnetic induction, dual mode energy harvester, cantilever beam

"Design, Development and Testing of a Vibration Based Piezoelectric and Electromagnetic Dual Mode Energy Harvester", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.381-386, June-2019, Available :http://www.jetir.org/papers/JETIR1906C62.pdf

"Design, Development and Testing of a Vibration Based Piezoelectric and Electromagnetic Dual Mode Energy Harvester", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp381-386, June-2019, Available at : http://www.jetir.org/papers/JETIR1906C62.pdf