Micro energy harvesting via piezoelectric and electromagnetic dynamics for higher power output

Mohd Tahir, Mohamad Safiddin and Wahid, Azni Nabela and Mohamad Hanif, Noor Hazrin Hany and Janin, Zuriati (2023) Micro energy harvesting via piezoelectric and electromagnetic dynamics for higher power output. In: ICSIMA 2023 The 9th IEEE International Conference on Smart Instrumentation, Measurement and Applications 2023, 17-18 October 2023, Kuala Lumpur, Malaysia.

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Abstract

Micro enery harvesting is a promising technology for powering small-scale electronic devices using ambient sources which are normally vibrating at low frequencies. Limitations arise when relying solely on a single energy conversion mechanism, such as the exclusive use of piezoelectric beams. Piezoelectric beams excel at high-frequency energy conversion, leaving low-frequency vibrations untapped. To address this issue, a hybrid energy harvester integrating both piezoelectric beams and magnetic coils emerges as a solution to complement the capability of a piezoelectric harvester. In this work, a copper wound coil is added to an energy harvester assembly that consist of a piezoelectric beam, an eccentric mass and NdFeB permanent magnets that act as proof mass. Each time the eccentric mass passes the beam, the magnets at a fixed distance, repel each other. This simultaneously change magnetic flux around the wound copper coil to generate a larger amount of current. This proposed hybrid configuration produced the highest energy output as compared to the piezoelectric only or electromagnetic only energy harvester, when subjected to a 5 Hz vibration input. This research demonstrated the ability of the hybrid energy harvester to produce electrical power at a low frequency input, which provides optimistic possibility to cater for the energy demand for wearable electronic and wireless devices.

Item Type:	Proceeding Paper (Slide Presentation)
Uncontrolled Keywords:	hybrid energy harvester, piezoelectric, electromagnetic, micro energy, low-frequency input
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechatronics Engineering
Depositing User:	DR Noor Hazrin Hany Mohamad Hanif
Date Deposited:	19 Jan 2024 16:46
Last Modified:	13 Jul 2024 16:05
URI:	http://irep.iium.edu.my/id/eprint/110315

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