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Voltage generation in piezoelectric energy harvesting with magnet: FEA simulation and experimental analysis

Jaafar, Muhammad Imran and Rabah, Hossameldin M.M.M. and Nordin, Nor Hidayati Diyana and Abdul Muthalif, Asan Gani and Wahid, Azni Nabela (2021) Voltage generation in piezoelectric energy harvesting with magnet: FEA simulation and experimental analysis. Journal of Science and Technology, 13 (2). pp. 17-24. ISSN 2229-8460 E-ISSN 2600-7924

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Energy harvesting devices are needed as an alternative to batteries as it is costly to power up wireless sensor network. However, the power generated and operating bandwidth for the typical energy harvester are still compromised. Therefore, in this work, the use of permanent magnet in Piezoelectric Energy Harvester (PEH) is proposed to increase the operating bandwidth. A simulation study was conducted using COMSOL Multiphysics software to observe the effect of mechanical tuning using magnet on the voltage produced. It shows that PEH with oscillating magnetic field is capable of reaching generated peak power of 0.775 mW and increase the operating bandwidth by 10%. Experimental setup was also fabricated to further validate the observation at different polarities and varying distances with permanent magnets. It is observed that while the peak power achieved in the attractive mode is smaller as compared to its counterpart, however, its bandwidth is larger.

Item Type: Article (Journal)
Additional Information: 8572/96077
Uncontrolled Keywords: piezoelectric energy harvesting, COMSOL, operating bandwidth, PEH with magnet, frequency tuning
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA329 Engineering mathematics. Engineering analysis
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Mechatronics Engineering
Date Deposited: 05 Jan 2022 17:05
Last Modified: 05 Jan 2022 17:05
URI: http://irep.iium.edu.my/id/eprint/96077

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