Efficiency Enhancement of a Disc-Shaped Triboelectric Energy Harvester with a Magnetic Bistable Mechanism

Zhao, H ORCID: 0000-0002-4438-7791 and Ouyang, H ORCID: 0000-0003-0312-0326 (2022) Efficiency Enhancement of a Disc-Shaped Triboelectric Energy Harvester with a Magnetic Bistable Mechanism. In: The International Conference on Applied Nonlinear Dynamics, Vibration and Control, 2021-8-23 - 2021-8-25, Hong Kong.

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Abstract

Disc-shaped triboelectric energy harvesters can harvest kinetic energy from two kinds of sources: continuous rotation and vibration. A majority of studies about disc-shaped triboelectric energy harvesters focus on scavenging energy in continuous rotation, and only several of them deal with vibration energy. In this work, a new disc-shaped triboelectric energy harvester consisting of a stationary disc, a rotating disc having an eccentric mass with a magnet, and a separate magnet fixed to the harvester base is developed. The pair of repulsive magnets are utilized for the first time in a disc-shaped triboelectric energy harvester for efficiency enhancement. One of the discs is covered with a metal film and the other one is covered with a metal films on top of a dielectric film. Several alternating sectors of equal size are cut away from each piece of film. A comprehensive theoretical model coupling both structural dynamic and electric dynamic domains is established. Numerical simulations are carried out to investigate the effect of the potential well due to the two magnets on both structural and electrical behaviours, basins of attractors and the influence of the number of sectors. The results indicate that the magnetic bistable mechanism is able to enhance the power of the harvester considerably, compared with conventional disc-shaped triboelectric harvesters without bistable mechanism. Additionally, increasing the number of sectors also improves the output efficiency of the harvester.

Item Type:	Conference or Workshop Item (Unspecified)
Uncontrolled Keywords:	7 Affordable and Clean Energy
Divisions:	Faculty of Science and Engineering > School of Engineering
Depositing User:	Symplectic Admin
Date Deposited:	21 Oct 2021 07:22
Last Modified:	15 Mar 2024 05:42
DOI:	10.1007/978-981-16-5912-6_10
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3141061