1. Repositório Aberto da Universidade do Porto
2. FEUP - Faculdade de Engenharia
3. FEUP - Dissertação

Author(s):	Ricardo Das Neves Esteves
Title:	Design of a power harvesting system using TENGs
Issue Date:	2019-07-11
Description:	In line with the vital role of the oceans regarding climate action, environment, and raw materials, there is a need to monitor a set of physical parameters of the ocean and track migrations and changes in the behaviors of species. The use of autonomous underwater vehicles (AUVs) capable of transporting a multitude of sensors, and covering wide areas in remote oceanic locations, constitutes an affordable option to collect the essential data to enable economically viable large scale ocean monitoring. However, AUV use is mainly limited by the duration of the energy source charge. There is thus a need for an energy solution that can support the operation of AUVs within remote oceanic or coastal locations for long periods of time. The triboelectric nanogenerator (TENG) is an emerging energy harvesting technology that can be used to support the energy needs of AUVs, and ensure the continuous monitoring of environmental and human activities in remote oceanic locations. It could also be used in large-scale harvesting providing a new strategy for wave energy conversion, as an alternative to existent wave farms, based in electromagnetic generators (EMG), which are inefficient at low-frequency agitations and bring several technical problems. TENGs are currently gaining momentum as a very promis- ing technology, harvesting mechanical energy from various sources, such as mechanical vibration, rotation, wind, human walking, water waves and tides. In this dissertation project, a TENG design for mechanical energy harvesting in marine applications has been developed. The proposed TENG is based on printed-circuit board(PCB) electrodes with a dielectric layer deposited on top and freestanding spheres. Experimental evaluation and optimzation of TENG has been studied. Also a power module management will be implemented for guarante the best load condition and satisfied the power requeriments of small electronic devices.
Subject:	Engenharia electrotécnica, electrónica e informática Electrical engineering, Electronic engineering, Information engineering
Scientific areas:	Ciências da engenharia e tecnologias::Engenharia electrotécnica, electrónica e informática Engineering and technology::Electrical engineering, Electronic engineering, Information engineering
DOI:	10.34626/rp6p-3v20
TID identifier:	202397190
URI:	https://hdl.handle.net/10216/122033
Document Type:	Dissertação
Rights:	openAccess
Appears in Collections:	FEUP - Dissertação

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