Experimental Performance Analysis of a Hybrid Wave Energy Harvesting System Combining E-Motions with Triboelectric Nanogenerators

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022-12-15

Autores

Daniel Clemente (Autor) FEUP; Cátia Rodrigues (Autor) Outra; Ricardo Esteves (Autor) Outra; José Correia (Autor) Outra; pereira, a. m. (Autor) FCUP; ventura, j. (Autor) FCUP; Paulo Rosa Santos (Autor) FEUP; Francisco Taveira Pinto (Autor) FEUP; Paulo Martins (Autor) Outra

Revista

Título: Journal of Marine Science and Engineering

Vol. 13

Páginas: 1-1924

Editora: MDPI

Indexação

ISI Web of Knowledge - 1 Citação

ISI Web of Science

Scopus - 1 Citação

Classificação Científica

CORDIS: Ciências Tecnológicas

FOS: Ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-00X-J7Q

DOI: 10.3390/jmse10121924

Abstract (EN): This paper discusses a disruptive approach to wave energy conversion, based on a hybrid solution: the E-Motions wave energy converter with integrated triboelectric nanogenerators. To demonstrate it, a physical modelling study was carried out with nine E-Motions sub-variants, which were based on three original hull designs (half-cylinder (HC), half-sphere (HS) and trapezoidal prism (TP)). A unidirectional lateral tribo-device was incorporated within the E-Motions' hull during the experiments. The physical models were subjected to eight irregular sea-states from a reference study on the Portuguese coastline. Results point towards a significant hydrodynamic roll response, with peaks of up to 40 degrees/m. Three peaks were observed for the surge motions, associated with slow drifting at low frequencies. The response bandwidth of the HC sub-variants was affected by the varying PTO mass-damping values. By comparison, such response was generally maintained for all HS sub-variants and improved for the TP sub-variants, due to ballast positioning adjustments. Maximum power ratios ranged between 0.015 kW/m(3) and 0.030 kW/m(3). The TENGs demonstrated an average open-circuit voltage and power per kilogram ratio of up to 85 V and 18 mW/kg, respectively, whilst exhibiting an evolution highly dependent upon wave excitation, surge excursions and roll oscillations. Thus, TENGs enable redundant dual-mode wave energy conversion alongside E-Motions, which can power supporting equipment with negligible influence on platform hydrodynamics.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 26