Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.8
3.9
Journals
Sustainability
Special Issues
Advances in Power Take-Off Systems for the Future Wave Energy...
sustainability-logo
Submit to Sustainability Review for Sustainability Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Advances in Power Take-Off Systems for the Future Wave Energy Conversion

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Energy Sustainability".

Deadline for manuscript submissions: closed (20 May 2023) | Viewed by 7413

Special Issue Editors

Dr. Marcos Lafoz

E-Mail Website1 Website2
Guest Editor
Technology Department Av. de la Complutense, Energy, Environmental and Technological Research Center, CIEMAT Electrical Engineering Division, 22, 28040 Madrid, Spain
Interests: power electronics; inverters; power converters; wave energy; electric drives; switched reluctance motors; energy storage; electric vehicles; electric machines; flywheels; supercapacitors; energy storage dimensioning
Dr. Marcos Blanco

E-Mail Website
Guest Editor
CIEMAT, Government of Spain, 28040 Madrid, Spain
Interests: electrical drives dimensioning and control; renewable energy generation (wave energy); electric energy storage aplications (grid integration, dimensioning)

Special Issue Information

Dear Colleagues:

The concept of power take-off (PTO) in the topic of wave energy conversion (WEC) is considered as the group of elements in charge of transforming the mechanical energy captured from the waves into electricity delivered into the electric grid. It comprises different technologies: mechanical adaptation, such as gearboxes, electric generators, power electronics and even control systems, which could be also considered as part of the PTO. Advanced development of PTOs can increase the efficiency, reliability, sustainability and survivability of WECs, as well as its performance, resulting in a reduction of the LCOE and a higher benefit in terms of annual energy captured. Other important impacts are expected from the development of PTOs, such as reduction of failures and fatigue on components, reduction of unplanned maintenance and reinforcement of the supply chain.

The topics included in this special issue will be: development of PTO technology; demonstration of new PTO performance; improvement of PTO control strategies; onshore testing previous to final commissioning; optimization of PTO design; PTO standardization; scalability and modularity of PTOs; validation of wave-to-wire models; demonstration of grid-compliance power, including short-term energy storage solutions to smooth power output

Dr. Marcos Lafoz
Dr. Marcos Blanco
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • power take-off (PTO)
  • wave energy conversion (WEC)
  • renewable energy
  • energy sustainability
  • short-term energy storage solutions

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

18 pages, 5908 KiB  
Article
Study of a New Wave Energy Converter with Perturb and Observe Maximum Power Point Tracking Method
by José Carlos Ugaz Peña, Christian Luis Medina Rodríguez and Gustavo O. Guarniz Avalos
Sustainability 2023, 15(13), 10447; https://0-doi-org.brum.beds.ac.uk/10.3390/su151310447 - 3 Jul 2023
Cited by 2 | Viewed by 1650
Abstract
Ocean waves contain the highest energy density among renewable energy sources. However, harnessing the energy from ocean waves represents a challenge because wave energy converters (WECs) must be designed to have great survivability and efficiency. The power production challenge of any WEC depends [...] Read more.
Ocean waves contain the highest energy density among renewable energy sources. However, harnessing the energy from ocean waves represents a challenge because wave energy converters (WECs) must be designed to have great survivability and efficiency. The power production challenge of any WEC depends on the power take-off (PTO) system efficiency. Maximum power point tracking (MPPT) algorithms have been widely applied in renewable energy from photovoltaic and wind sources, and have subsequently been adapted to wave energy converters (WECs). Energy extraction is optimized by applying MPPT, resulting in an increase in efficiency. This study aims to address the analysis of the influence of the perturb and observe MPPT in the electrical power performance of a WEC composed of a point absorber, a hinged arm and a direct mechanical drive PTO system. The PTO is characterized by a pulley system, a counterweight, one-way bearings, a gearbox, a flywheel and an electric generator; in the present study it is considered to be a cylindrical point absorber. The linear theory and the viscous damping effect are applied to analyze the hydrodynamic behavior of the point absorber. Regarding the two generators considered in the present study, the contribution of MPPT is greater for the low power generator; the high values of the capture width ratio (CWR) occur at low values of period and wave height, showing the maximum value in the high-power generator. Full article
(This article belongs to the Special Issue Advances in Power Take-Off Systems for the Future Wave Energy Conversion)
►▼ Show Figures

Figure 1

20 pages, 4997 KiB  
Article
Effective Mooring Rope Tension in Mechanical and Hydraulic Power Take-Off of Wave Energy Converter
by Ji Woo Nam, Yong Jun Sung and Seong Wook Cho
Sustainability 2021, 13(17), 9803; https://0-doi-org.brum.beds.ac.uk/10.3390/su13179803 - 31 Aug 2021
Cited by 3 | Viewed by 2021
Abstract
The InWave wave energy converter (WEC), which is three-tether WEC type, absorbs wave energy via moored cylindrical buoys with three ropes connected to a terrestrial power take-off (PTO) through a subsea pulley. In this study, a simulation study was conducted to select a [...] Read more.
The InWave wave energy converter (WEC), which is three-tether WEC type, absorbs wave energy via moored cylindrical buoys with three ropes connected to a terrestrial power take-off (PTO) through a subsea pulley. In this study, a simulation study was conducted to select a suitable PTO when designing a three-tether WEC. The mechanical PTO transfers energy from the buoy to the generator using a gearbox, whereas the hydraulic PTO uses a hydraulic pump, an accumulator, and a hydraulic motor to convert mechanical energy into electrical energy. The hydraulic PTO has a lower energy conversion efficiency than that of the mechanical PTO owing to losses resulting from pipe friction and the individual efficiencies of the hydraulic pumps and motors. However, the efficiencies mentioned above are not the efficiency of the whole system. The efficiency of the whole system should be analyzed considering the tension of the rope and the efficiency of the generator. In this study, the energy conversion efficiencies of the InWave WEC installed the mechanical and hydraulic PTO devices are compared, and their behaviors are analyzed through numerical simulations. The mechanics of mechanical and hydraulic PTO applied to InWave are mathematically expressed, and the issues of the elements constituting the PTO are explained. Finally, factors to consider for PTO selection are presented. Full article
(This article belongs to the Special Issue Advances in Power Take-Off Systems for the Future Wave Energy Conversion)
►▼ Show Figures

Figure 1

15 pages, 2459 KiB  
Article
MPPT of Permanent Magnet Synchronous Generator in Tidal Energy Systems Using Support Vector Regression
by Ahmed G. Abo-Khalil and Ali S. Alghamdi
Sustainability 2021, 13(4), 2223; https://0-doi-org.brum.beds.ac.uk/10.3390/su13042223 - 19 Feb 2021
Cited by 10 | Viewed by 2893
Abstract
In this paper, an improved Maximum Power Point Tracking (MPPT) algorithm for a tidal power generation system using a Support Vector Regression (SVR) is proposed. To perform this MPPT, a tidal current speed sensor is needed to track the maximum power. The use [...] Read more.
In this paper, an improved Maximum Power Point Tracking (MPPT) algorithm for a tidal power generation system using a Support Vector Regression (SVR) is proposed. To perform this MPPT, a tidal current speed sensor is needed to track the maximum power. The use of these sensors has a lack of reliability, requires maintenance, and has a disadvantage in terms of price. Therefore, there is a need for a sensorless MPPT control algorithm that does not require information on tidal current speed and rotation speed that improves these shortcomings. Sensorless MPPT control methods, such as SVR, enables the maximum power to be output by comparing the relationship between the output power and the rotational speed of the generator. The performance of the SVR is influenced by the selection of its parameters which is optimized during the offline training stage. SVR has a strength and better response than the neural network since it ensures the global minimum and avoids being stuck at local minima. This paper proposes a high-efficiency grid-connected tidal current generation system with a permanent magnet synchronous generator back-to-back converter. The proposed algorithm is verified experimentally and the results confirm the excellent control characteristics of the proposed algorithm. Full article
(This article belongs to the Special Issue Advances in Power Take-Off Systems for the Future Wave Energy Conversion)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop