scholarly journals Modeling and analysis of a sea wave energy converter

Author(s):  
Isaac R. Machado ◽  
Edson H. Watanabe ◽  
Paula B. Garcia-Rosa
2021 ◽  
Author(s):  
Anatoliy Raschepkin ◽  
Igor Kondratenko ◽  
Oleksiy Karlov ◽  
Roman Kryshchuk

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Maycon Da Silveira Paiva ◽  
Leonardo Da Silva Silveira ◽  
Liércio André Isoldi ◽  
Bianca Neves Machado

The present study aims to analyze the state of the art of scientific studies about the Overtopping device used to convert sea wave energy into electrical energy, by means the Bibliometric Methodology. The development of this study took place through the selection of articles from conference proceedings, as well as national and international journals. The Bibliometric methodology consists of a statistical tool that allows quantifying the measurement of production indexes. Using selected keywords, it was conducted a survey of studies in the online databases of Science Direct, SciELO and Google Scholar. The works found then went through a filtering process, in order to limit the bibliometric study only to studies about Overtopping devices as sea wave energy converter. Finally, the investigation of these selected articles was carried out under the optics of production and authorship study, content study and study of bibliographic references. Where it was identified growth in publications related to the topic, methodologies used and, among other indicators, the authors most cited in the analyzed articles. The predominant keywords used were “Wave Energy Converter” and “Overtopping”. It was noted that Brazilian universities are leaders in the productivity, presenting more than 36% of the scientific production regarding Overtopping WECs.


2021 ◽  
Vol 229 ◽  
pp. 108879
Author(s):  
Kaustubh Khedkar ◽  
Nishant Nangia ◽  
Ramakrishnan Thirumalaisamy ◽  
Amneet Pal Singh Bhalla

Author(s):  
Andrew S. Zurkinden ◽  
Lars Damkilde ◽  
Zhen Gao ◽  
Torgeir Moan

This paper deals with structural modeling and analysis of a wave energy converter. The device, called Wavestar, is a bottom fixed structure, located in a shallow water environment at the Danish Northwest coast. The analysis is concentrated on a single float and its structural arm which connects the WEC to a jackup structure. The wave energy converter is characterized by having an operational and survival mode. The survival mode drastically reduces the exposure to waves and therfore to the wave loads. Structural response analysis of the Wavestar arm is carried out in this study. Due to the relative stiff behavior of the arm the calculation can be reduced to a quasi-static analysis. The hydrodynamic and the structural analyses are thus performed separately. In order to reduce the computational time of the finite element calculation the main structure is modeled as a superelement. The structural detail, where the stress analysis is carried out, is connected with the superstructure by interface nodes. The analysis is conducted for two different control situations. Numerical results will be presented which can be further used to carry out fatigue analysis in which a more refined FE model is required to obtain the stress concentration factors.


Author(s):  
Andrew F. Davis ◽  
Jim Thomson ◽  
Tim R. Mundon ◽  
Brian C. Fabien

This paper illustrates an approach to the modeling of a point absorbing Wave Energy Converter (WEC) with the intent of analyzing the sensitivity of the system response to variation in the model parameters. Using first principles, the nonlinear equations of motion are formed to describe the heave motion of a 3 body system. A linearized model is developed and used to simulate the system in both the time and frequency domains. The input to the model is a time series displacement and a time series velocity that describes the incident waves. A sensitivity analysis is then performed on the system parameters to show how the characteristics of the heave plate, the component masses, and the mass of the entrained fluid affect the performance of the system. The model is validated by numerically modeling a generation 1 device produced by Oscilla Power Inc., which is compared against experimental data from a field test on Lake Washington. The WEC is designed to provide tension along a series of tethers with connected power take off units. The wave input is specified using frequency spectra measured with a nearby Datawell Waverider MK III buoy during the field testing, from which time domain waves are reconstructed.


Sign in / Sign up

Export Citation Format

Share Document