Next Article in Journal
Thermal Performance Evaluation of Two Thermal Energy Storage Tank Design Concepts for Use with a Solid Particle Receiver-Based Solar Power Tower
Previous Article in Journal
Numerical and Theoretical Investigations Concerning the Continuous-Surface-Curvature Effect in Compressor Blades
Article Menu

Export Article

Open AccessArticle
Energies 2014, 7(12), 8178-8200; doi:10.3390/en7128178

Reliability-Based Structural Optimization of Wave Energy Converters

1
Department of Civil Engineering, Aalborg University, Sofiendalsvej 11, 9200 Aalborg SV, Denmark
2
Wavestar, Park Allé, 2605 Brøndby, Denmark
*
Author to whom correspondence should be addressed.
Received: 27 October 2014 / Revised: 24 November 2014 / Accepted: 26 November 2014 / Published: 9 December 2014
View Full-Text   |   Download PDF [2173 KB, uploaded 17 March 2015]   |  

Abstract

More and more wave energy converter (WEC) concepts are reaching prototypelevel. Once the prototype level is reached, the next step in order to further decrease thelevelized cost of energy (LCOE) is optimizing the overall system with a focus on structuraland maintenance (inspection) costs, as well as on the harvested power from the waves.The target of a fully-developed WEC technology is not maximizing its power output,but minimizing the resulting LCOE. This paper presents a methodology to optimize thestructural design of WECs based on a reliability-based optimization problem and the intentto maximize the investor’s benefits by maximizing the difference between income (e.g., fromselling electricity) and the expected expenses (e.g., structural building costs or failure costs).Furthermore, different development levels, like prototype or commercial devices, may havedifferent main objectives and will be located at different locations, as well as receive varioussubsidies. These points should be accounted for when performing structural optimizationsof WECs. An illustrative example on the gravity-based foundation of the Wavestar deviceis performed showing how structural design can be optimized taking target reliability levelsand different structural failure modes due to extreme loads into account. View Full-Text
Keywords: LCOE; probabilistic reliability analysis; reliability level; reliability-basedoptimization; wave energy; WEC; Wavestar LCOE; probabilistic reliability analysis; reliability level; reliability-basedoptimization; wave energy; WEC; Wavestar
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Ambühl, S.; Kramer, M.; Sørensen, J.D. Reliability-Based Structural Optimization of Wave Energy Converters. Energies 2014, 7, 8178-8200.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top