Reliability‐based hull geometry optimisation of a point‐absorber wave energy converter with power take‐off structural reliability objectives
Abstract Recent studies have focused on optimising wave energy converter (WEC) designs, maximising their power performance and techno‐economic feasibility. Reliability has yet to be fully considered in these formulations, despite its impact on cost and performance. In this study, this gap is address...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-10-01
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| Series: | IET Renewable Power Generation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/rpg2.12249 |
| _version_ | 1798031633849253888 |
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| author | Anna Garcia‐Teruel Caitlyn E. Clark |
| author_facet | Anna Garcia‐Teruel Caitlyn E. Clark |
| author_sort | Anna Garcia‐Teruel |
| collection | DOAJ |
| description | Abstract Recent studies have focused on optimising wave energy converter (WEC) designs, maximising their power performance and techno‐economic feasibility. Reliability has yet to be fully considered in these formulations, despite its impact on cost and performance. In this study, this gap is addressed by developing a reliability‐based design optimisation framework for WEC hull geometries to explore the trade‐off between power performance and power take‐off (PTO) system damage equivalent loading (DEL). Optimised hull geometries for two sites are considered (from the centre of the North Sea and off the west coast of Norway), and two directions of motions (heave and surge). Results indicate that site characteristics affect the potential power production and DEL for an optimal WEC design. These are also affected by the direction of motion for power extraction, which also significantly changes optimal hull shape characteristics. Optimal surging WEC designs have edges facing oncoming wave directions, while heaving WECs have pointed bottoms, both to streamline movement. Larger, more convex WECs result in greater power production and DEL, while smaller, more concave WECs result in lesser power production and DEL. These findings underline the importance of considering WEC hull geometry in early design processes to optimise cost, power production, and reliability. |
| first_indexed | 2024-04-11T19:59:34Z |
| format | Article |
| id | doaj.art-d36f02c108004dc6b9552bfe6e972a0c |
| institution | Directory Open Access Journal |
| issn | 1752-1416 1752-1424 |
| language | English |
| last_indexed | 2024-04-11T19:59:34Z |
| publishDate | 2021-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Renewable Power Generation |
| spelling | doaj.art-d36f02c108004dc6b9552bfe6e972a0c2022-12-22T04:05:41ZengWileyIET Renewable Power Generation1752-14161752-14242021-10-0115143255326810.1049/rpg2.12249Reliability‐based hull geometry optimisation of a point‐absorber wave energy converter with power take‐off structural reliability objectivesAnna Garcia‐Teruel0Caitlyn E. Clark1Institute for Energy Systems School of Engineering The University of Edinburgh Edinburgh UKNational Renewable Energy Laboratory Golden Colorado USAAbstract Recent studies have focused on optimising wave energy converter (WEC) designs, maximising their power performance and techno‐economic feasibility. Reliability has yet to be fully considered in these formulations, despite its impact on cost and performance. In this study, this gap is addressed by developing a reliability‐based design optimisation framework for WEC hull geometries to explore the trade‐off between power performance and power take‐off (PTO) system damage equivalent loading (DEL). Optimised hull geometries for two sites are considered (from the centre of the North Sea and off the west coast of Norway), and two directions of motions (heave and surge). Results indicate that site characteristics affect the potential power production and DEL for an optimal WEC design. These are also affected by the direction of motion for power extraction, which also significantly changes optimal hull shape characteristics. Optimal surging WEC designs have edges facing oncoming wave directions, while heaving WECs have pointed bottoms, both to streamline movement. Larger, more convex WECs result in greater power production and DEL, while smaller, more concave WECs result in lesser power production and DEL. These findings underline the importance of considering WEC hull geometry in early design processes to optimise cost, power production, and reliability.https://doi.org/10.1049/rpg2.12249Tidal and flow energyProject and design engineeringReliabilityOptimisation techniquesWave powerOptimisation |
| spellingShingle | Anna Garcia‐Teruel Caitlyn E. Clark Reliability‐based hull geometry optimisation of a point‐absorber wave energy converter with power take‐off structural reliability objectives IET Renewable Power Generation Tidal and flow energy Project and design engineering Reliability Optimisation techniques Wave power Optimisation |
| title | Reliability‐based hull geometry optimisation of a point‐absorber wave energy converter with power take‐off structural reliability objectives |
| title_full | Reliability‐based hull geometry optimisation of a point‐absorber wave energy converter with power take‐off structural reliability objectives |
| title_fullStr | Reliability‐based hull geometry optimisation of a point‐absorber wave energy converter with power take‐off structural reliability objectives |
| title_full_unstemmed | Reliability‐based hull geometry optimisation of a point‐absorber wave energy converter with power take‐off structural reliability objectives |
| title_short | Reliability‐based hull geometry optimisation of a point‐absorber wave energy converter with power take‐off structural reliability objectives |
| title_sort | reliability based hull geometry optimisation of a point absorber wave energy converter with power take off structural reliability objectives |
| topic | Tidal and flow energy Project and design engineering Reliability Optimisation techniques Wave power Optimisation |
| url | https://doi.org/10.1049/rpg2.12249 |
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