Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies
Point absorber wave energy converters (WEC) are subjected to random wave loads. In addition, the power production of a WEC and the motions are considerably influenced by the applied control mechanism. For small waves, with a wave period close to the natural period of the oscillating system, the powe...
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American Society of Mechanical Engineers
2013
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ftalborgunivpubl:oai:pure.atira.dk:publications/93c9d473-22a7-4e67-8bc2-69f4c8e38e04 2024-09-15T17:50:32+00:00 Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies Zurkinden, Andrew Stephen Lambertsen, Søren Heide Damkilde, Lars Gao, Zhen Moan, Torgeir 2013 https://vbn.aau.dk/da/publications/93c9d473-22a7-4e67-8bc2-69f4c8e38e04 https://doi.org/10.1115/OMAE2013-10864 eng eng American Society of Mechanical Engineers https://vbn.aau.dk/da/publications/93c9d473-22a7-4e67-8bc2-69f4c8e38e04 urn:ISBN:978-0-7918-5542-3 info:eu-repo/semantics/closedAccess Zurkinden , A S , Lambertsen , S H , Damkilde , L , Gao , Z & Moan , T 2013 , Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies . in ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering : Ocean Renewable Energy . vol. 8 , American Society of Mechanical Engineers , ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering , Nantes , France , 09/06/2013 . https://doi.org/10.1115/OMAE2013-10864 Fatigue Analysis Wave Energy Converter Control Strategies contributionToPeriodical 2013 ftalborgunivpubl https://doi.org/10.1115/OMAE2013-10864 2024-09-05T14:36:14Z Point absorber wave energy converters (WEC) are subjected to random wave loads. In addition, the power production of a WEC and the motions are considerably influenced by the applied control mechanism. For small waves, with a wave period close to the natural period of the oscillating system, the power output may be controlled passively by means of a constant damping coefficient. The energy is extracted proportionally to the square of the body′s velocity. If the wave period is away from the natural period, reactive power may be applied in order to enlarge the resonance bandwidth. Recent studies on a point absorber have shown that the stresses at a particular section of the structure depend on the control parameters. The power is increased by choosing a more advanced control mechanism. The consequences are that the stress amplitudes are higher than for the more conservative control case. In this study, the focus is given on the fatigue damage calculation of a structural detail by taking into account the control parameters of the power take-off system. The predicted fatigue damage is calculated based on the spectral approach. Finally the question will be answered which control strategy is more favorable regarding the trade off between the fatigue damage and power production of the wave energy device. Point absorber wave energy converters (WEC) are subjected to random wave loads. In addition, the power production of a WEC and the motions are considerably influenced by the applied control mechanism. For small waves, with a wave period close to the natural period of the oscillating system, the power output may be controlled passively by means of a constant damping coefficient. The energy is extracted proportionally to the square of the body′s velocity. If the wave period is away from the natural period, reactive power may be applied in order to enlarge the resonance bandwidth. Recent studies on a point absorber have shown that the stresses at a particular section of the structure depend on the control parameters. The ... Article in Journal/Newspaper Arctic Aalborg University's Research Portal Volume 8: Ocean Renewable Energy |
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Aalborg University's Research Portal |
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English |
topic |
Fatigue Analysis Wave Energy Converter Control Strategies |
spellingShingle |
Fatigue Analysis Wave Energy Converter Control Strategies Zurkinden, Andrew Stephen Lambertsen, Søren Heide Damkilde, Lars Gao, Zhen Moan, Torgeir Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies |
topic_facet |
Fatigue Analysis Wave Energy Converter Control Strategies |
description |
Point absorber wave energy converters (WEC) are subjected to random wave loads. In addition, the power production of a WEC and the motions are considerably influenced by the applied control mechanism. For small waves, with a wave period close to the natural period of the oscillating system, the power output may be controlled passively by means of a constant damping coefficient. The energy is extracted proportionally to the square of the body′s velocity. If the wave period is away from the natural period, reactive power may be applied in order to enlarge the resonance bandwidth. Recent studies on a point absorber have shown that the stresses at a particular section of the structure depend on the control parameters. The power is increased by choosing a more advanced control mechanism. The consequences are that the stress amplitudes are higher than for the more conservative control case. In this study, the focus is given on the fatigue damage calculation of a structural detail by taking into account the control parameters of the power take-off system. The predicted fatigue damage is calculated based on the spectral approach. Finally the question will be answered which control strategy is more favorable regarding the trade off between the fatigue damage and power production of the wave energy device. Point absorber wave energy converters (WEC) are subjected to random wave loads. In addition, the power production of a WEC and the motions are considerably influenced by the applied control mechanism. For small waves, with a wave period close to the natural period of the oscillating system, the power output may be controlled passively by means of a constant damping coefficient. The energy is extracted proportionally to the square of the body′s velocity. If the wave period is away from the natural period, reactive power may be applied in order to enlarge the resonance bandwidth. Recent studies on a point absorber have shown that the stresses at a particular section of the structure depend on the control parameters. The ... |
format |
Article in Journal/Newspaper |
author |
Zurkinden, Andrew Stephen Lambertsen, Søren Heide Damkilde, Lars Gao, Zhen Moan, Torgeir |
author_facet |
Zurkinden, Andrew Stephen Lambertsen, Søren Heide Damkilde, Lars Gao, Zhen Moan, Torgeir |
author_sort |
Zurkinden, Andrew Stephen |
title |
Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies |
title_short |
Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies |
title_full |
Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies |
title_fullStr |
Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies |
title_full_unstemmed |
Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies |
title_sort |
fatigue analysis of a wave energy converter taking into account different control strategies |
publisher |
American Society of Mechanical Engineers |
publishDate |
2013 |
url |
https://vbn.aau.dk/da/publications/93c9d473-22a7-4e67-8bc2-69f4c8e38e04 https://doi.org/10.1115/OMAE2013-10864 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Zurkinden , A S , Lambertsen , S H , Damkilde , L , Gao , Z & Moan , T 2013 , Fatigue Analysis of a Wave Energy Converter Taking into Account Different Control Strategies . in ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering : Ocean Renewable Energy . vol. 8 , American Society of Mechanical Engineers , ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering , Nantes , France , 09/06/2013 . https://doi.org/10.1115/OMAE2013-10864 |
op_relation |
https://vbn.aau.dk/da/publications/93c9d473-22a7-4e67-8bc2-69f4c8e38e04 urn:ISBN:978-0-7918-5542-3 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1115/OMAE2013-10864 |
container_title |
Volume 8: Ocean Renewable Energy |
_version_ |
1810292335215378432 |