Examination of the virtues of parametric energy coupling in wave energy conversion
Parametric resonance has been observed, both numerically and experimentally, in various studies of wave energy converters (WECs). Large heave motions induce a periodic variation in the metacentric height of a WEC body and, consequently, cause a harmonic variation in pitch/roll restoring coefficient...
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| Format: | Article |
| Language: | English |
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European Wave and Tidal Energy Conference
2022-09-01
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| Series: | International Marine Energy Journal |
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| Online Access: | https://marineenergyjournal.org/imej/article/view/105 |
| _version_ | 1817979441534468096 |
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| author | Bingyong Guo John V. Ringwood |
| author_facet | Bingyong Guo John V. Ringwood |
| author_sort | Bingyong Guo |
| collection | DOAJ |
| description |
Parametric resonance has been observed, both numerically and experimentally, in various studies of wave energy converters (WECs). Large heave motions induce a periodic variation in the metacentric height of a WEC body and, consequently, cause a harmonic variation in pitch/roll restoring coefficients, which can parametrically excite the pitch/roll modes. Current studies attempt to determine the onset conditions of parametric resonance, by detecting the boundaries between stable and unstable regions in the parameter space. In the literature, some studies aim to make use of parametric resonance for improving power capture. In contrast, some studies try to suppress the effect of parametric resonance, as it can reduce power capture efficiency in the primary degree of freedom. However, how energy transfers from one mode to another is not fully understood. This study aims to analyse energy transfer between heave and pitch/roll modes when parametric resonance occurs. A generic cylindrical point absorber is studied as a WEC floater to consider non-linear wave-structure interaction, including non-linear Froude-Krylov and viscous forces. A heave-pitch-roll three-degree-of-freedom model is derived for numerical study of the energy transfer between different operational modes.
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| first_indexed | 2024-04-13T22:42:50Z |
| format | Article |
| id | doaj.art-ac2a2d0eb46d436c9f2a392e87176266 |
| institution | Directory Open Access Journal |
| issn | 2631-5548 |
| language | English |
| last_indexed | 2024-04-13T22:42:50Z |
| publishDate | 2022-09-01 |
| publisher | European Wave and Tidal Energy Conference |
| record_format | Article |
| series | International Marine Energy Journal |
| spelling | doaj.art-ac2a2d0eb46d436c9f2a392e871762662022-12-22T02:26:33ZengEuropean Wave and Tidal Energy ConferenceInternational Marine Energy Journal2631-55482022-09-015210.36688/imej.5.219-226Examination of the virtues of parametric energy coupling in wave energy conversionBingyong Guo0John V. Ringwood1Northwestern Polytechnical UniversityCentre for Ocean Energy Research, Dept. of Electronic Engineering, Maynooth University Parametric resonance has been observed, both numerically and experimentally, in various studies of wave energy converters (WECs). Large heave motions induce a periodic variation in the metacentric height of a WEC body and, consequently, cause a harmonic variation in pitch/roll restoring coefficients, which can parametrically excite the pitch/roll modes. Current studies attempt to determine the onset conditions of parametric resonance, by detecting the boundaries between stable and unstable regions in the parameter space. In the literature, some studies aim to make use of parametric resonance for improving power capture. In contrast, some studies try to suppress the effect of parametric resonance, as it can reduce power capture efficiency in the primary degree of freedom. However, how energy transfers from one mode to another is not fully understood. This study aims to analyse energy transfer between heave and pitch/roll modes when parametric resonance occurs. A generic cylindrical point absorber is studied as a WEC floater to consider non-linear wave-structure interaction, including non-linear Froude-Krylov and viscous forces. A heave-pitch-roll three-degree-of-freedom model is derived for numerical study of the energy transfer between different operational modes. https://marineenergyjournal.org/imej/article/view/105Wave energy converterparametric resonanceenergy transfermultiple degrees of freedomhydrodynamic modelling |
| spellingShingle | Bingyong Guo John V. Ringwood Examination of the virtues of parametric energy coupling in wave energy conversion International Marine Energy Journal Wave energy converter parametric resonance energy transfer multiple degrees of freedom hydrodynamic modelling |
| title | Examination of the virtues of parametric energy coupling in wave energy conversion |
| title_full | Examination of the virtues of parametric energy coupling in wave energy conversion |
| title_fullStr | Examination of the virtues of parametric energy coupling in wave energy conversion |
| title_full_unstemmed | Examination of the virtues of parametric energy coupling in wave energy conversion |
| title_short | Examination of the virtues of parametric energy coupling in wave energy conversion |
| title_sort | examination of the virtues of parametric energy coupling in wave energy conversion |
| topic | Wave energy converter parametric resonance energy transfer multiple degrees of freedom hydrodynamic modelling |
| url | https://marineenergyjournal.org/imej/article/view/105 |
| work_keys_str_mv | AT bingyongguo examinationofthevirtuesofparametricenergycouplinginwaveenergyconversion AT johnvringwood examinationofthevirtuesofparametricenergycouplinginwaveenergyconversion |