Experimental analyses of two‐body wave energy converters with hydraulic power take‐off damping in regular and irregular waves
Abstract A flume experimental study of a two‐body wave energy converter (WEC) with a hydraulic power take‐off (PTO) was conducted under the conditions of both regular and irregular waves. The experimental results were analysed using the control variable method, and the effects of the wave elements a...
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| Language: | English |
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Wiley
2021-10-01
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| Series: | IET Renewable Power Generation |
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| Online Access: | https://doi.org/10.1049/rpg2.12218 |
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| author | Shuang Wu Yanjun Liu Jian Qin |
| author_facet | Shuang Wu Yanjun Liu Jian Qin |
| author_sort | Shuang Wu |
| collection | DOAJ |
| description | Abstract A flume experimental study of a two‐body wave energy converter (WEC) with a hydraulic power take‐off (PTO) was conducted under the conditions of both regular and irregular waves. The experimental results were analysed using the control variable method, and the effects of the wave elements and external load on the relative heave motion response and capture width ratio of the device are discussed. For the regular waves, three modes were found when analysing the variation of the relative heave motion response with the incident wave height, and the initial moving line of the WEC model was obtained. For the irregular waves, the experiment displayed two motion states. One was a following motion with a similar value to the incident wave period, and the other was a delayed motion with a larger value than the wave period. Based on the calculation of the capture width ratio of the system both under the regular and irregular wave conditions, the maximum value occurred at a frequency ratio of ω/ωn=0.59 and a hydraulic load of p = 0.20. The capture width ratio in the irregular waves was approximately 10%‐40% higher than that of the regular waves for the same wave parameters. |
| format | Article |
| id | doaj-art-a2b967e5550c4e19ba7d766a0a2c4865 |
| institution | Matheson Library |
| issn | 1752-1416 1752-1424 |
| language | English |
| publishDate | 2021-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Renewable Power Generation |
| spelling | doaj-art-a2b967e5550c4e19ba7d766a0a2c48652025-07-07T09:11:48ZengWileyIET Renewable Power Generation1752-14161752-14242021-10-0115143165317510.1049/rpg2.12218Experimental analyses of two‐body wave energy converters with hydraulic power take‐off damping in regular and irregular wavesShuang Wu0Yanjun Liu1Jian Qin2Institute of Marine Science and Technology Shandong University Qingdao Shandong 266237 ChinaInstitute of Marine Science and Technology Shandong University Qingdao Shandong 266237 ChinaInstitute of Marine Science and Technology Shandong University Qingdao Shandong 266237 ChinaAbstract A flume experimental study of a two‐body wave energy converter (WEC) with a hydraulic power take‐off (PTO) was conducted under the conditions of both regular and irregular waves. The experimental results were analysed using the control variable method, and the effects of the wave elements and external load on the relative heave motion response and capture width ratio of the device are discussed. For the regular waves, three modes were found when analysing the variation of the relative heave motion response with the incident wave height, and the initial moving line of the WEC model was obtained. For the irregular waves, the experiment displayed two motion states. One was a following motion with a similar value to the incident wave period, and the other was a delayed motion with a larger value than the wave period. Based on the calculation of the capture width ratio of the system both under the regular and irregular wave conditions, the maximum value occurred at a frequency ratio of ω/ωn=0.59 and a hydraulic load of p = 0.20. The capture width ratio in the irregular waves was approximately 10%‐40% higher than that of the regular waves for the same wave parameters.https://doi.org/10.1049/rpg2.12218Numerical approximation and analysisApplied fluid mechanicsSurface waves, tides, and sea levelWave powerControl of electric power systemsNumerical analysis |
| spellingShingle | Shuang Wu Yanjun Liu Jian Qin Experimental analyses of two‐body wave energy converters with hydraulic power take‐off damping in regular and irregular waves IET Renewable Power Generation Numerical approximation and analysis Applied fluid mechanics Surface waves, tides, and sea level Wave power Control of electric power systems Numerical analysis |
| title | Experimental analyses of two‐body wave energy converters with hydraulic power take‐off damping in regular and irregular waves |
| title_full | Experimental analyses of two‐body wave energy converters with hydraulic power take‐off damping in regular and irregular waves |
| title_fullStr | Experimental analyses of two‐body wave energy converters with hydraulic power take‐off damping in regular and irregular waves |
| title_full_unstemmed | Experimental analyses of two‐body wave energy converters with hydraulic power take‐off damping in regular and irregular waves |
| title_short | Experimental analyses of two‐body wave energy converters with hydraulic power take‐off damping in regular and irregular waves |
| title_sort | experimental analyses of two body wave energy converters with hydraulic power take off damping in regular and irregular waves |
| topic | Numerical approximation and analysis Applied fluid mechanics Surface waves, tides, and sea level Wave power Control of electric power systems Numerical analysis |
| url | https://doi.org/10.1049/rpg2.12218 |
| work_keys_str_mv | AT shuangwu experimentalanalysesoftwobodywaveenergyconverterswithhydraulicpowertakeoffdampinginregularandirregularwaves AT yanjunliu experimentalanalysesoftwobodywaveenergyconverterswithhydraulicpowertakeoffdampinginregularandirregularwaves AT jianqin experimentalanalysesoftwobodywaveenergyconverterswithhydraulicpowertakeoffdampinginregularandirregularwaves |