振荡滑杆式波能装置振动特性优化与试验
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摘要
根据振动特性对振荡滑杆式波能转换系统进行优化,通过降低质量、增加弹性系数的方法减小吸波浮体运动与波浪的相位差,可实现波能捕获效率的提高。将优化前后的模型进行对比性试验,试验结果表明:低惯性波能转换装置水动力学响应明显优于普通惯性波能装置,波浪能俘获效率大幅增加,测得最优俘获宽度比由29.85%提升至51.73%,且对工作环境的适应性大大增强,能在不同波况下保持较高的能量转换效率。
With the development of economy and decrease of conventional fuels,more and more researches were focused on ocean wave energy,because of characteristics of a vast range of distribution,high energy density and a long lasting duration. Under the effecting of waves,the operation of wave energy converter is a typical kind of damping forced vibration. A prototype of wave energy converter with an energy absorber reciprocating along a slider was designed. Based on the analysis of vibration characteristics,the model was optimized by decreasing bouy mass and increasing resilience factor,which could reduce phase difference between energy absorber and incident wave. A contrast experiment was carried,and the results show significant increase in hydrodynamic response and energy conversion efficiency. The most optimal capture width ratio collected raises up to 51.73% from 29.85%,while a better adaptability to environment was proved and efficiency of energy transformation could be kept in a wide range of wave conditions.
With the development of economy and decrease of conventional fuels,more and more researches were focused on ocean wave energy,because of characteristics of a vast range of distribution,high energy density and a long lasting duration. Under the effecting of waves,the operation of wave energy converter is a typical kind of damping forced vibration. A prototype of wave energy converter with an energy absorber reciprocating along a slider was designed. Based on the analysis of vibration characteristics,the model was optimized by decreasing bouy mass and increasing resilience factor,which could reduce phase difference between energy absorber and incident wave. A contrast experiment was carried,and the results show significant increase in hydrodynamic response and energy conversion efficiency. The most optimal capture width ratio collected raises up to 51.73% from 29.85%,while a better adaptability to environment was proved and efficiency of energy transformation could be kept in a wide range of wave conditions.
引文
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[2]谭思明,秦洪花,赵霞,等.海洋波浪能领域国际专利竞争态势分析[J].现代情报,2011,31(9):14-17.[2]Tan Siming,Qin Honghua,Zhao Xia,et al.International patent analysis for ocean wave energy[J].Journal of Modern Information,2011,31(9):14-17.
[3]施伟勇,王传崑,沈家法.中国的海洋能资源及其开发前景展望[J].太阳能学报,2011,32(6):913-923.[3]Shi Weiyong,Wang Chuankun,Shen Jiafa.Utilization and prospect of ocean energy resource in China[J].Acta Energiae Solaris Sinica,2011,36(6):913-923.
[4]Clément A,Mc Cullen P,Falc?o A,et al.Wave energy in Europe:Current status and perspectives[J].Renewable and Sustainable Energy Reviews,2002,6(5):405-431.
[5]Falnes J.A review of wave-energy extraction[J].Marine Structures,2007,20(4):185-201.
[6]Antonio F O.Wave energy utilization:A review of the technologies[J].Renewable and Sustainable Energy Reviews,2010,14(3):899-918.
[7]Mekhiche M,Edwards K A.Ocean power technologies power buoy:System-level design,development and validation methodology[A].Proceedings of the 2nd Marine Energy Technology Symposium[C].Seattle,WA,2014.
[8]Henry A,Doherty K,Cameron L,et al.Advances in the design of the oyster wave energy converter[A].Marine Renewables and Offshore Wind Conference[C],Royal Institute of Naval Architects,2010.
[9]Sheng S,Wang K,Lin H,et al.Model research and open sea tests of 100 kW wave energy convertor Sharp Eagle Wanshan[J].Renewable Energy,2017,113:587-595.
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[11]盛松伟,游亚戈,张亚群,等.漂浮式波浪能装置能量转换系统研究[J].机械工程学报,2012,48(24):141-146.[11]Sheng Songwei,You Yage,Zhang Yaqun,et al.Research on power take-off system of floating wave power device[J].Journal of Mechanical Engineering,2012,48(24):141-146.
[12]游亚戈,张亚群,王文胜,等.带铰接斜滑杆振荡浮子波浪能装置[P].中国:CN103133232A,2013-06-05.[12]You Yage,Zhang Yaqun,Wang Wensheng,et al.Oscillating buoy wave energy device with a hinge jointed slider[P].China:CN103133232A,2013-06-05.
[13]Zhang Yaqun,Sheng Songwei,You Yage,et al.Research on energy conversion system of floating wave energy converter[J].China Ocean Engineering,2014,28(1):105-113.