针对某新翼型叶片,提出了翼型加厚、新型双夹板式叶片连接方式、叶片沿翼展方向开槽和加胁三种风轮固有频率改进新方法.利用PULSE16.1结构振动分析系统对相应系列新翼型叶片风轮进行模态测试,获得各结构改进方法对风轮各阶固有频率的影响规律.试验结果表明:加厚新翼型叶片可有效提升风轮前三阶固有频率18％以上;新型双夹板式叶片安装方式较老式法兰紧固叶片安装方式也可有效提升风轮前三阶固有频率,且其对风轮各阶对称振型固有频率的提升效应较反对称振型显著;沿翼展方向开槽和加胁的新翼型同样可有效提升风轮的前三阶固有频率,且其对风轮各阶反对称振型固有频率的提升效应较对称振型显著.
参考文献
| [1] | J.C.C. Henriques;F. Marques da Silva;A.I. Estanqueiro;L.M.C. Gato .Design of a new urban wind turbine airfoil using a pressure-load inverse method[J].Renewable energy,2009(12):2803-2812. |
| [2] | Ronit K. Singh;M. Rafiuddin Ahmed;Mohammad Asid Zullah;Young-Ho Lee.Design of a low Reynolds number airfoil for small horizontal axis wind turbines[J].Renewable energy,2012:66-76. |
| [3] | SHAO Song,ZHU Qinghua,ZHANG Chenglin,NI Xianping.Airfoil Aeroelastic Flutter Analysis Based on Modified Leishman-Beddoes Model at Low Mach Number[J].中国航空学报（英文版）,2011(05):550-557. |
| [4] | E. Poursaeidi;M. Salavatian .Failure analysis of generator rotor fan blades[J].Engineering failure analysis,2007(5):851-860. |
| [5] | Matthew A. Lackner;Mario A. Rotea .Structural control of floating wind turbines[J].Mechatronics: The Science of Intelligent Machines,2011(4):704-719. |
| [6] | Gordon M. Stewart;Matthew A. Lackner .The effect of actuator dynamics on active structural control of offshore wind turbines[J].Engineering structures,2011(5):1807-1816. |
| [7] | Karam Y. Maalawi;Hani M. Negm .Optimal frequency design of wind turbine blades[J].Journal of Wind Engineering and Industrial Aerodynamics: The Journal of the International Association for Wind Engineering,2002(8):961-986. |
| [8] | Negm HM.;Maalawi KY. .Structural design optimization of wind turbine towers[J].Computers & structures,2000(6):649-666. |
| [9] | Kevin Maki;Ricardo Sbragio;Nickolas Vlahopoulos.System design of a wind turbine using a multi-level optimization approach[J].Renewable energy,2012:101-110. |
| [10] | 李德源,叶枝全,包能胜,陈严.风力机旋转风轮振动模态分析[J].太阳能学报,2004(01):72-77. |
| [11] | 汪建文,赵志渊,刘博.三叶片风轮动力学特性的分析[J].太阳能学报,2009(02):222-225. |
| [12] | 赵志渊,汪建文,刘金鹏.单叶风轮与三叶风轮的动力学特性的比较[J].可再生能源,2008(04):90-92. |
| [13] | 汪建文,闫建校,刘金鹏,赵志渊.多叶片风轮的试验模态测试与分析[J].太阳能学报,2008(12):1460-1464. |
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