In order to improve the vibration of wind turbines,a double-fork blade tip structure modification design scheme for small wind turbine blades is proposed,and the external characteristic test and vibration characteristic test were carried out on the double-fork blade tip structure wind turbine blades with different angles after modification,to obtain the blade output power and vibration frequency.Through comparison with unmodified blades,it is found that the double-fork blade tip structure can improve the output power of the wind turbine in the low wind speed section and the middle wind speed section of(3～9)m/s;the double-fork blade tip structure can adjust the trend of the wind wheel vibration frequency curve,make the wind wheel leave the resonance zone faster,and make the resonance speed farther from the rated speed.It can be seen that the double-fork blade tip structure can effectively improve the vibration of the wind turbine.Among them,the double-fork blade tip structure with the blade tip angle of 90°has the best performance.
关键词
风力机/叶尖结构/功率/固有频率/振动频率/共振
Key words
Wind Turbine/Blade Tip Structure/Power/Natural Frequency/Vibration Frequency/Resonance
维普
万方数据