双风轮风力机前后风轮功率特性相互影响分析

Analysis of Power Characteristic of Dual-wind Turbine Under Different Area Ratio

双风轮风力机相对于传统风力机能够吸收更多的风能转化成电能。通过对3种面积比(56%、64%、87%)的双风轮风力机开展风洞实验,研究前后风轮不同叶尖速比时,对双风轮风力机功率特性的影响。结果表明:面积比为64%双风轮风力机的后风轮随着叶尖速比的增大,对前风轮功率有促进作用,而56%和87%的双风轮的后风轮叶尖速比的增大对前风轮功率有抑制作用;3种面积比双风轮的前风轮叶尖速比的增大对后风轮的功率都有抑制作用。3种面积比的双风轮风力机的总功率均大于单风轮风力机,且面积比为64%的双风轮风力机功率提升最大。

Dual-wind turbines can absorb more wind energy to generate electricity than wind turbine.Wind tunnel experiments were carried out on three types of twin-turbine wind turbines with area ratios(56%,64%and 87%)to study the influence of different blade tip ratios on the power characteristics of twin-turbine wind turbines.The results show that with the increase of blade tip ratio,the power of the front rotor is promoted for the rear rotor with an area ratio of 64%,while the power of the front rotor is inhibited for the increase of blade tip ratio of the rear rotor with an area ratio of 56%and 87%.The power of the rear rotor is inhibited by the increase of the tip speed ratio of the front rotor.The total power of the three types of area ratio of the dual-turbine wind turbine is greater than that of the single-turbine wind turbine,and the dual-turbine wind turbine with area ratio of 64%has the largest power increase.