大型水平轴风力机风能利用效率的估算探讨  

Investigation and Estimate of Wind Energy Utilizing Efficiency for Large-type Horizontal Axis Wind Turbines

作　　者：张维智[1] 薛波[2] 

机构地区：[1]中国空气动力研究与发展中心,四川绵阳621000 [2]西南科技大学土木与建筑工程学院,四川绵阳621002

出　　处：《东方电气评论》2011年第2期49-54,共6页Dongfang Electric Review

摘　　要：由于水平轴风力发电机在运行时无法获得前方来流的速度,整机的风能效率和功率计算往往采用风轮后的风速来进行,因而在计算风轮的利用效率时产生很大的偏差。本文应用动量理论,通过对DEWIND-D8水平轴风力发电机风轮利用效率进行计算,获得了水平轴风力机风能利用的实际效率值和计算效率值偏差很大,同时指出了产生计算误差的理论原因。Since it is unable to acquire the velocity of the anterior gas flow when the horizontal axis turbine is working, the only way to calculate the efficiency of wind energy and power is based on the values of wind gas flow velocity measured behind the wind wheel, so there is considerable error with the estimated use efficiency of the wind wheel. This article applies the momentum theory to calculate the use efficiency of horizontal axis turbine DEWIND-DS, resulting that there is big deviation between actual efficiency and computed one along with the theoretical reasons of calculation error.

关 键 词：水平轴风力机 效率计算 风轮 风能利用 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]