周期性脉动源对风力机功率的影响  

Effect of Periodic Pulsation Source on Wind Turbine Power

作　　者：李银然[1] 杨博文 赵峰 赵慧廷 李晔[2] LI Yin-ran;YANG Bo-wen;ZHAO Feng;ZHAO Hui-ting;LI Ye(School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《液压气动与密封》2024年第2期10-14,共5页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金(52166014);甘肃省高等学校产业支撑计划项目(2022CYZC-27)。

摘　　要：针对WindPACT1.5 MW机组,通过大涡模拟探究风轮5°仰角时周期性脉动源(仰角、塔影效应、偏航、风剪切)对风力机总功率的影响,并结合逆叶素动量理论,进一步分析功率与升力系数之间的联系。结果表明,仰角、塔影效应加仰角与偏航加仰角均使得风力机总功率产生“3P”的波动规律,而风剪切加仰角使得总功率产生“锯齿状”的高频率波动规律,其中偏航是总功率损失的主要因素,塔影效应是功率波动的主要因素,且发现升力系数波动规律与功率单周期内的波动规律相似。Based on the WindPACT1.5 MW unit,the influence of periodic pulsation sources(elevation angle,tower shadow effect,yaw,wind shear)on the total power of wind turbine at 5°elevation angle is explored by large eddy simulation,and the relationship between power and lift coefficient is further analyzed by combined inverse blade element momentum theory.The results show that elevation angle,tower shadow effect plus elevation angle and yaw plus elevation angle all make the total power of wind turbine fluctuate“3 P”,while the wind shear plus elevation angle makes the total power produce“sawtooth”high frequency fluctuation law.among them,yaw is the main factor of total power loss.tower shadow effect is the main factor of power fluctuation,and it is found that the fluctuation law of lift coefficient is similar to that in a single cycle.

关 键 词：风力机 大涡模拟 周期性脉动源 功率波动 升力系数波动 

分 类 号：TH138[机械工程—机械制造及自动化] TK83[动力工程及工程热物理—流体机械及工程]