Identification of the Dynamics of Large Wind Turbines by Using Photogrammetry
Identification of the Dynamics of Large Wind Turbines by Using Photogrammetry
复制标题
利用摄影测量识别大型风力发电机的动力学
DOI：
10.1007/978-1-4419-9716-6_32
复制
发表时间：
2011
影响因子：
6.3
通讯作者：
M. Tooren
中科院分区：
文献类型：
--
作者：
Muammer Ozbek;F. Meng;D. Rixen;M. Tooren
在这项工作中，介绍了为研究使用摄影测量技术监测大型风力涡轮机运行动态的可行性而进行的内场测试的初步结果。在该工作范围内，转子直径为 80 米的风力涡轮机在运行时使用四个 CCD 摄像机同时捕获该风力涡轮机的响应。然后使用基于最小二乘复指数（LSCE）方法和子空间系统识别（SSI）的两种不同的系统识别技术对捕获的响应进行分析，同时导出涡轮机的动态特性（频率、阻尼比和振型）。还考虑了非常高的模态阻尼比和相对较短的测量周期对识别结果的可能影响。
In this work, the initial results of the infield tests performed to investigate the feasibility of using photogrammetry in monitoring the dynamics of large scale wind turbines in operation are presented. Within the scope of the work, the response of a wind turbine, with a rotor diameter of eighty meters, was captured by using four CCD cameras simultaneously while the turbine was in operation. The captured response was then analyzed by using two different system identification techniques based on Least Square Complex Exponential (LSCE) method and Sub-space System Identification (SSI) while the dynamic characteristics (the frequencies, damping ratios and mode shapes) of the turbine were derived. Possible effects of very high modal damping ratios and relatively short measurement periods on the identified results were also considered.