Experimental study on the influence of centroid position of wind turbine section on flutter
Qi Zheng,
Zhiying Gao,
Baozhong Zhao,
Yefei Bai,
Rina Su,
Xiaoliang Han,
Feng Zhao,
Xueqing Dong,
Jianwen Wang
Affiliations
Qi Zheng
Key Laboratory of Wind Energy and Solar Energy Utilization Technology of Ministry of Education, Inner Mongolia University of Technology, Hohhot, 010051, China; Inner Mongolia University Renewable Energy Engineering Research Center, Inner Mongolia University of Technology, Hohhot, 010051, China; College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Zhiying Gao
Key Laboratory of Wind Energy and Solar Energy Utilization Technology of Ministry of Education, Inner Mongolia University of Technology, Hohhot, 010051, China; Inner Mongolia University Renewable Energy Engineering Research Center, Inner Mongolia University of Technology, Hohhot, 010051, China; College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China; Corresponding author. Key Laboratory of Wind Energy and Solar Energy Utilization Technology of Ministry of Education, Inner Mongolia University of Technology, Hohhot, 010051, China.
Baozhong Zhao
Key Laboratory of Wind Energy and Solar Energy Utilization Technology of Ministry of Education, Inner Mongolia University of Technology, Hohhot, 010051, China; Inner Mongolia University Renewable Energy Engineering Research Center, Inner Mongolia University of Technology, Hohhot, 010051, China; College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Yefei Bai
Key Laboratory of Wind Energy and Solar Energy Utilization Technology of Ministry of Education, Inner Mongolia University of Technology, Hohhot, 010051, China; Inner Mongolia University Renewable Energy Engineering Research Center, Inner Mongolia University of Technology, Hohhot, 010051, China; School of Civil Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Rina Su
Key Laboratory of Wind Energy and Solar Energy Utilization Technology of Ministry of Education, Inner Mongolia University of Technology, Hohhot, 010051, China; Inner Mongolia University Renewable Energy Engineering Research Center, Inner Mongolia University of Technology, Hohhot, 010051, China; College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Xiaoliang Han
Inner Mongolia Electric Power Survey and Design Institute, Hohhot, 010020, China
Feng Zhao
Key Laboratory of Wind Energy and Solar Energy Utilization Technology of Ministry of Education, Inner Mongolia University of Technology, Hohhot, 010051, China; Inner Mongolia University Renewable Energy Engineering Research Center, Inner Mongolia University of Technology, Hohhot, 010051, China; College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Xueqing Dong
Key Laboratory of Wind Energy and Solar Energy Utilization Technology of Ministry of Education, Inner Mongolia University of Technology, Hohhot, 010051, China; Inner Mongolia University Renewable Energy Engineering Research Center, Inner Mongolia University of Technology, Hohhot, 010051, China; College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Jianwen Wang
Key Laboratory of Wind Energy and Solar Energy Utilization Technology of Ministry of Education, Inner Mongolia University of Technology, Hohhot, 010051, China; Inner Mongolia University Renewable Energy Engineering Research Center, Inner Mongolia University of Technology, Hohhot, 010051, China; College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
Aiming at the large aspect ratio characteristics of large wind turbines, it is easy to cause irreversible damage due to flutter during operation. A two-degree-of-freedom (plunge and pitch) flutter test bench was built using the time domain and frequency domain analysis methods of dynamic signals. The influence of different centroid positions on the flutter boundary was studied. The test shows that the closer the centroid position is to the leading edge of the wing segment, the better the aeroelastic stability of the wing segment is. Under the linear condition, the forward movement of the centroid position has a more significant influence on the flutter. In addition, the main reason for the wing flutter is related to the decrease of net damping and the coupling of the aeroelastic natural frequency of the pitching and plunging motions. The pitch motion is dominant in the two-degree-of-freedom motion. The farther the centre of mass is from the torsion axis, the greater the pitch and plunge motion displacement. The pitch motion has a more significant impact on the system than the plunge motion. Therefore, the study of flutter suppression should focus on pitch motion.
