TY - JOUR
T1 - Flexible dynamic modeling and analysis of drive train for Offshore Floating Wind Turbine
AU - Li, Zhanwei
AU - Wen, Binrong
AU - Wei, Kexiang
AU - Yang, Wenxian
AU - Peng, Zhike
AU - Zhang, Wenming
N1 - Funding Information:
This work is supported by the National Natural Science Foundation of China (Grant No. 11632011 ).
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Drive train has a significant influence on the reliability of wind turbines. As for the Offshore Floating Wind Turbine (OFWT), the importance of the drive train is even more prominent due to the more complex operating conditions at the ocean. In this study, dynamic characteristics of the OFWT drive train are investigated based on flexible dynamic model. First, this paper presents a flexible dynamic model of the drive train, which includes not only the full coupling of gear meshing but also the flexibilities of planet carrier and ring gear. Then, a corresponding finite element model is established to verify the reliability of the proposed model by comparing natural frequencies and vibration responses. Afterwards, dynamic characteristics of the drive train are analyzed under different excitations, including the time-varying mesh stiffness, wind turbulence, tower shadow, wind shear and platform motions. Results show that resonant peaks of the system are more likely to appear when the mesh frequency or its multiplication of the gear pair 1–2 is equal to the natural frequency. In addition, it is revealed that the tower shadow is the most significant excitation source for OFWT drive train, followed by platform pitch and surge motions.
AB - Drive train has a significant influence on the reliability of wind turbines. As for the Offshore Floating Wind Turbine (OFWT), the importance of the drive train is even more prominent due to the more complex operating conditions at the ocean. In this study, dynamic characteristics of the OFWT drive train are investigated based on flexible dynamic model. First, this paper presents a flexible dynamic model of the drive train, which includes not only the full coupling of gear meshing but also the flexibilities of planet carrier and ring gear. Then, a corresponding finite element model is established to verify the reliability of the proposed model by comparing natural frequencies and vibration responses. Afterwards, dynamic characteristics of the drive train are analyzed under different excitations, including the time-varying mesh stiffness, wind turbulence, tower shadow, wind shear and platform motions. Results show that resonant peaks of the system are more likely to appear when the mesh frequency or its multiplication of the gear pair 1–2 is equal to the natural frequency. In addition, it is revealed that the tower shadow is the most significant excitation source for OFWT drive train, followed by platform pitch and surge motions.
KW - Drive train
KW - Dynamic characteristics
KW - Flexible dynamic model
KW - Offshore floating wind turbine
UR - http://www.scopus.com/inward/record.url?scp=85068014258&partnerID=8YFLogxK
U2 - 10.1016/j.renene.2019.06.116
DO - 10.1016/j.renene.2019.06.116
M3 - Article
AN - SCOPUS:85068014258
VL - 145
SP - 1292
EP - 1305
JO - Solar and Wind Technology
JF - Solar and Wind Technology
SN - 0960-1481
ER -
