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Dynamic analysis of the drive train of a wind turbine based upon the measured load spectrum
Caichao Zhu,Shuang Chen,Hua iju Liu,Huaqing Huang,Guangfu Li,Fei Ma 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.6
A dynamic model of the drive train of a megawatt wind turbine is proposed in which the blades, the hub, the main shaft, and the speedupgearbox are assumed as flexibilities. The external excitation due to the measured load spectrum and the internal excitations due to thetime-varying mesh stiffness, the transmission errors, and the meshing impacts within the gearbox are considered to predict the dynamicresponse of the system. Results show that the most vibration energy occurs at the speed-up gearbox, followed by the generator, and thenthe main shaft. An experimental remote real-time system is developed to monitor vibration performance of the drive train, with which theaccelerations of components are detected. The experimental results are in accordance with the theoretical results.