Dynamic analysis of a megawatt wind turbine drive train

다국어 초록 (Multilingual Abstract)

The dynamic performance of a wind turbine drive train significantly influences the operation of an entire machine. In this work, amegawatt wind turbine drive train is subject to theoretical and experimental dynamic analysis. The method of rigid-flexible couplingmultibody dynamics was applied to develop a dynamic model of the entire drive train. This model was then used to study the naturalcharacteristics of the system. The blades, hub, main shaft, and speed-up gearbox in the dynamic model were modeled as flexible bodies.

The potential resonances of the system were detected through Campbell and modal energy distribution analyses. Theoretical results showthat the first-order natural frequency of the system is approximately 1.72 Hz. This frequency represents a torsional vibration mode,Moreover, resonances are not observed within the normal operating speed range of the drive train. An experimental remote real-timesystem was developed to monitor the torsional vibration of the drive train. This vibration was used to measure the torsional vibration ofthe system overall. The experimental results are consistent with the theoretical results.

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