Vibration Prediction on the Generator Rotor of a Wind Turbine

In this paper, a time-efficient approach to predict vibrations on the stator of electrical machines is extended to predict vibrations on the generator rotor of a wind turbine. Nodal and lumped force methods to projecting forces on the mechanical structure are discussed and compared with pure FEA solution. Furthermore, node reduction technique is employed at the rotor side to reduce computational efforts. Finally, predicted vibrations are compared with experimental results.