Analysis of Vibration Characteristics for Wind Turbine Gearbox
Wind turbine is the high-end and important equipment, of which the reliability and stability is always one of the main problems. Because the gearbox is running under the condition of dynamic load caused by random wind speed, it has important significance for improving reliability of the transmission system to research dynamic behaviors of wind turbine gearbox, especially the vibration characteristics. First of all, time-varying stiffness of the meshing gear-pair is calculated in this article. Then the dynamic model of parallel gears is established and the corresponding vibration characteristics are simulated. Finally, the conclusion that the speed increasing gearbox has the amplified effect on vibration displacement disturbance and the speed decreasing gearbox has the diminished effect on vibration displacement disturbance is drawn from the contrastive analysis of vibration characteristics for these two gearboxes.