Dynamic Analysis of Multistage Gear Driven System of Wind Turbine

At present, wind power is developing rapidly. Gearbox is one of the key components of wind turbine. The equivalent dynamic model of the wind turbine gear driven system was established with lumped-parameter method, and the differential equations of torsional vibration were set up based on Newton Second Principle; the natural frequency and main vibration mode of the gear driven system were calculated and the characteristics of the vibration shapes were analyzed. The results have established basic for dynamic response calculation and analysis of the gear driven system, and provides a reference for system optimization design.