Dynamic Characteristics of Planetary Gears Train of Semi-Direct Drive Wind Turbine

Abstract

The speed increasing gearbox is the key part of the wind turbine, and it requires higher reliability and service life than general mechanical system. The single-stage planetary gears train(PGT) are commonly used in the semi-direct drive wind turbines, which sustain low speed, heavy load, varying speed and varying load. The dynamic characteristics are very complex, due to the frequent disturbance under the random wind and have a greater impact on reliability and stability of wind turbines. In this paper, the torsional dynamic model for PGT of semi-direct drive wind turbine was developed by lumped parameter method. According to the configuration and design parameters of the planetary gears, the natural frequencies are calculated, and the vibration modes are also analyzed. The actual wind speed is simulated by the weight sparse least squares support vector machines (WSLS- SVM), and the input torque load is also obtained. Considering the varying wind load and parameter excitations of system, the dynamic response of the PGT is calculated by numerical method.

Simulation Analysis of Planetary Gears Train of Semi-Direct Drive Wind Turbine Based on ADAMS

“…There are many studies of the planetary gears of the wind turbines including modeling, free vibration, mesh phasing, virtual prototype etc [1][2][3][4]. However studies on dynamics of single-stage planetary gears of semi-direct drive wind turbine are very limited [5]. This paper is about the simulation of the single-stage planetary gear system based on ADAMS to get the mesh force of each component for the further study.…”