大功率风电机组新型传动系的建模与仿真

在行星齿轮传动的基础上提出了一种用于大功率风电机组的新型液力速度控制传动系,它包括风轮转子、行星齿轮增速机构、液力机械和同步发电机.建立了传动系统的动态数学模型,并以MATLAB/ simulink为仿真平台建立了其仿真框图,对液力速度控制系统的速度调节特性进行了仿真研究.仿真结果表明新型传动系可以实现无级调速、变速输入、恒速输出,并在速度调节特性中显示了很好的稳定性和动态性能;它可以稳定电力的输出,提高风力的发电量,并减轻传动系统的尖峰负载.

Modeling and Simulation of a Novel Drive Train for Wind Turbine with Large Capacity

On the basis of a planetary transmission, a novel hydrodynamic speed controlled transmission system for wind turbines with large capacity is presented. The new drive train consists of wind rotors, planet accelerators, hydro-mechanical and synchronous generators. The dynamic mathematical model of the drive train is established. The digital simulation of speed regulation characteristics for hydrodynamic speed controlled system is studied by using Matlab/Simulink. The simulation results show that continuously variable transmission and fixed speed control can be achieved, and the drive train works well in stability and dynamic performances. They can increase the power yield from the wind, smooth the electric power output, and alleviate the load peak in the new drive train .