前端调速式风力机组传动链建模与仿真

对前端调速式风力机传动链关键部件的工作原理进行分析，建立数学模型。分别建立风速模型、风轮空气动力学模型、传动链动力学模型、液力变矩器动态模型以及主轴转速计算模型。整合各子系统，引入神经网络控制，建立传动链整体仿真模型，进行模拟仿真。基于最大风能捕获量,综合考虑传动链结构参数,通过神经网络调节液力变矩器导叶开度,改变工作油循环流量,从而改变液力变矩器的输出转矩和转速。液力变矩器输出与风轮输出通过行星轮系综合作用于发电机前的主轴，使主轴转速稳定在设计值。

Modeling and Simulation of Front-end Speed Adjusting Wind Turbine Drive Train

Based on the new type of wind turbine drive train, analyses of the key parts were carried out, and the mathematical models were established. Simulation models of wind speed, wind turbine aerodynamics, hydraulic torque converter and spindle speed were established. Including the neural network control model, all models were integrated to establish the whole drive train simulation model. Then, the calculation and simulation were carried out. Based on the maximum wind energy capture, considered the structure parameters of the drive train, the guide vane opening of the hydraulic torque converter was controlled by the neural network to adjust the working oil circulation flow. Then, the torque and the speed of the converter were changed. Through planetary gears, the spindle before the generator was drived by the output of the converter and the output of the wind rotor together, to make the spindle speed stabilized at the design value.