基于2自由度传动调速的风电机组模拟系统设计

The Design of Simulation System for Novel Wind Turbine With Two DOFs Transmission

在与双馈、永磁直驱等传统风电机组的结构方案进行对比分析的基础上,提出了2自由度传动的新型风电机组模拟系统方案：首先,建立了风轮转矩与风速、转速、桨距角的关系式,并采用电动机按此关系式模拟风轮转矩作为输入;其次,建立了典型2自由度传动机构（差动轮系）的动力学模型,用其模拟新型风电机组的传动链;最后,在SIMULINK中分别建立了新型风电机组和传统双馈风电机组的模拟系统。将仿真结果进行对比,验证了2自由度传动的风电机组模拟系统的有效性,为后续2自由度传动调速风电机组物理试验平台的设计提供了理论基础。

The simulation system of wind turbine with two DOFs（ Degree of Freedom） transmission is designed based on the comparative analysis on the wind turbine with DFIG（ Doubly Fed Induction Generator） and PMSG（Permanent Magnet Synchronous Generator）. First of all,the relationship among the wind rotor torque,rotating speed,wind speed and pitch angle is built and a motor which simulated as the wind rotor works according to the relationship.The dynamics model of two DOFs mechanism（ differential gear train） is established as the transmission of the novel wind turbine. The model of traditional wind turbine and novel wind turbine are built in SIMULINK respectively. The effectiveness of the two DOFs wind turbine simulation system is verified by comparing the simulation results with the ideal values.