摘要
风速的随机性和不确定性会导致风电场输出功率的随机波动,可能影响电网的安全运行和电能质量,在大型风电项目建设之前进行建模和仿真具有重要的指导意义。分析了风能转换系统的系统构架,给出了风力机空气动力学特性和建模方法,建立了传动链数学模型和感应发电机的数学模型。以MATLAB/Simulink为研究工具,设计了鼠笼式感应发电机的矢量控制系统,构建了转矩环、速度环和功率环控制器,仿真结果表明,该系统能实现大功率风能转换系统的最优控制特性跟踪。
Fluctuation and uncertainty are the characteristics of wind energy which cause wind energy output power fluctuation,which even influence the grid stability and power quality,so modeling and simulation have important guiding significance for large wind power project.The structure of wind energy conversion system（WECS）was analyzed and the wind turbine model was built up after researching the wind turbine characteristics,also the mathematical model of drive train and squirrel-cage induction generator（SCIG）was created.The vector control system was designed with MATLAB/Simulink platform and the torque controller,speed controller and power controller was designed,and the simulation result shows this control system can realize optimal control for large wind energy conversion system.
出处
《机械设计与制造》
北大核心
2013年第1期162-164,共3页
Machinery Design & Manufacture
基金
河南省科技厅科技攻关计划资助项目(122102210416
112102210339)
关键词
风能转换系统
建模与仿真
鼠笼式感应电机
矢量控制
控制策略
Wind Energy Conversion System
Modeling And Simulation
Squirrel-Cage Induction Generator
Vector Control
Control Strategies
