摘要
风力发电机组是复杂的多变量非线性系统,受参数变化和外部干扰严重,具有强耦合与强时变性,针对此特点本文设计了模糊控制器,建立了风力发电系统仿真模型,使得在额定风速以下时,根据风速变化,控制电机转速获得最佳叶尖速比,实现跟踪最大功率的目标;在额定风速以上时,控制风轮的桨距角以调节风能利用系数,实现风力发电机组的恒功率输出。通过Matlab仿真,对所设计的模糊控制器进行了仿真研究,结果表明:模糊控制器能够显著提高风力发电系统的稳定性和鲁棒性,具有良好的性能和控制效果。
The wind turbine is a complex multi-variable and nonlinear system,it＇s affected by parameter variations and external disturbances,and it has the strong coupling and strong time-variation.Based on this characteristic,the fuzzy controllers were designed,and the wind power system simulation model was established.When it＇s below the rated wind speed,the motor speed was controlled to get the optimum tip speed ratio with the variation of wind speed,aimed at tracing the maximum power.When it＇s above the rated wind speed,in order to achieve constant power output,the pitch angle was controlled to adjust wind energy performance coefficient.The simulation of the designed fuzzy controller was made and the results show that it can improve the stability and robustness of the wind power system,and has better performance and control effect.
出处
《化工自动化及仪表》
CAS
北大核心
2010年第12期76-79,82,共5页
Control and Instruments in Chemical Industry
基金
陕西省科技厅基金资助项目(2008KW-14)
关键词
风力发电
模糊控制
变速变桨
仿真
wind power generation
fuzzy control
variable speed adjustable pitch
simulation
