变速变桨风力机的自适应变桨及转矩控制  

Adaptive pitch and torque control of wind turbines

作　　者：杜静[1] 文薄程[1] 谢双义[1] 金鑫[1] 倪小伟[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030

出　　处：《电源技术》2014年第10期1904-1906,共3页Chinese Journal of Power Sources

基　　金：国家科技支撑计划项目(2009BAA22B02);国家自然科学基金项目(51005255);教育部高等学校博士学科点科研基金项目(20090191120005)

摘　　要：针对风力机特性仿真结果的不准确性,风力机在运行过程中运行参数的变化导致最初选定的名义桨距角可能不是最优值,以及传统变桨可能导致电机转矩波动过大的问题,提出自适应变桨控制策略和线性二次型调节(linear quadratic regulator,LQR)转矩控制策略。以5 MW变速变桨风力发电机组为验证对象,使用Matlab/Simulink和FAST软件进行联合仿真,仿真结果表明所提出的控制策略能很好地解决桨距角最优值的确定以及在额定风速以上电机转矩波动过大的问题。For the inaccuracy of the simulation, results in the characteristics of wind turbines and its changing operating parameters may lead to the initial selected nominal pitch angle not an optimal value, and the traditional pitch control could lead to the problem of excessive generator torque fluctuation, an adaptive pitch and a LQR（linear quadratic regulator） torque control strategy were proposed. With a 5 MW variable-speed variable-pitch wind turbine as an object for study, Matlab/Simulink and FAST software co-simulation were used. The simulation results show that the proposed control strategy is a good solution to determine the optimal pitch angle and the problem of excessive torque fluctuation above rated wind speed.

关 键 词：变速变桨 自适应 线性二次型调节 

分 类 号：TM315[电气工程—电机]