运动控制在变桨控制系统中的应用

Preliminary Analysis on Application of Motion Control in the Pitch Control System

风力发电变桨控制系统本质上是一个运动控制系统,运动控制系统的跟随误差、定位时间和定位误差会影响变桨的性能,从而影响发电机的输出功率。从运动控制角度出发,分析了单轴变桨系统的数学模型,在原有PID控制器基础上引入速度前馈和加速度前馈,并用MATLAB软件进行了仿真验证。在某风机的实际应用中,仿真代码导入控制器,结果显示引入的前馈控制器可有效提高发电机输出功率的平稳性。

Wind turbine pitch control system is essentially a motion control system,the following error,positioning time and positioning errors of the motion control system can affect the performance of the pitch,thereby,it may affect the output power of the generator.From the perspective of the motion control,the mathematical model of the uniaxial pitch system was analyzed and the velocity feedforward and acceleration feedforward were introduced on the base of the original PID controller.It was demonstrated via the simulation by MATLAB software.In practical blower fan applications,the simulation code was led into the controller.The results show that the lead-in feedforward controller could effectively improve the smoothness of the generated output power.