基于转矩补偿的风电变桨加载系统的研究及仿真

针对风电变桨加载系统在建模及控制方法上存在的缺陷,对桨叶模拟系统的补偿转矩进行了研究分析,对加载系统中的控制方法进行了改进,提出了一种转矩闭环控制与转矩补偿优化相结合的控制方法.基于Bladed软件对2.5 MW风电机组运行进行了仿真,同时利用该模型模拟现场工况,参与平台控制并进行了加载试验,将平台试验数据与仿真结果进行了比较,两者基本一致.研究结果表明,转矩闭环控制与转矩补偿优化相结合的控制方法能真实反映桨叶在风场的工况,使变桨加载系统的控制达到最优.

Research and simulation of pitch loading system in wind energy based on torque compensation

Aiming at the defects of modeling and control methods in pitch loading system of wind turbine, the compensating torque of blade simulation system was analyzed, and the control of the loading system was improved. The combination of torque close-loop control and optimization of torque compensation was introduced. The operation of 2.5 MW wind turbine was simulated based on Bladed, meanwhile, the model was used in simulating the working condition at site, helping to control the platform and having loading test. The experimental data of platform and the simulation results were compared. They were coincided well. The results indicate that the combination of torque close-loop control with torque compensation optimization can tndy reflect the conditions of blade in the wind field. It makes the control of pitch loading system achieve the optimal.