基于LQR方法的大型风力机转矩控制建模与仿真

发布时间：2018-06-10 21:21

本文选题：风力发电机 + 转矩控制　；参考：《太阳能学报》2015年06期

【摘要】：当风速高于额定风速、小于切出风速时,恒电机转矩控制易导致传动链扭矩大幅波动,降低风力发电机组关键零部件的疲劳寿命。针对该问题建立基于状态空间的传动链线性化模型,采用线性二次型调节器(LQR)方法设计风力发电机的转矩控制器,将传动链一阶扭转模态对应的闭环极点向复平面的左侧移动,实现对传动链的动态加阻。通过Matlab7.1/Simulink中的控制器与FAST风力机模型的联合仿真表明该控制方法的有效性,即可提高传动链的阻尼,降低风力发电机组关键零部件的载荷。
[Abstract]:When the wind speed is higher than the rated wind speed, when the wind speed is less than the wind speed, the torque control of the constant motor will easily lead to a large fluctuation in the torque of the transmission chain and reduce the fatigue life of the key parts of the wind turbine. A linear model of the transmission chain based on the state space is set up, and the linear two order regulator (LQR) is used to design the rotation of the wind generator. The moment controller, which moves the closed loop poles corresponding to the first order torsional modes of the transmission chain to the left side of the complex plane, realizes the dynamic resistance to the transmission chain. The joint simulation of the controller in Matlab7.1/Simulink and the model of the FAST wind turbine shows that the effectiveness of the control method can improve the damping of the transmission chain and reduce the key of the wind turbine generator set. Load of parts.
【作者单位】：重庆大学机械工程学院;
【基金】：国家自然科学基金(51005255) 教育部高等学校博士学科点科研基金(20090191120005) 中央高校基本科研业务费项目(106112015CDJXY110006)
【分类号】：TM315

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