直驱永磁同步风力发电机灰色预测PI控制

Grey Prediction PI Control of Direct Drive Permanent Magnet Synchronous Wind Turbine

随着高性能优质永磁材料的研发和大功率变流技术的发展,直驱式永磁同步风力发电机(D-PMSG)得到越来越多的应用,风电系统具有的时变性和非线性使得传统的控制方法很难取得令人满意的控制效果。为此,基于D-PMSG机侧PI控制,在最大功率点跟踪(MPPT)下,提出一种灰色预测与传统PI控制相结合的方法,搭建了包括D-PMSG和灰色预测PI控制器的风电控制系统仿真模型。仿真结果表明,与传统的PI控制相比,灰色预测PI控制具有响应更快、鲁棒性更好、超调量更小等优点。

With the development of high performance and high quality permanent magnet materials and the development of high-power converter technology,direct-drive permanent magnet synchronous wind turbines(D-PMSG) have been increasingly used.The time-varying and non-linear characteristics of wind power systems make it difficult for traditional control methods to achieve satisfactory control results.Under the maximum power point tracking(MPPT) control,a method that combines the grey prediction with the traditional PI control is proposed to control the dual-loop of the wind turbine side.The wind power control system simulation model which includes D-PMSG and grey predictive PI controller are built.Compared with the traditional PI control,the simulation results show that the gray prediction PI control has the advantages of faster response,better robustness,and smaller overshoot.