摘要
提出了一种风速前馈与模糊PID结合的变桨距控制方法。引入平滑函数模型,根据功率误差得出合适的平滑函数因子,从而调节模糊控制器与PID控制器输出所占比重。将测量的风速通过模糊前馈控制器给出合适的桨距角补偿角度。仿真结果表明,该方法能够避免直接切换控制器而导致桨距角输出不连续、给系统带来震荡的问题,且能有效维持风力发电机组输出功率的稳定性。
An improved pitch control method based on wind speed feed-forward and fuzzy PID is presented. By introducing a smoothing function model, a suitable smoothing function factor is ob-tained to adjust the proportion of the fuzzy controller and PID controller according to the power er-ror. A suitable pitch angle compensation angle is given by a fuzzy feed-forward controller for the measured wind speed. The simulation results show that the proposed method can avoid the unstable problem caused by the switch of controllers？ and the stability of the output power of the wind tur-bine can be effectively maintained.
出处
《上海电机学院学报》
2018年第1期27-32,共6页
Journal of Shanghai Dianji University
基金
国家自然科学基金项目资助(1304200)
关键词
模糊控制
风速前馈
平滑函数
变桨控制
fuzzy control
wing speed feed-forward
smooth function
pitch control
