变速变桨距风力发电机组的智能控制

Intelligent Control of Wind Turbine with Variable Speed and Pitch

针对传统PI控制技术难以兼顾风力发电机组转速与输出功率之间的平衡,提出变速变桨运行控制方法。将风力发电机组的功率误差和功率误差变化率作为判断依据和控制策略,再结合模糊控制器,弥补了传统PI控制器的不足。通过Matlab仿真,结果表明:风速持续变化和瞬变时,模糊控制器都能够稳定风力发电机组的输出功率,降低电机的运行速度,同时缩短调节时间和加快变桨距执行机构的运行速度。

Considering traditional PI control technology ’ s incapability in giving consideration to the balance between wind turbine ’ s involving speed and output power , the control method which boasting of variable speed and pitch in operation was proposed to have the power error and its change rate of the wind turbine taken as the criterion and the control strategy and the fuzzy controller based to offset the shortcomings of the traditional PI controller .Matlab simulation shows that when the wind speed constantly or transiently changes , the fuzzy con-troller can stabilize the wind turbine ’ s output power , bring down motor speed , shorten regulation time and ac-celerate variable speed and pitch ’ s actuator .