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中文摘要：
当风速大于额定风速时,风电机组通常采用变桨距控制方式来达到风轮转速恒定,保持输出功率为额定值。目前风电机组通常采用PID控制器调节机组桨距角,但由于风速变化的随机性和风电机组的强非线性,风速变化时变桨距PID控制方法会导致风轮转速产生较大的波动。采用变桨距智能分区PID控制算法,设计相应的智能分区PID控制器。
英文摘要：
When the wind speed is over rated wind speed,megawatt wind turbine will use variable pitch control to adjust the rotor speed.This paper presents an intelligent PID control based on error＇s difference,and designs the intelligent PID controler.With the simulation.It is proved that the new method can perform effectly.
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