风力发电机组桨距角鲁棒控制器的设计与仿真.pdfVIP

风力发电机组桨距角鲁棒控制器的设计与仿真 刘吉宏 , 吕跃刚 ,徐大平 (华北电力大学控制科学与工程学院 ,北京 102206) 摘要 :在空气动力学原理基础上建立了变浆距风力发电机组非线性数学模型 , 以此为基础采用基于动态逆的非线性内模控 制方法设计了风力发电机组在额定风速以上工作时的桨距角鲁棒控制律 , 以使输出功率维持在额定值附近 。设计是针对风 力机的非线性数学模型进行的 ,克服了基于局域近似线性化模型设计方法的缺点 ,适应工况点大范围变动的情形 ,而且对系 统参数摄动具有良好的鲁棒性 ,求解过程相对比较简单 。以一台额定功率为 300kW 的实际风力发电机组为实例进行了对 比仿真 ,结果表明了该方法能够满足控制要求 ,具有较好的动 、静态特性和鲁棒性 。 关键词 :非线性动态逆 ; 内模控制 ;桨距角控制 ;风力发电;鲁棒控制 ;恒功率 中图分类号 : TP273; TM 6 14 　　文献标识码 : A The P itch Robu st Con troller D esign and S im ula tion of W ind Turb ine Power Sy stem L IU J i - hong, LV Yue - gong, XU D a - p ing ( Schoo l of Con tro l Science Engineering,North Ch ina E lectric Power U n iversity, B eij ing 102206, Ch ina) A BSTRACT: The non linear m athem atical model of variab le p itch w ind turb ine power system is e stab lished based on the aerodynam ic s p rincip le. On the ba sis of th ismodel, the non linear internal model contro l m ethod ba sed on dynam ic inversion is app lied to de sign the p itch robu st con tro ller of the w ind turb ine power system wh ich run s above the rated w ind sp eed to m aintain ou tp ut power steady around the rated value. The de sign is based on the non linear m athem atic model of w ind turb ine system and overcom e s the disadvan tage of local app roxim ate linearization m ethod, so th is m eth od is su itab le for the large range change of op eration point. Fu rthermore, it has better robu stness to the system p aram eter p ertu rbation and simp le solution p rocess. The con tra stive simu lation is carried ou t on a real w ind turb ine w ith 300kW rated power and the resu lt show s that th ism ethod can sat