CAJ | 학술논문

研究了风切变场中风力发电系统的独立变桨鲁棒控制问题。针对风切变对额定风速以上恒功率控制的影响，设计了一种额定风速以上独立变桨距鲁棒控制器，该控制器由基于自抗扰控制的集中桨距角控制器和基于扰动补偿的独立桨距角控制器叠加而成，其中统一变桨控制器能及时补偿由于风速变化，风力机参数变化导致的系统模型不确定性，并且能有效抑制电磁转矩扰动；独立桨距角控制器能有效抑制风切变引起的转速波动以及叶片拍打方向的机械载荷，对统一变桨信号的频率和幅值变化的鲁棒性较好。理论分析和仿真结果表明了本文所提方法的有效性。
연구료풍절변장중풍력발전계통적독립변장로봉공제문제。침대풍절변대액정풍속이상항공솔공제적영향，설계료일충액정풍속이상독립변장거로봉공제기，해공제기유기우자항우공제적집중장거각공제기화기우우동보상적독립장거각공제기첩가이성，기중통일변장공제기능급시보상유우풍속변화，풍력궤삼수변화도치적계통모형불학정성，병차능유효억제전자전구우동；독립장거각공제기능유효억제풍절변인기적전속파동이급협편박타방향적궤계재하，대통일변장신호적빈솔화폭치변화적로봉성교호。이론분석화방진결과표명료본문소제방법적유효성。
Constant power control is needed to mitigate wind shear effects when wind energy conversion systems are subjected to wind shear above their rated wind speed tolerances;therefore,robust blade pitching controllers are essential.The issues of individual blade pitch control for wind energy conversion systems located in wind shear fields are discussed.Our proposed collective blade pitching controller uses an active disturbance rejec-tion control method and three individual blade pitching controllers with disturbance compensation technology. In our design,the collective blade pitching controller compensates for the uncertainties produced by wind speed variation and wind turbine parameters variation,in addition to effectively restraining the electromagnetic torque ripples.The individual pitching controllers restrain the speed ripples and the flap-wise aerodynamic loads and are robust in withstanding changes to the frequency and amplitude of the collective pitching signal. The theoretical analysis and simulation results clearly demonstrate the success of the combined collective and individual blade pitching controllers.