水平轴失速型风力发电机组非线性鲁棒控制  

NONLINEAR ROBUST VARIABLE PITCH CONTROL OF THE STALL HORIZONTAL WIND POWER GENERATOR SYSTEM

作　　者：刘松[1] 李东海[1] 包能胜[2] 王传峰[1] 

机构地区：[1]清华大学热能工程系热科学与动力工程教育部重点实验室,北京100084 [2]汕头大学能源研究所,汕头515063

出　　处：《太阳能学报》2009年第7期966-971,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(50376029)

摘　　要：基于分散鲁棒控制理论,结合高增益观测器,针对大型风力发电机组变桨距控制提出了一种新的非线性鲁棒控制方案(ONRC)。该方法不依赖于对象的精确模型,通过积分环节对系统的非线性部分、不可测部分和扰动(即扩张状态)进行估测,能够提高风力发电机组变桨距控制系统的性能鲁棒性,改善系统在恒功率输出运行区域内的动态性能,而且设计简单易于实现,参数整定容易。同时,在阵风、阶跃风及随机风的作用下,对ONRC、精确反馈线性化(EFL)、PID进行数字仿真实验,结果表明,ONRC具有较好的动态性能和性能鲁棒性。A new nonlinear robust controller with high gain observer（ONRC） was proposed for variable pitch control of large wind power generator, based on nonlinear robustness theory. It is easy to be designed and implemented for ONRC which don＇t depend on the exact system model. The expanded state which includes nonlinear part, unmeasured part and disturbance can be estimated through an integration part. The robustness of wind turbine controller and the dynamic performance in the field of firm output power could also be improved. Digit simulations have been carried out under different wind speeds with PID controller, exact feedback linearization （EFL） controller and ONRC. The results showed that ONRC has better dynamic performance and robustness.

关 键 词：变桨距 非线性 性能鲁棒性 高增益观测器 

分 类 号：TK8[动力工程及工程热物理—流体机械及工程]