CAJ | 학술논문

高风速时,为平衡大型风力机所受推力载荷,利用无模型控制不依赖系统数学模型的特性,针对难以准确建模的非线性风力机组,推导了风力机无模型输入输出关系方程.通过利用输入输出实测数据,在线递推估计风力机待估参数,给出了在线估值算法,导出了无模型独立变桨控制律的形式.在Matlab/Simulink上搭建了一3 MW风力机组仿真平台,验证了无模型控制律的正确性和有效性.与传统PI独立变桨距载荷控制相比,在随机风和突变渐变风下,所给出的无模型控制方法,既能使载荷得到较好平衡,又能使风力机桨叶动作频率、幅度小.
고풍속시,위평형대형풍력궤소수추력재하,이용무모형공제불의뢰계통수학모형적특성,침대난이준학건모적비선성풍력궤조,추도료풍력궤무모형수입수출관계방정.통과이용수입수출실측수거,재선체추고계풍력궤대고삼수,급출료재선고치산법,도출료무모형독립변장공제률적형식.재Matlab/Simulink상탑건료일3 MW풍력궤조방진평태,험증료무모형공제률적정학성화유효성.여전통PI독립변장거재하공제상비,재수궤풍화돌변점변풍하,소급출적무모형공제방법,기능사재하득도교호평형,우능사풍력궤장협동작빈솔、폭도소.
When the wind speed is high, in order to balance the thrust load, using the characteristics of the model free control which does not depend on the mathematical model of the system, the relationship equation between input and output of model free wind turbine is deduced for nonlinear wind turbine units which are hard to model precisely. According to the input and output data, on-line recursive estimation of wind turbine parameters is conducted, the on-line estimation algorithm is given, and the law of model free and independent pitch control is derived. The 3 MW wind turbine simulation platform is built in Matlab/Simulink, which proves the model free control law is correct and effective. Compared with traditional PI independent pitch load control, under stochastic wind and mutant gradient wind, the model free control method can not only balance the load better, but also lessen the operate frequency and amplitude of blades of the wind turbine.