变转速风力机额定风速以上的非线性控制——恒功率输出控制问题  

Nonlinear Control of a Variable Speed WT System on ARWS ——Power Limitation Problem

作　　者：包能胜[1] 姜桐[1] 陈庆新[1] 

机构地区：[1]汕头大学能源与环境研究所,汕头515063

出　　处：《控制理论与应用》1999年第5期747-750,共4页Control Theory & Applications

摘　　要：讨论了在额定风速以上时变转速风力机的控制问题，系统采用基于微分几何理论下的桨距角和触发角双输入控制．变转速风机是一个带有大范围风速的多输入多输出非线性系统，通过坐标变换，使非线性系统转化为一个标准的线性系统．直接利用所推导的仿射非线性机理模型，在额定风速以上，采用微分几何精确线性化理论，通过坐标转换，实现变转速风机全局精确线性化控制，给出了反馈控制算法。This paper addresses the control problem of a variable speed wind turbine system in above rated wind speed which uses pitch angle control of the blades and delay angle control of the rectifier,with special emphasis on the differential geometric theory.Wind turbine system has typical nonlinear factor with stochastic disturbance.A nonlinear system can be described by a new linear system with the differential geometry coordinates transformations.In this paper,first,the nonlinear theoretical model of the variable speed WT system is built in.Then,the nonlinear model is linearized globally by differential geometry transmission and a new linear model is obtained.The nonlinear model can be described as a new linear system.Finally,a nonlinear controller is designed relying on the base of linear quadratic optimal algorithm of the new linear system.

关 键 词：变转速风力机 额定风速 非线性控制 风力机 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] TP273[自动化与计算机技术—检测技术与自动化装置]