基于前馈补偿方位角权系数的分程独立变桨距控制研究  

A CONTROL METHOD FOR SPLIT RANGE INDIVIDUAL PITCH BASED ON FEED-FORWARD AZIMUTH ANGLE WEIGHT NUMBER ASSIGNMENT

作　　者：姚兴佳[1] 刘玥[1] 郭庆鼎[1] 

机构地区：[1]沈阳工业大学风能技术研究所,沈阳110023

出　　处：《太阳能学报》2012年第4期532-539,共8页Acta Energiae Solaris Sinica

基　　金：国家科技支撑计划(2006BAA01A03)

摘　　要：依据风速特性及桨叶的空气动力学分析得到独立变桨距控制的基本控制规律,提出基于前馈补偿的方位角权系数分程独立变桨距控制,此控制方法采用方位角权系数分配分别对3个桨叶的桨距角进行调整,实现独立变桨距控制,然后根据前馈补偿理论对变桨距过程进行分程独立变桨距控制。在Matlab中进行仿真。仿真结果表明,该控制方法不仅可实现风力机的独立变桨,在稳定输出功率的同时减小桨叶的拍打振动,且可避免由于全程独立变桨距桨叶调节频繁所引起的电动变桨执行电机因过热损坏的问题。控制方法简单,更适合用于独立动作的电动变桨距执行机构。The individual control law was obtained by analyzing of wind characteristics and wind turbine aerodynamics. A control method for split range individual pitch was proposed based on feed-forward compensator azimuth angle weight number assignment. The separate distribution for pitch angle of blades using azimuth angle weight number assignment was adopted to achieve individual pitch control. Then, the split range individual pitch control with feed-forward compensator was used to control wind turbine. The simulation results show that this control strategy can make the output power keep stable and the flapwise fluctuation be reduced at the same time. Moreover, the method can prevent the blades from adjusting frequently and the actuator motor superheating damage. The method is easy to control and more suitable for electric pitch regulated mechanism.

关 键 词：风力机 独立变桨距控制 前馈补偿 方位角权系数 分程变桨 

分 类 号：TM614[电气工程—电力系统及自动化]