基于独立变桨距技术的风力发电机组载荷控制研究  

RESEARCH ON THE LOAD CONTROL OF WIND TURBINES BASED ON INDIVIDUAL PITCH TECHNOLOGY

作　　者：鲁效平[1,2] 顾海港[1] 林勇刚[1] 李伟[1] 刘宏伟[1] 

机构地区：[1]浙江大学流体动力与机电系统国家重点实验室,杭州310027 [2]济南轨道交通装备有限责任公司,济南250022

出　　处：《太阳能学报》2011年第11期1591-1598,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金重点项目(50735004);国家自然科学基金(50975253)

摘　　要：研究了基于独立变桨距技术的风力发电机组的载荷控制,研究方法主要从空气动力学入手,建立了风力发电机组独立变桨距系统的多输入多输出线性化模型,利用d-q坐标变换将旋转坐标系下的载荷转换到固定坐标系下,设计模糊控制器,对d轴和q轴的载荷分量分别采用模糊PID控制。为了检验该控制方式的效果,在半物理实验平台上进行相应的仿真实验,结果显示独立变桨距控制技术可有效消除风力机上的不平衡载荷,与统一变桨距控制相比,叶轮的俯仰力矩最大峰值减少68.1%,偏转力矩的最大峰值减少52.3%,同时也可以看出,采用独立变桨距技术后对功率的输出影响不大。In the paper, a MIMO linear model of wind turbine individual pitch system was established based on aerodynamics, and the loads of blade roots ware transferred into a mean value and variations on two orthogonal axis using d-a axis transformation. Fuzzy PID controllers were designed to control the loads components on the two orthogonal axes. To verify the controller, a semi-physical test bed has been built, and the test results show the individual controller can eliminate the imbalance loads effectively. Compare to collective pitch control, the for-aft torque is decreased 68.1%, yaw torque is decreased 52.3% . and the value of outnut power changes little.

关 键 词：风力发电机组 载荷控制 独立变桨距 模糊PID d-q坐标变换 

分 类 号：TK8[动力工程及工程热物理—流体机械及工程]