风电机组变桨系统无位置传感器的研究  

Research on Position Sensorless of Variable Pitch System for Wind Turbine

作　　者：韩维敏[1,2] 文金龙 刘星平[3] HAN Weimin;WEN Jinlong;LIU Xingping(College of Wind Energy Engineering,Hunan Vocational Institute of Technology,Xiangtan 411000,Hunan,China;College of Electrical and Information Engineering,Changsha University of Science & Technology,Changsha410082,Hunan,China;College of Electrical & Information Engineering,Hunan Institute of Engineering,Xiangtan 411101,Hunan,China)

机构地区：[1]湖南理工职业技术学院风能工程学院,湖南湘潭411000 [2]长沙理工大学电气与信息工程学院,湖南长沙410082 [3]湖南工程学院电气信息学院,湖南湘潭411101

出　　处：《电气传动》2019年第4期78-82,96,共6页Electric Drive

基　　金：湖南省教育厅项目(17K027)

摘　　要：由于风电变桨系统中位置传感器的安装与检修困难,无位置传感器控制是主要趋势。此外,无位置传感器控制还降低了系统成本。在传统的三闭环变桨距系统基础上引入改进的滑模-模型参考自适应(SMMRAS)的无位置传感器技术,用滑模变结构来替代传统MRAS中的PI调节,从而增加了系统的稳定性与可靠性,并对该方案进行了仿真验证。结果显示,此方案可以准确估测电机转子的位置,对风机主控系统给出的桨距角实现快速响应并跟随,在变桨系统中引入无位置传感器技术是完全可行的。The installation and maintenance of position sensor is difficult in the wind turbine pitch systems, so the sensorless control is a major trend, which can also reduce the system cost. Based on the traditional three-closed-loop (position/speed/current loop) pitch system, an improved model reference adaptive system (MRAS) sensorless technology was introduced,and the sliding mode variable structure was used to replace the traditional MRAS' s PI regulation, which increased the stability and reliability of the system. The simulation results show that this scheme can accurately estimate the position and speed for the rotor of the permanent magnet motor, and realize the fast response and follow the pitch angle given by the main control system. The introduction of sensorless technology in the variable pitch system is completely feasible.

关 键 词：变桨系统 模型参考自适应系统 滑模变结构 无位置传感器 

分 类 号：TM28[一般工业技术—材料科学与工程]