大型风电机组模糊滑模鲁棒控制器设计与仿真  

Design and Simulation of Fuzzy Sliding-mode Robust Controller for Large Wind Generating Unit

作　　者：孔屹刚[1] 王志新[1] 

机构地区：[1]上海交通大学电气工程系,上海市闵行区200240

出　　处：《中国电机工程学报》2008年第14期136-141,共6页Proceedings of the CSEE

基　　金：上海市科技发展基金项目(062158017)

摘　　要：目前大型风力发电机组(功率在1 MW以上)普遍采用变速-变桨距控制机构,其主要目的是提高风机的响应速度,同时获得最大功率。但是由于风速和风向是时刻变化的,所以风机发出的功率也是时刻变化的。另外,由于一些不确定因素的存在,整个风能转换系统具有很强的非线性。模糊控制无需精确的数学模型,滑模控制能提高系统的鲁棒性和稳定性。该文设计了一种基于模糊滑模控制理论的控制器,同时使用仿真软件建立了1.5 MW变速-变桨距风机仿真模型。仿真结果表明,模糊滑模控制器可使风机系统减小静态误差,弥补非线性带来的影响,且具有很好的鲁棒性。An increasing number of larger wind turbines （1 MW and up） are being developed with a variable speedvariable pitch control mechanism. The main objective of using a variable speed-variable pitch control strategy is to improve response speed and get maximum energy. But the power generated by wind turbine changes rapidly because of the continuous fluctuation of wind speed and direction. At the same time, wind energy conversion systems have strong nonlinear characteristics with many uncertain factors. Fuzzy control needs no accurate mathematical model and sliding-mode control can provide a good robustness and stability of system. In the paper a new kind of state controller is proposed by fuzzy sliding-mode control theory and the simulation model of a 1.5 MW variable speed-variable pitch wind turbine is established with the simulation software. Simulation results show the fuzzy slidingmode controller may also eliminate the steady state error, compensate the nonlinearity and have excellent robustness.

关 键 词：风机 变速-变桨距机构 模糊控制 滑模控制 仿真 

分 类 号：TM315[电气工程—电机] TM614