Sliding Mode Control of Pitch Angle for direct driven PM Wind Turbine
作者单位：School of Electric ＆ Information EngineeringHunan University of Technology
会议名称：《第26届中国控制与决策会议》
主办单位：NE Univ;IEEE Ind Elect Chapter;IEEE Harbin Sect Control Syst Soc Chapter;Hunan UnivTechnol;Cent S Univ;IEEE;IEEE Control Syst Soc;Syst Engn Soc China;Chinese Assoc Artificial Intelligence;Chinese Assoc Automat;Tech Comm Control Theory;China & Cent S Univ
会议日期：2014年
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
基 金：supported by the national natural science fund(61074067,21106036) Hunan Provincial Natural Science Foundation of China(13JJ3110) Education department of Hunan province outstanding young scientific research fund project(11B038) the Construct Program of the Key Discipline in Hunan Province
关 键 词：wind power system pitch-angle chattering free sliding mode control
摘 要：The power generated by wind turbines appears to be instable at high rate speed due to the stochastic nature of wind speed, system lagging and nonlinearities, and involving time-variable parameters. To improve the dynamic performance in the operation region of constant power output, a sliding mode variable structure controller based on the analysis of the features model of the variable pitch and the speed wind turbine generator system is proposed. Moreover, to eliminate the chattering problem caused by the sign function in the traditional controllers, a quasi-sliding mode controller within the boundary layer is introduced. The pitch control model of a 2MW permanent magnet direct-drive wind power system is built and simulated. The simulation results show that the sliding mode control with quasi sliding mode can cope with traditional chattering problems in variable structure systems, and has such advantages as strong robustness to changes in parameters and fast response.