Integral Variable Structure Current Control of DFIG-based Wind Turbines near Cut-in Speed

摘要：

Based on the grid voltage orientated vector control technique,a novel integral variable structure controller for current control of variable speed doubly fed induction generator (DFIG) wind turbines near cut-in wind speed is proposed.The proposed current controller can not only ensure generators’ safe cut-in switches to the grid,but also maximum energy capture after switch motion without any regulations.By these,simulations of a 1.5 MW DFIG-based wind turbine near cut-in wind speed are separately conducted under integral variable structure control (IVSC) and PI control.The results show that IVSC strategy,which behaves better dynamic response,lesser static error,smaller controller output dithering,stronger global robustness against generator parameters uncertainty and grid voltage fluctuation,as also as none controller regulation after switch operations,obviously preponderates over traditional PI control for DFIG-based wind turbines near cut-in speed.

关键词： DFIG-based wind turbines no-load cut-in control maximum energy capture control grid voltage orientated integral variable structure control(IVSC).

作者: Chang-liang Xia Hui-min Wang Zhan-feng Song

作者单位: Department of Electrical Engineering and AutomationTianjin University,Tianjin,China Department of Electrical Engineering and Automation Tianjin University,Tianjin,China

会议类型: 国际会议

会议名称: International Conference on Modelling,Identification and Control(模拟、鉴定、控制国际会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）