双馈感应发电机调速风力机  

Doubly Fed Induction Generator for Wind Turbines

作　　者：魏毅立[1] 李华德[1] 吴振奎[2] 尚德舜[1] 

机构地区：[1]北京科技大学信息工程学院,北京100083 [2]包头钢铁学院信息学院,包头014010

出　　处：《北京科技大学学报》2003年第6期580-583,共4页Journal of University of Science and Technology Beijing

基　　金：内蒙古科技厅攻关项目(No.20030502)

摘　　要：研究了低成本宽范围双馈感应电机调速风力机,根据数学模型导出矢量控制系统,讨论了三种四象限功率变换器。该风力机在低风速时桨距角不变,保持最佳叶尖速比以获得最大风能;在高风速时储存或释放部分能量,桨距角仅完成限制最大输出功率,减少机械应力,风能储存在风力机机械惯性中,减少力矩冲击。A viable alternative to adjust speed over a wide range at minimal cost using a doubly fed induction generator for wind turbines was introduced. The vector control system by DFIG mathematic models was analyzed. Three kinds four-quadrant power converters were discussed. During a low speed, the pitch angle is a constant, wind turbines keep on the optimum speed ratio between the pitch and wind so as to absorb the maximum energy. During a high speed, wind turbines absorb or release partial energy, and the mechanical stress were less.

关 键 词：双馈感应发电机 调速风力机 矢量控制 功率变换器 桨距角 

分 类 号：TM315[电气工程—电机]