摘要
在两相同步旋转d-q坐标系下建立了配网静止同步补偿器(D-STATCOM)数学模型。针对D-STAT-COM,基于微分几何理论,提出一种基于反馈线性化内模控制策略。采用状态反馈线性化方法,实现D-STAT-COM的线性化,使得内环dq电流解耦,省去了传统双闭环控制中的电流内环PI调节器;外环采用内模控制方法设计控制器,结构简单,参数单一,便于调整。仿真结果表明,该方法比传统PI控制能更有效地提高系统稳定性,改善动态响应品质。
The mathematical model for D-STATCOM is established in the simultaneously rotary d-q coordinate system.According to the differential geometry,an internal model control strategy,based on the feedback linearization,is proposed for D-STATCOM.The state feedback linearization method is used to realize the linearization of D-STATCOM and the decoupling control of d-q current,with the omission of the PI regulator of current loop used in the traditional double-loop control.The controller in voltage loop is designed using internal model control method,with the advantages of simple structure,single parameter,and convenient adjustment.The simulation results demonstrate that the proposed method can improve system stability and dynamic response characteristics more effectively than the traditional PI control.
出处
《华东电力》
北大核心
2012年第2期216-220,共5页
East China Electric Power
基金
国家自然科学基金资助项目(50777066)~~
关键词
配电网
静止同步补偿器
反馈线性化
内模控制
解耦控制
distribution network
STATCOM
feedback linearization
internal model control
decoupling control
