链式STATCOM反馈线性化控制方法的研究  

Study of Linearization Via Feedback Control Method for Cascade STATCOM

作　　者：庞婷[1] 曾光[1] 杨波[1] 

机构地区：[1]西安理工大学,自动化与信息工程学院,陕西西安710048

出　　处：《电力电子技术》2016年第1期53-55,65,共4页Power Electronics

基　　金：陕西省重点学科建设专项资金资助项目(105-00X901)~~

摘　　要：链式静止同步补偿器(STATCOM)是一个强耦合、非线性系统。针对链式STATCOM控制方法的问题,对星形连接方式下的链式STATCOM进行数学建模,并详细推导了反馈线性化控制方法下的反馈线性化控制规律,给出了系统控制框图及其具体的控制器参数设计。将反馈线性化控制方法与传统线性PI控制进行仿真和实验对比,结果表明反馈线性化控制方法具有更快的动态响应速度。针对电容电压平衡问题,采用电压外环和独立均压控制相结合的方法,使得电容电压无论在何种工况下均能保持固定值不变且相互平衡,同时通过仿真和实验验证,表明平衡策略的有效性。Cascade static synchronous compensator（STATCOM） is coupling and nonlinear.Against the issue of the control method for STATCOM,the mathematics model is established,the law of linearization via feedback is deduced,the overall control block and the design of controller are given.The performances of linearization via feedback and traditional PI are compared by simulation and experiment,the results show that linearization via feedback has quicker dynamic response.For the balance of capacitor voltage,the outer loop and individual control are combined to ensure that the capacitor voltage are constant under any work condition and the voltage of each H-bridge are balanced.The simulation and experimental results both show that the method is feasible and effective.

关 键 词：静止同步补偿器 反馈线性化控制 电容电压平衡 

分 类 号：TN715[电子电信—电路与系统]