电力系统自动化Issue(21)：58-65,8.DOI:10.7500/AEPS20130714013
基于离散状态观测器的H桥级联STATCOM无差拍控制
Dead-beat Control of H-bridge Cascaded STATCOM Based on Discrete State Observer
摘要
Abstract
With such advantages as low loss,fast dynamic response,small size and low harmonic content,the H-bridge cascaded synchronous compensator (STATCOM) has become an important development direction of the dynamic reactive power compensation equipment.In this paper,the dead-beat control algorithm is deduced via an analysis of the working principle and mathematical model for the STATCOM.To improve the real-time character of the dead-beat control algorithm, eliminate the influence of the reference voltage lag by one beat and reduce the current harmonic content of the STATCOM,a discrete state observer is constructed which can be used to predict the value of the reference command current.To avoid the error of the STATCOM actual output voltage which can be calculated by the dc side reference voltage of capacitance,the discrete sliding form observer is constructed which can be used to observe the actual output voltage of the STATCOM. Simulation and experimental results show that the algorithm can accurately predict the value of reference command current to improve the dead-beat control performance of the STATCOM.关键词
H 桥级联/静止同步补偿器/无差拍控制/离散状态观测器/电流预测/离散滑模观测器Key words
H-bridge cascaded/static synchronous compensator (STATCOM)/dead-beat control/discrete state observer/current prediction/discrete sliding form observer引用本文复制引用
徐榕,于泳,于雁南,杨荣峰,徐殿国..基于离散状态观测器的H桥级联STATCOM无差拍控制[J].电力系统自动化,2014,(21):58-65,8.基金项目
国家自然科学基金重点项目(51237002) （51237002）
台达电力电子科教发展计划重大项目(DREM2012001)。This work is supported by National Natural Science Foundation of China(No.51237002)and Power Electronics Science and Education Development Program of Delta Environmental & Educational Foundation(No.DREM2012001) （DREM2012001）
