Finite-time robust control for transformerless H-bridge cascaded STATCOM with star configuration  

作　　者：Xingyu Lv Bangjun Lei Shumin Fei 

机构地区：[1]Foreign Language Teaching Center,Guizhou Institute of Technology,Guiyang,People’s Republic of China [2]Key Laboratory of Power Dig Data of Guizhou Province,School of Electrical and Information Engineering,Guizhou Institute of Technology,Guiyang 550003,People’s Republic of China [3]Key Laboratory of Measurement and Control of Complex Systems of Engineering,Ministry of Education,School of Automation,Southeast University,Nanjing,People’s Republic of China

出　　处：《Journal of Control and Decision》2021年第2期106-115,共10页控制与决策学报（英文）

基　　金：supported by Guizhou Provincial Science and Technology Foundation(No.QiankeheJzi[2015]2070,Qiankehejichu[2016]1064,Qiankehejichu[2017]1074,Qiankehejichu[2018]1068,Qiankehezhicheng[2018]2164)the Chinese National Natural Science Foundation under Grant No.61563011;the Ph.D research fund of Guizhou Normal University under Grant No.11904-0514170;High level talent research project of Guizhou Institute of Technology(No.XJGC20150405).

摘　　要：This article presents a finite-time robust control(FTRC)of a transformerless STATCOM based on a cascaded multilevel H-bridge converter(CMHC)with star configuration.The FTRC is first proposed for the current loop control of a CMHC-based transformerless STATCOM by using the finite time robust control theory.Taking the parameters,perturbations and external disturbances into account and using coordinate transformation method,the nonlinear dynamic model of the CMHC-based transformerless STATCOM is transformed into a standard nonlinear port-controlled dissipative Hamiltonian(PCDH)structure.Based on the PCDH structure,an FTRC is designed for the CMHC-based transformerless STATCOM to improve the transient stability and oscillation damping of power system.Finally,the simulation results demonstrate that the FTRC has better dynamic performance and strong robustness in comparison with the passivity-based control of the CMHC-based transformerless STATCOM.

关 键 词：Cascaded H-bridge converter transformerless STATCOM finite time robust control oscillations damping transient stability 

分 类 号：TM7[电气工程—电力系统及自动化]