电力系统自动化2017，Vol.41Issue(16)：137-143,157,8.DOI:10.7500/AEPS20161113003
基于多步模型预测控制的模块化多电平换流器环流控制策略
Control Strategy of Circulating Current for Modular Multilevel Converters Based on Multistep Model Predictive Control
郭鹏 1何志兴 1罗安 1徐千鸣 1周发云 1岳雨霏 1周奔1
作者信息
- 1. 国家电能变换与控制工程技术研究中心(湖南大学),湖南省长沙市410082
- 折叠
摘要
Abstract
With the attractive features of modularity,low harmonic and redundancy control,modular multilevel converters (MMC) have received much attention and research in the field of middle and high voltage.To begin with,the discrete state equation is derived for MMC.A new control strategy based on multistep model predictive control is proposed for circulating current suppression existing in MMC.It can realize multistep optimal control for circulation and reduce prediction computation effectively.Firstly,single step prediction can be performed using the circulation discrete state equation,and the number of inserted submodules (SM) is then determined that meets the requirement to make multistep circulating prediction.The final optimal inserted SM number is chosen to act on the converter for circulating reduction.The proposed multistep model predictive control uses a finite control set (FCS) generated from single step prediction optimal solution,which greatly improves the efficiency by reducing the computational times of multistep prediction.Finally,the performance of the proposed control strategy is evaluated based on the 201qevel MMC time-domain simulation system in PSCAD/EMTDC.The simulation results verify the correctness and validity of the proposed control strategy.关键词
模块化多电平换流器/环流抑制/模型预测控制/多步预测Key words
modular multilevel converters/circulating suppression/model predictive control/multistep prediction引用本文复制引用
郭鹏,何志兴,罗安,徐千鸣,周发云,岳雨霏,周奔..基于多步模型预测控制的模块化多电平换流器环流控制策略[J].电力系统自动化,2017,41(16):137-143,157,8.
