Fast Model Predictive Control for Multilevel Cascaded H-Bridge STATCOM With Polynomial Computation Time
Fast Model Predictive Control for Multilevel Cascaded H-Bridge STATCOM With Polynomial Computation Time
复制标题
计算时间为多项式的多级级联h桥STATCOM快速模型预测控制
DOI：
10.1109/tie.2016.2572662
复制
发表时间：
2016-05
影响因子：
7.7
通讯作者：
Yonglei Zhang;Xiaojie Wu;Xibo Yuan;Yingjie Wang;P. Dai
中科院分区：
文献类型：
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作者：
Yonglei Zhang;Xiaojie Wu;Xibo Yuan;Yingjie Wang;P. Dai
To solve the issue of exponentially increasing computational burden of finite control set model predictive control (FCS-MPC) for multilevel converters, a fast MPC scheme for multilevel cascaded H-bridge STATCOM is presented. The proposed approach consists of three steps. First, with the partially stratified optimization approach, the multiobjective programming of MPC is divided into two suboptimization problems, i.e., current-control MPC and voltage-balancing MPC. Second, a dynamic programming algorithm is proposed for the optimization of current-control MPC. Third, a mixed algorithm, which combines dynamic programming and greedy algorithm (0-1 programing), is proposed to select the optimal switching combination from all the redundant switching combinations for the voltage balancing MPC achieving a global optimization. Through the analysis of the time complexity, with the proposed scheme, the total computation of FCS-MPC can be reduced to polynomial time from exponential time. The proposed approaches will not deteriorate the control performance. The control performance is validated by simulation results and the effectiveness is further demonstrated by implementing the algorithm on a low-cost DSP (TMS320F28335) in real time.
