Optimal Predictive Power Control of PWM Rectifier under Nonideal Grid Conditions

被引：0
|
作者：
Li S. [1 ]
Ma W. [1 ]
Guo Q. [1 ]
Zhang L. [1 ]
Wei S. [1 ]
Huang Y. [1 ]
机构：
[1] Chongqing Energy Internet Engineering Technology Research Center, Chongqing University of Technology, Chongqing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 18期
关键词：
extended reactive power; Predictive power control; PWM rectifier; switching sequence optimization; unbalanced grid voltage;
D O I：
10.19595/j.cnki.1000-6753.tces.211924
中图分类号：
学科分类号：
摘要：
Model predictive power control (MPPC) is based on the minimization principle of the cost function, which selects the optimal switching state to act on the system. However, the grid side current of the MPPC will be distorted seriously under unbalanced grid voltage conditions, which affects the output performance of PWM rectifier. To address this problem, the paper applies the new definition of extended reactive power to MPPC to obtain constant active power and grid-side sinusoidal current without power compensation algorithms. In addition, aiming at the problems of conventional MPPC (C-MPPC), such as variable switching frequency and large system computation, an optimized MPPC (O-MPPC) is proposed. By optimizing the finite control set, the system computation is reduced, and the selected vector switching sequence is reorganized for optimization and the action time of each vector is calculated by the multi-vector synthesis method. As a result, the problem of the unstable switching frequency of C-MPPC is solved, and the system control performance is enhanced. The feasibility and superiority of the proposed optimized control method are verified through comparative experiments with C-MPPC. © 2022 Chinese Machine Press. All rights reserved.
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页码：4745 / 4756
页数：11
相关论文
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