不平衡电网下Vienna整流器无差拍预测控制  

Deadbeat Prediction Control of Vienna Rectifier Under Unbalanced Power Grid

作　　者：曹穆 许嘉沄 王珊珊 季嘉伟 CAO Mu;XU Jia-yun;WANG Shan-shan;JI Jia-wei(Marine Design&Research Instiute of China,Shanghai 20001l,China;不详)

机构地区：[1]中国船舶及海洋工程设计研究院,上海200011 [2]上海船舶设备研究所,上海200031 [3]南京理工大学,江苏南京210094

出　　处：《电力电子技术》2022年第4期4-6,11,共4页Power Electronics

摘　　要：无差拍预测直接功率控制(DBP-DPC)具有控制简单、动态响应快等优点,但由于Vienna整流器在电网不平衡时其运行范围会受到限制,所以传统DBP-DPC并不适用于电网不平衡的场合。这里主要针对Vienna整流器在不平衡电网下的DBP-DPC展开研究。首先根据电网的不平衡程度将电网分为两类,并分别采用两种不同的控制目标,在此基础上提出一种多目标补偿DBP-DPC方法,针对不同的控制目标采取不同的功率补偿,从而拓宽了Vienna整流器在不平衡电网下的稳定工作范围,最后通过实验验证了所提控制方法的有效性。Deadbeat prediction direct power control(DBP-DPC)has the advantages of simple control and fast dynamic response.However,because the operating range of the Vienna rectifier is limited when the grid is unbalanced,the traditional DBP-DPC is not suitable for unbalanced grids.This paper mainly focuses on the DBP-DPC of the Vienna rectifier under unbalanced power grid.Firstly,the power grid is divided into two categories according to the unbalanced degree of power grid,and two different control objectives are adopted respectively.On this basis,a DBP-DPC with multi-object compensation is proposed,in which different power compensation is adopted for different control objectives.Therefore,the stable operating range of the Vienna rectifier under unbalanced power grid is broadened.Finally,the effectiveness of the proposed control method is verified by experiments.

关 键 词：整流器 不平衡电网 无差拍预测直接功率控制 多目标补偿 

分 类 号：TM461[电气工程—电器]