Vienna整流器模型预测电流控制优化方案研究  

Research on Optimization Scheme for Model Predictive Current Control of Vienna Rectifier

作　　者：张锦[1] 於锋[2] 高磊[1] 张贞艳[1] ZHANG Jin;YU Feng;GAO Lei;ZHANG Zhenyan(School of Mechanical and Electrical Engineering,Suqian College,Suqian 223800,China;School of Electrical Engineering,Nantong University,Nantong 226019,China)

机构地区：[1]宿迁学院机电工程学院,宿迁223800 [2]南通大学电气工程学院,南通226019

出　　处：《电源学报》2020年第5期110-117,共8页Journal of Power Supply

基　　金：江苏省第十四批“六大人才高峰”人才资助项目(GDZB-167);宿迁市科技计划资助项目(H201921);江苏高校品牌专业建设资助项目(PPZY2015C252)。

摘　　要：针对Vienna整流器固有的中点电位波动问题,提出了一种基于冗余短矢量预判的模型预测电流控制MPCC(model predictive current control)方法。该方法可有效消除权重系数,进而解决MPCC权重系数调节困难的问题。首先,分析了Vienna整流器的运行机理,并构建了其在稳态条件下基于同步旋转坐标系的数学模型。其次,详细分析了Vienna整流器直流侧电容中点电位波动的原因,并提出了抑制中点电位波动的方案。进一步,为了减小控制器计算负担,研究了MPCC的优化方案。最后,仿真及实验结果证明了所提控制方法的有效性与可行性。To suppress the neutral-point voltage fluctuations that exist inherently in a Vienna rectifier,a model predictive current control(MPCC)method is proposed based on redundant short-vector pre-judgment.Owing to the elimination of weighting factors,the problem of tuning work in the conventional MPCC method is addressed.First,the operating mechanism of the Vienna rectifier is analyzed,and its mathematical model is established based on synchronous rotating coordinates under steady-state conditions.Then,the neutral-point voltage fluctuations of the DC-side capacitor in the Vienna rectifier are analyzed in detail,and the control scheme for suppressing the neutral-point voltage fluctuations is put forward.Furthermore,an optimization method of MPCC is studied for reducing the computing burden of the controller.Finally,simulation and experimental results proved the effectiveness and feasibility of the proposed control scheme.

关 键 词：VIENNA整流器 中点电位波动 冗余短矢量 模型预测电流控制 

分 类 号：TM461[电气工程—电器]