基于模型预测控制的五相双级矩阵变换器共模电压抑制  

Common Mode Voltage Reduction Based Model Prediction Control for Five Phase Two Stage Matrix Converters

作　　者：沙豪杰 耿强[1] SHA Haojie;GENG Qiang(School of Electrical Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学电气工程学院,天津300387

出　　处：《电气传动自动化》2022年第4期18-24,51,共8页Electric Drive Automation

基　　金：天津市教委科研计划项目重点项目(2019ZD09)。

摘　　要：模型预测电流控制(MPCC)被广泛应用于多相变换器系统,当传统MPCC算法应用于五相双级矩阵变换器时,输出共模电压(CMV)幅值较大,并且因为采用单矢量模式,系统输出稳态性能差。针对以上问题本文提出一种改进的MPCC算法,首先,五相逆变级采用大矢量和反向小矢量合成虚拟矢量(Virtual Vector),将得到的虚拟矢量作为控制集以减小CMV幅值和消除xy子空间下谐波分量,但由于控制集中缺少了基本零矢量,通过构造虚拟零矢量进行替代。然后对所提算法与传统算法进行仿真比较,结果表明所提算法可以有效抑制CMV,并消除xy子空间下的谐波分量。Model Predictive Current Control(MPCC)is widely used in multi-phase converter systems.When the traditional MPCC algorithm is applied to a five-phase Two-Stage Matrix Converter(TSMC),the output Common Mode Voltage(CMV)amplitude is large,and because of Using single vector mode,the system output steady-state performance is poor.Aiming at the above problems,this paper proposes an improved MPCC algorithm.First,the five-phase inverter stage uses a large vector and a reverse small vector to synthesize a virtual vector,and the obtained virtual vector is used as a control set to reduce the CMV amplitude and The harmonic components in the xy subspace are eliminated,but since the fundamental zero vector is missing in the control set,a virtual zero vector is constructed to replace it.Then the proposed algorithm is compared with the traditional algorithm.The results show that the proposed algorithm can effectively suppress the CMV and eliminate the harmonic components in the xy subspace.

关 键 词：五相双级矩阵变换器 模型预测电流控制 虚拟电压矢量 共模电压 

分 类 号：TM341[电气工程—电机]