三相四桥矩阵变换器非平衡负载运行特性研究  

Research on the capacity of four-leg matrix converter with unbalanced load

作　　者：黄松涛 郭有贵[2] 许烈[1] HUANG Song-tao;GUO You-gui;XU Lie(Advanced Electric Power Transformation and Research Center,Tsinghua University,Beijing 100084,China;School of Information and Engineering,Xiangtan University,Xiangtan 411105,China)

机构地区：[1]清华大学先进电能变换与电气化交通研究中心,北京100084 [2]湘潭大学信息工程学院,湖南湘潭411105

出　　处：《电机与控制学报》2018年第6期1-10,共10页Electric Machines and Control

基　　金：国家自然科学基金(51677106;51277156);国家留学基金(201608430006);湖南省研究生科研创新项目资助(CX2017B341)

摘　　要：为克服传统的三相三桥矩阵变换器无法实现带不平衡负载的缺陷,提出采用三相四桥矩阵变换器输出带不平衡负载的新型控制策略。首先,采用三维立体空间矢量的调制策略,实现三相四桥矩阵变换器带三相平衡负载的能力。接着,通过对负载电流的正负零序分离,提出三相四桥矩阵变换器带三相不平衡负载的控制算法。其次,仿真验证了所提出的三维立体空间矢量调制方法和负载电流正负零序分离算法的正确性。最后,在搭建的高度集成的三相四桥矩阵变换器平台上验证所提出的控制策略。仿真和实验结果表明,所提出的控制策略实现了三相四桥矩阵变换器输出带不平衡负载的能力。In order to overcome the shortcomings of traditional three-leg matrix converter(3LMC)with unbalanced load,a new control strategy for output unbalanced load with three-phase four-leg matrix converter(4LMC)is proposed.Firstly,a modulation method based on three-dimensional space vector modulation(3DSVM)was proposed to realize the capability of 4LMC to output three-phase balanced load.Then,through the positive and negative zero separation of the load current,the control strategy for 4LMC with three-phase unbalanced load was proposed.Secondly,the correctness of the proposed 3DSVM method and the load current positive and negative sequence separation algorithm were verified by simulation.Finally,the proposed control strategy was validated on a highly integrated 4LMC platform.The simulation and experimental results showed that the proposed control strategy achieves the capability of 4LMC with output unbalanced loads.

关 键 词：三相四桥矩阵变换器 正负零序分离 不平衡负载 三维空间矢量调制 新型控制策略 

分 类 号：TM46[电气工程—电器]