普通空间矢量法在级联多电平载波调制中的应用  

Applications of Common Spcae Vector Method in the Cascade Multilevel Carrier-based Modulation

作　　者：董寒 席自强[1] 俞晨光[1] 

机构地区：[1]湖北工业大学太阳能高效利用湖北省协同创新中心,湖北武汉430068

出　　处：《湖北工业大学学报》2015年第2期53-57,共5页Journal of Hubei University of Technology

摘　　要：空间矢量脉宽调制(SVPWM)的实质是加入了某种零序分量的调制方法,实现的优化是提高输出电压的范围和减小开关损耗,本质实现方式是通过改变零空间矢量的放置位置。分析在两电平中SVPWM与载波脉宽调制之间存在的关系,并通过仿真将不连续调制引入到级联多电平载波调制中,以此验证空间矢量调制在级联多电平中可以实现并且可以得到与在两电平中相似的结果。This paper speculates that the essence of the space vector pulse width modulation（SVPWM）is the injection of some kind of zero sequence component.Through the theoretical analysis,it can realize the optimizations of increasing the range of output voltage and reducing the switching loss,the essential realization method was implemented by changing the placement of zero space vector.Then the method was applied to the cascade multilevel carrier modulation.The paper analyzed the relationship between SVPWM and the carrier PWM in the two level converter,then added the discrete modulation into the cascade multilevel carrier modulation to verify that the space vector modulation can be realized in cascade multilevel and can get similar results with the two levels.

关 键 词：空间矢量调制 级联多电平 零序分量 

分 类 号：TM464[电气工程—电器]