多电平逆变电路的控制方法仿真研究  

STUDY ON METHOD OF THE MULTI-LEVEL LNVERTER CONTROL CIRCUIT SIMULATION

作　　者：孟彦京[1] 周斌[1] 

机构地区：[1]陕西科技大学电气与信息工程学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2010年第5期85-91,共7页Journal of Shaanxi University of Science & Technology

摘　　要：研究了各类多电平逆变器的结构和级联式逆变器的脉宽调制方法,建立了级联式逆变器的数学模型,为解决传统多电平空间矢量PWM方法复杂,难以应用于实际系统的问题,提出了一种新型多电平的SVPWM方法.为验证新方法的正确性,进行了Matlab7.0/simulink系统仿真,结果初步验证了新型多电平SVPWM方法的可行性,为多电平空间矢量PWM方法的实际应用提供了一种新的思路.Topology of multilevel converter and technique of multi-level PWM is studied in this paper.And the mathematic model of cascaded multilevel circuit is presented based on its principle analysis.Due to the large number of voltage space vectors and redundant switching states,there is a problem of computational complexity in multilevel converter,and so the utilization of multi-level inverters with the SVPWM method can not be realized.To resolve the problem,a novel SVPWM technique is proposed,and it is further analyzed in detail in this paper.In order to validate the technique,the simulation and a three-cell cascaded inverters experiment system is set up.The capabilities of the novel technique is verified by simulation and experimentation.

关 键 词：多电平逆变器 电压空间矢量 PWM控制 仿真研究 

分 类 号：TM13[电气工程—电工理论与新技术]