级联多电平STATCOM的三次谐波注入PWM法  

The PWM Technology of Third Harmonic Injection Based on the Cascade Multilevel STATCOM

作　　者：王东冬[1] 丁稳房[1] 苏威[1] 李志鹏[1] 孙青[2] 

机构地区：[1]湖北工业大学电气与电子工程学院,湖北武汉430068 [2]湖北省电力公司襄阳供电公司,湖北襄阳441000

出　　处：《湖北工业大学学报》2015年第1期15-17,35,共4页Journal of Hubei University of Technology

摘　　要：讨论了一种优化的脉宽调制方法,即三次谐波注入法,应用在级联H桥型STATCOM的主电路中,使直流电压利用率和开关损耗两个指标同时优化。首先阐述了三次谐波注入法的基本原理,再通过仿真对比试验得出这种优化方法可以提高调制比最高至1.15,进而提高直流电压利用率。This paper discussed a technology of optimization of pulse width modulation,the third harmonic injection technique,by which applied in cascaded H bridge main circuit of STATCOM,both the utilization rate of dc voltage and switching loss of two indicators could be optimized.This paper first expounded the basic principle of the third harmonic injection technique.Through the simulation experiment it then concluded that this optimization technology can improve the modulation ratio up to 1.15,and improve the utilization rate of DC voltage.

关 键 词：静止同步补偿器 脉宽调制技术 三次谐波注入法 

分 类 号：TM761[电气工程—电力系统及自动化]