级联多电平逆变器在STATCOM的应用研究  

Study of STATCOM based on cascaded multilevel inverter with phase-shifted SPWM

作　　者：许湘莲[1] 邹云屏[1] 丁凯[1] 王成智[1] 金红元[1] 

机构地区：[1]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《武汉大学学报（工学版）》2005年第4期34-37,41,共5页Engineering Journal of Wuhan University

基　　金：国家自然科学基金资助项目(50277017)

摘　　要：随着多电平变换器在高压大功率方面的广泛应用,针对目前静态同步补偿器(STATCOM)存在的问题,提出了将级联多电平逆变器作为STATCOM的主拓扑,运用相移SPWM(PSSPWM)进行调制的解决方案,该方案既能省去庞大笨重的变压器,减小功耗;还可以成倍提高等效载波频率,降低输出谐波含量.文章详细阐述了其工作原理和控制方法,并通过MATLAB仿真实验验证了方案的可行性.As the broad application of multilevel inverters in high-power area, a cascaded multilevel voltage-source inverter with phase-shifted SPWM （PSSPWM） switching scheme is proposed to be used as a static synchronous compensator （STATCOM）, which can eliminate the bulky and weighty transformers and reduce power loss. In addition the equivalent carrier frequency can be raised by double; and output harmonics will be diminished compared the STATCOM being put into operation. The operating principle and control methods are analyzed in detail; and the feasibility is validated by simulation with MATLAB.

关 键 词：相移SPWM 级联 多电平逆变器 静态同步补偿器 

分 类 号：TM464[电气工程—电器]