一种新型多电平逆变器调制方法的研究与实现  

Research and Implementation of a New Multilevel Inverter Modulation Method

作　　者：郑征[1] 闫飞[1] 邹瑾[2] 

机构地区：[1]河南理工大学,电气工程与自动化学院,河南焦作454000 [2]剑桥大学,电力工程系,电力电子组,英国剑桥

出　　处：《电力电子技术》2013年第9期11-13,共3页Power Electronics

基　　金：国家自然科学基金(51077125);河南理工大学博士基金(B2012-108)~~

摘　　要：在研究载波移相脉宽调制(PSPWM)法等多电平调制方法的基础上,基于PSPWM法的错时采样思想,采用一种新型的多电平调制方法,即单元延时叠加空间矢量脉宽调制(OTS-SVPWM)法,并将其成功应用到基于DSP+FPGA的级联H桥多电平逆变系统中。仿真与实验结果表明这种新型调制方法不仅解决了SVPWM法由于开关状态多而难以应用到多电平系统的问题,同时具有直流电压利用率高、算法简单、易于扩展等优点。Based on the research of carrier phase-shifted pulse width modulation （PSPWM） of multilevel system, this paper puts forward a new type of delay superposition of overlap time staggered space vector pulse width modulation （OTS-SVPWM） control strategy based on the sample time-staggered though of carrier PSPWM method.In addition ,it is successfully applied to cascaded H-bridge multilevel inverter system based on DSP＋FPGA.The simulation and experimental results show that this method not only solves the problem that SVPWM method is difficult to apply to the multilevel system because of the too many synthesis switch states, but also reaches to high DC voltage utilization ratio with a simple algorithm and good dynamic performance.

关 键 词：逆变器 载波移相 空间矢量脉宽调制 

分 类 号：TM464[电气工程—电器]