三电平逆变器SVPWM的死区补偿和窄脉冲处理  

The Dead-time and Narrow Pulse Compensation of Three-level Inverter Based on SVPWM

作　　者：徐华[1] 高菊玲[2] 何礼高[1] 

机构地区：[1]南京航空航天大学,自动化学院,江苏南京210016 [2]江苏农林职业技术学院,江苏句容212400

出　　处：《电力电子技术》2012年第1期26-28,共3页Power Electronics

摘　　要：以电压型三电平逆变器为例,分析了基于电压空间矢量脉宽调制(SVPWM)三电平逆变器的死区效应及窄脉冲对三电平逆变电路的影响,给出了一种根据输出电流极性修改触发脉冲,从而达到死区时间补偿的方法。在最小脉宽处理区域,通过重新确定起始矢量处理方法避免窄脉冲。仿真和实验结果验证了理论的可行性。Taking the voltage type three-level inverter as an example,the dead time and narrow pulse effect of the throe-level inverter based on the space vector pulse width modulation （SVPWM） are analyzed and a way recomposing the driving pulse according to the phase of current for the dead time compensation is provided.In the region of nar- row pulse,the beginning vector is rehandled to avoid the narrow pulse.The Matlab simulation and experimental results prove the feasibility of the theory.

关 键 词：逆变器 死区补偿 窄脉冲 矢量控制 

分 类 号：TM464[电气工程—电器]