单相桥式SPWM电压型逆变器死区效应研究  

Effect of Dead-time on Single-phase Bridge SPWM Voltage Inverter

作　　者：梅建伟[1] 姜木霖[1] 刘杰[1] 

机构地区：[1]湖北汽车工业学院电气与信息工程学院,湖北十堰442002

出　　处：《湖北汽车工业学院学报》2012年第2期38-41,共4页Journal of Hubei University Of Automotive Technology

基　　金：湖北省自然科学基金项目资助(2009CDB343)

摘　　要：分析了电压型SPWM逆变器的工作原理,详细讨论了死区时间对电压型逆变器输出电压的影响,特别是在载波频率很高的情况下,死区使得输出基波电压下降,输出电压低次谐波含量增加,相位发生变化,通过Matlab建立桥式逆变器的模型,对结论进行了验证。The working principle of the voltage SPWM inverter was analyzed. The effect of the dead-time on the output voltage of the voltage SPWM inverter was discussed, particularly, the dead-time makes the output fundamental voltage drop, low harmonic content of output voltage increase and the phase change under the condition of high carrier frequency. The bridge inverter model was estab- lished by Matlab and the conclusion was verified.

关 键 词：SPWM 逆变器 死区 调制度 

分 类 号：TM464.31[电气工程—电器]