开关电感Quasi-Z源逆变器SVPWM策略研究  

Study of Switched inductor Quasi-Z source Inverter Based on SVPWM

作　　者：吴晓迪[1] 高金峰[1] 陶瑞[1] 刘青[1] 张锐[1] 

机构地区：[1]郑州大学电气工程学院,河南郑州450001

出　　处：《电气传动》2013年第12期28-32,共5页Electric Drive

基　　金：郑州大学研究生科学研究基金资助项目(11L00604)

摘　　要：开关电感Quasi-Z源逆变器具有无源器件个数少,电感、二极管电流低等特点。将SVPWM调制策略应用于开关电感Quasi-Z源逆变器,实现电源的逆变。在对调制过程分析的基础上,通过调整同一桥臂的开关管开通、关断时刻,实现直通的插入,分别采用4次、6次和8次直通插入方式,对开关电感Quasi-Z源逆变器进行控制。通过分析可得,在低频情况下,直通次数越多,电感电流脉动越小,电气应力比较低;而在高频情况下,直通次数的多少将不会引起效果的明显差异。Switched-inductor Quasi-Z-Source inverter has characteristics of smaller number of passive device and lower current stress on inductors and diodes.The SVPWM modulation strategy to Switched-inductor Quasi-Z-source inverter for realizing power source inversion was applied.On the basis of the modulation process analysis,using four,six and eight shoot-through zero states inversion respectively whose shoot-through zero states was inserted by changing turning on or off time of the same bridge switches to control Switched-inductor Quasi-Z-source inverter.From analysis we can see that in the low frequency,the more shoot-through zero states has,the smaller inductor current ripple and low electrical stress; while in the high frequency,the number of shoot-through zero states will not cause the significant difference of effect.

关 键 词：逆变器 开关电感Quasi-Z源逆变器 空间矢量脉宽调制 

分 类 号：TM464[电气工程—电器]