采用SVM控制的四桥臂三相逆变器  

SVM Controlled Three-phase Inverter with Four Bridge Legs

作　　者：杨宏[1] 阮新波[1] 严仰光[1] 

机构地区：[1]南京航空航天大学

出　　处：《电气传动》2003年第2期32-34,共3页Electric Drive

摘　　要：文章介绍了四桥臂三相逆变器的结构 ,其三相负载可以是平衡的或不平衡的、线性的或非线性的。由于第 4桥臂的加入 ,空间矢量调制控制变得非常复杂 ,而且不能处理未知负载。分析了三相逆变器的中点电压这个关键量 ,提出了 1种新的 SV M控制方案 ,该方案易于实现并能带未知负载。仿真结果证实了该方案的可行性。The structure of three phase inverter with four bridge legs is introduced,its load can be an arbitrary load:unbalanced or balanced load, linear or nonlinear load. With the additional neutral leg,the old space vector modulation (SVM) control is very complex and can not deal with unknown load. The analysis is performed with respect to neutral voltage under both three bridge and four bridge condition, a new kind of SVM control strategy is presented, which is easy to realize and can work under unknown load condition. The results of simulation confirm its validity.

关 键 词：四桥臂三相逆变器 SVM控制 空间矢量调制 PWM控制 

分 类 号：TM464[电气工程—电器]