基于改进滞环控制技术的四桥臂逆变器  

Four-leg inverter based on improved hysteresis control technology

作　　者：张晓勇[1] 吕冰[1] 王军[1] 张广军[1] 邓延丽[1] 

机构地区：[1]西华大学电气信息学院,四川成都610039

出　　处：《电源技术》2010年第11期1172-1175,共4页Chinese Journal of Power Sources

基　　金：四川省教育厅重点项目基金资助(07ZA108)

摘　　要：针对三相不平衡或非线性负载,提出了一种采用内环空间矢量电流调节器和外环同步坐标比例控制器相级联的三相四桥臂逆变器的控制方案,实现了对三相四桥臂逆变器的解耦控制;并在控制器中设计了不对称模块,从而改善了逆变器接平衡负载时,三态滞环比较器无法跟踪的情形。仿真结果表明该方法具有良好的控制特性。With unbalanced/nonlinear three-phase loads,a decoupled control scheme for three-phase four-leg inverter was proposed,adopting an inner current regulator based on space vectors with an outer synchronous frame PI controller,which could realize the decoupling control for three-phase four-leg inverter.Asymmetric module was used to improve the performance that three-level hysteresis comparators could not track when the inverter connected with the balance load.The simulation results verify the validity of the proposed control scheme.

关 键 词：三相四桥臂逆变器 空间矢量调制 三电平滞环比较器 

分 类 号：TM464[电气工程—电器]