三电平逆变器空间矢量控制算法研究  

Research of SVPWM Algorithm Based on Three-level Inverter

作　　者：赵钢[1,2] 王磊[1,2] 

机构地区：[1]天津理工大学自动化学院,天津300384 [2]天津市复杂控制理论与应用重点实验室,天津300384

出　　处：《电气传动》2012年第11期26-29,共4页Electric Drive

摘　　要：二极管钳位式三电平逆变器由于其自身的优点,使其在高压大功率场合得到广泛的应用。对三电平逆变器的工作原理进行了分析,针对该逆变器采用了空间矢量算法进行控制。该算法给出了参考矢量所在位置的判断规则、开关矢量的作用顺序;针对该主电路特有的中点不平衡问题,提出通过调节正负小矢量作用时间来维持中点平衡的方法,并通过仿真进行了验证。Three-level inverter is widely used because of its advantages in high power applications. Works of three-level inverter were analyzed ,and SVPWM algorithm was applied in three-level inverter. The algorithm gives the role of rules what position reference vector is located in and the sequence of all vector works ; the trouble of midpoint potential imbalance was existed in the main circuit, we can solve this problem though parti- cular method that regulate the time of positive and negative small vector in inverter. Test results verify the al- gorithm in Matlab.

关 键 词：三电平逆变器 空间矢量算法 中点电位平衡算法 MATLAB仿真 

分 类 号：TM464[电气工程—电器]