三电平电压型逆变器空间矢量调制算法的研究  

Research on space vector modulation algorithm for three-level PWM voltage source inverter

作　　者：吴学智[1] 刘亚东[1] 黄立培[1] 

机构地区：[1]清华大学电机工程与应用电子技术系,北京100084

出　　处：《电工电能新技术》2002年第4期16-19,F004,共5页Advanced Technology of Electrical Engineering and Energy

摘　　要：本文提出一种三电平逆变电路空间矢量调制的算法。在每个控制周期中加入固定作用时间的输出矢量 111,避免了在参考矢量切换扇区时可能出现的矢量突变问题。由于输出矢量的选择和作用时间的计算都是在静止的α β坐标系下完成 ,这种算法避免了常规空间矢量调试算法中复杂的三角函数的运算 ,只需要简单的算术运算即可实现空间矢量的调制。此外 ,还提出一种简单易行的中点电位控制方法实现了中点电位稳定。仿真和实验结果证明了所提出算法的有效性。In this paper,a novel algorithm of space vector modulation(SVM)for the three\|level inverter is proposed.The proposed algorithm avoids the abrupt change of output vector during the process of desired vector changing from one region to another.For the selection and switching\|time computationof the output vectors are under the stationary α β coordinate,the algorithm is easily achieved with the simple arithmetical operation and avoids the operation of the trigonometrical function.On the other hand,a convenient method is proposed to achieve the neutral point potential stability.Finally,the simulative and experimental results confirmed the validity of the proposed algorithm.

关 键 词：三电平电压型逆变器 空间矢量调制算法 中点电位控制 仿真 

分 类 号：TM464[电气工程—电器]