三电平逆变器空间矢量调制及中点电位平衡研究  

Research on SVPWM Method and Neutral-point Voltage Balance in Three-level Inverter

作　　者：张晔[1] 汤钰鹏[1] 王文军[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电气传动》2010年第2期33-36,共4页Electric Drive

摘　　要：多电平逆变器在中高压大功率场合得到了广泛的研究和应用。研究了二极管钳位型三电平逆变器的拓扑结构和7段式空间矢量SVPWM调制方法。给出了参考矢量所在区域的判断方法,推导工作矢量的作用时间。为解决中点电位平衡问题,提出了一种充分利用冗余电压矢量的中点控制方法。通过仿真验证了所提方法的正确性和有效性。The multilevel inverter has been studied and widely used in high power applications for medium or high voltage. The structure of the three-level NPC inverter and seven-stage SVPWM modulation was described. Introduced the judging method of which region the reference vector is located, deduced the duty time of each vector. To solve neutral-point voltage balancing problem, a control method fully utilizing redundant voltage vectors was proposed. The validity of proposed method is demonstrated by the simulation results.

关 键 词：三电平逆变器 空间矢量脉宽调制 中点电位平衡 

分 类 号：TM464[电气工程—电器]