多电平技术在直接转矩控制系统中的应用  

Application of Multilevel Technique in Direct Torque Control System

作　　者：秦虹[1] 

机构地区：[1]浙江工业职业技术学院,312000

出　　处：《电机技术》2012年第1期18-22,共5页Electrical Machinery Technology

摘　　要：多电平逆变器在直接转矩控制系统中,对减小转矩脉动有积极作用,但中点电位的稳定与否,对系统运行的可靠性带来很大影响。文章提出一种电压矢量的合成方法,既能实现直接转矩控制,同时控制中点电压稳定,对分析结论进行了程序仿真和实际装置试验,结果都证明该方法的有效性。Multilevel inverter had positive effect to reduce the torque ripple in the direct torque control system. However, whether the midpoint potential was stable or not influenced the reliable operation of the system. A synthetic method to form the voltage vectors, which was able to both realize the direct torque control and maintain the stability of the midpoint voltage, was presented. The analysis result was verified by the simulation procedure and practical testing and came the conclusion that this method was very effec- tive.

关 键 词：三电平逆变器直接转矩控制转矩脉动 

分 类 号：TM302[电气工程—电机]