多电平技术在直接转矩控制系统中的应用研究  

Study on the 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,浙江绍兴312000

出　　处：《电力电子技术》2012年第4期72-74,共3页Power Electronics

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,但中点电位稳定与否,对系统运行的可靠性带来很大影响。这里提出一种电压矢量的合成方法,既能实现直接转矩控制,又能控制中点电压稳定,对分析结论进行了程序仿真和实际装置实验,结果都证明该方法有效。Multilevel inverters have positive effect on reducing the torque ripple in the direct torque control system. However, the stability of the mid-point potentials brings very big impact on the reliability of the system.This paper puts forward a kind of voltage vector synthesis method, which can realize the control of direct torque and control the stability of mid-point voltage at the same time.The author experiments the conclusion by the simulation procedure with practical test and this new method turns out to be useful.

关 键 词：逆变器 三电平 直接转矩控制 转矩脉动 

分 类 号：TM464[电气工程—电器]