PMSM DTC系统的三相四开关容错运行  

Fault Tolerant Four-switch Three-phase Inverter based PMSM DTC Drive System

作　　者：何宗元[1] 孙丹[1] 贺益康[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《电力电子技术》2007年第2期4-6,9,共4页Power Electronics

基　　金：国家自然科学基金资助项目(50507017);教育部留学归国人员科研启动基金资助项目(J20060122)~~

摘　　要：三相四开关作为传统三相六开关逆变器交流传动系统实现容错运行后的拓扑结构正倍受关注。现以三相四开关永磁同步电机(Permanent Magnet Synchronous Motor,简称PMSM)直接转矩控制(Direct Torque Control,简称DTC)系统为研究对象,通过重新定义三相四开关状态下的电压矢量,确立了开关表,并以此为基础建立了相应的系统控制模型。仿真和实验结果证明,所提出的容错运行策略可使三相四开关PMSM DTC系统稳定运行并有较好的转矩动态性能。The Four-switch Three-phase Inverter（FSTPI） based AC drive system has attracted much attention nowadays because it is a fault tolerant topology identical to a post-fault reconfiguration for the standard Six-switch Three-phase Inverter（SSTPI）.In this paper,a voltage switching table for the Direct Torque Control（DTC） of the Permanent Magnet Synchronous Motor（PMSM） fed by the FSTPI is established based on the detailed analysis of voltage vectors,and the control principle of the PMSM DTC system fed by FSTPI are discussed as well.Preliminary experimental results verify that the proposed FSTPI-fed PMSM DTC drive system is capable of operating steadily with good dynamic torque performance.

关 键 词：永磁同步电机 转矩控制 逆变器 

分 类 号：TM464[电气工程—电器] TM921.5