永磁同步电动机一种新型直接转矩控制技术  

A Novel Direct Torque Control Strategy For Permanent Magnet Synchronous Motor

作　　者：袁登科[1] 张逸成[1] 姚勇涛[1] 

机构地区：[1]同济大学电气工程系,上海200092

出　　处：《电气自动化》2009年第6期1-4,共4页Electrical Automation

基　　金：同济大学优秀青年人才培养计划项目(0800219082)

摘　　要：针对永磁同步电动机传动系统的直接转矩控制技术进行研究,提出一种新型控制方案。该控制方案采用砰砰滞环调节器与电压矢量查询表的方式直接对永磁同步电动机定子电流的激磁电流分量和转矩电流分量进行闭环控制,电流控制更为直接,并且可以容易实现永磁同步电动机的最大转矩电流比控制。文章采用MATLAB仿真软件对该控制技术进行仿真,仿真结果表明了该控制方法对定子电流控制的有效性,也表明系统具有良好的动态性能。最后构建了以数字信号处理器TMS320LF2407为核心的永磁同步电机调速试验系统,验证了该方法的有效性。A new seheme of direct torque control applied for permanent magnet synchronous motor （PMSM） drive system is analyzed. The hysteresis controller and lookup table for stator voltage space vector is adopted to control the magnetizing current and torque current of the stator current. In the new scheme stator current is controlled more directly and the maximum torque per ampere （MTPA） strategy is easily accomplished. MATLAB platform is used to simulate the new control scheme. Simulation results show the validity of the new scheme to control the stator current and high performance in the dynamic process. Finally the variable speed PMSM drive testing system is constructed that is based on the digital signal processor TMS320LF2407 as the core. Experimental results testify validity of the new scheme.

关 键 词：永磁同步电动机 直接转矩控制 激磁电流 转矩电流 

分 类 号：TP921.5[自动化与计算机技术]