感应电机空间矢量直接转矩控制的数字实现

摘要

给出一种感应电机空间矢量直接转矩控制(DTC)的数字实现方法,详细阐述了以TMS320F2812作为控制器核心的直接转矩变频调速系统的软、硬件设计方案.采用空间矢量脉宽调制( SVPWM)方式生成逆变器开关控制信号,有效减小了转矩和磁链的脉动,实现了感应电机的高性能控制.实验结果表明,该系统起动迅速,运行平稳,动、静态性能优良.%A digital implementation method of space vector pulse width modulation direct torque control(DTC) system of induction motors is presented.The software and hardware design scheme of DTC driving system using the TMS320F2812 as the main controller is investigated.By using space vector modulation method to produce inverter switch control signal,the flux and the torque ripple are reduced significantly.Consequently,the high performance control of induction motor driving system is realized.The experimental results show that the driving system starts quickly and operates smoothly .The system has excellent dynamic and steady-state performance.