基于TMS320F2812的SVPWM变频调速系统

SVPWM variable-frequency speed regulating system based on TMS320F2812

提出了一种以TMS320F2812为控制核心的异步电机空间矢量脉宽调制(SVPWM)变频调速系统。详细叙述了SVPWM的原理及其基于数字信号处理器(DSP)实现的两种算法,并对系统的结构和硬件进行了设计。利用SVPWM的Matlab/Simulink仿真波形验证了其结论,并对两种不同算法得到的波形进行了分析。实验结果表明,该系统实现简单,电压利用率高,实时性强,有效地提高了电机的运行性能。

A control system of induction motor based on TMS320F2812 was presented. The principle of space vector pulse width modulation （SVPWM） and two methods of its implementation based on digital signal processor （DSP） were introduced in detail, the structure and hardware of the system were designed, the results with the simulation waveforms of SVPWM based on Matlab/Simulink software were verified, and the waveforms which were from two different nlethods were analyzed. The results prove that the system has many advantages, such as simple structure, high voltage utilization ratio, real-time control function, and improves the induction motor＇s work performance effectively.