基于DSP实现对称SVPWM矢量控制的变频调速系统

介绍了DSPTMS32 0LF2 4 0 7的性能特点及其在变频调速系统中的特殊应用。讨论了对称SVPWM的基本原理以及基于LF2 4 0 7的矢量控制变频调速系统。用这种方法能减少逆变器输出电压的谐波成分和功率器件的开关损耗,可以更有效地利用电源电压。并给出了变频调速控制系统原理图、程序软件设计的SVPWM中断服务子程序流程图以及实验结果。

Frequency-variable Speed-governing System of Symmetrical Voltage-space-vector Control Realization Based on DSP

The performance and peculiarity of a series of D SP-TMS320LF2407 and the peculiar application of DSP on frequency-variable spe ed governing system are introduced, the principle of symmetrical voltage space vector pulse wide modulation and a kind of variable speed system of vector contr ol based on LF2407 are discussed. It is concluded that using voltage space ve ctor will reduce output voltage harmonics in converter and losses of IGBT,effec tively utilize power voltage. This article presents the system princple drawing ,block diagram of PWM program software design, and experimental results.