基于SVPWM的交流电机变频调速系统的研究

Research Variable Frequency Adjustable Speed System of AC Motor Based on SVPWM

文章在分析电压空间矢量调制原理的基础上,给出了一种基于TMS320F240的数字化实现算法,并设计了以TMS320F240为控制核心的变频调速系统的硬件和软件。试验结果表明本系统与SPWM三相逆变器相比具有更高的控制精度和更好的谐波抑制能力,能很好地降低逆变器的电流谐波成分和转矩脉动。

By analyzing the basic principle of voltage space vector pulse width modulation, a sort of digital arithmetic is expatiated and the hardware and software of frequency regulating speed system for SVPWM are designed with TMS320F240 as its core in this paper. The results of experiment indicate that the system has a higher control precision and better dynamic capability compared with three phases inverter based on SPWM , and the system can decrease obviously current harmonic component of inverter and harmonic wear of motor, and debase torque bouncing.