【摘要】 介绍了数字信号处理器TMS320LF2407的性能特点及其在变频调速系统 中的特殊应用。讨论了电压空间矢量法及产生对称PWM波形的原理和方法,用该方 法能减少逆变器输出电流的谐波成分及电动机的谐波损耗,更有效地利用电源电压,大 大扩展了电动机的调速范围。并给出了详细程序设计的控制框图、PWM初始化程序以 及实验结果。更多还原

【Abstract】 The performance and peculiarity of a series of DSP-TMS320LF2407,and the peculiar application of DSP on frequency-variable speed adjustable system were introduced, the principle and method of voltage space vector producing symmetrical PWM waveforms were discussed. It concludes that using voltage space vector will reduce output current harmonics in converter and harmonics losses of motor,effectively utilize power voltage,and consumedly enlarge speed-adjustable scope of motor. This system block diagram of part of program,PWM initialization program and experimental results were presented.更多还原