摘要
本文介绍SPWM波产生的一种简单方法.在开关模式的确定及实现上有所改进,使用内存少.避免了一些不必要的中断。从而简化了计算步骤和程序的处理时间,获得了基波频率、幅值可调而谐波成份小的三相SPWM波.最后给出了硬件结构及软件流程图.实验表明,本方法有一定实用性.
A simple method for generating SPWM waveforms is introduced. The formation of switching pattern and its implementation have been improved. It makes possible simplified computing and shortened microcomputer time and the number of interruption reduced. The three-phase SPWM waveforms with constant ratio of output voltage to frequency can be obtained. AC motor operation experiment has proved the practicability of this mehtod.
出处
《石油大学学报（自然科学版）》
CSCD
1993年第3期87-91,共5页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
SPWM波
变频调速
微机
SPWM waveform: Frequency variable speed-adjustable system
Microcomputer control
