摘要
介绍了三相正弦脉宽调制(SPWM)波的一种独特的形成方法.主要依靠硬件,利用三角波与正弦波的全数字化比较的方式来实现.这种方法运行速度快,可靠性高.通过有关参数的适当配合,使数据存贮量大大减小,且毋需在线运算.用微机查表方式调整SPWM波的基波频率和幅度,操作简单省时.本方案适合于交流调速系统中的微机实时控制.
This paper introduces a distinctive method for generating three-phase sine pulse width modulation (SPWM) waves. The generator mainly relies on full digital hardwares for modulating the pulse width. It has the advantages of fast responsiveness and high reliability. By means of appropriate coordination of some parameters, the data memory capacity is obviously reduced, and on-line calculation is hardly needed. The adjustment of frequency and amplitude of the SPWM waves is accomplished on microcomputer. The operation is simplified and needs less time. The scheme is suitable for microcomputer real time control of adjustable speed system.
出处
《石油大学学报（自然科学版）》
CSCD
1992年第4期104-107,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
调制
数字化
计算机控制
调速
Pulse width modulation: Digital: Microcomputer control
Variable frequency adjustable speed
