摘要
探讨了SPWM式低频电源系统的构成及控制问题。从降低输出谐波含量要求出发 ,采用基于面积等效原则的脉宽调制算法和逐周过零施加控制的闭环控制方式 ,以AT89C5 1为主控部件研究构成了SPWM式低频电源系统 ,取得了良好的实验结果。
The problem of construction and control of SPWM low-frequency supply system is studied in this paper. Considering the requirement of low harmonic contents a PWM-algorithm based on area-equivalent principle is introduced, and additionally an idea of delivering control effect during passing through zero point at each cycle is suggested. In this base a SPWM low-frequency supply system using single-chip microprocessor AT89C51 as a main control component is constructed and satisfied experimental results are obtained.
出处
《电工技术杂志》
2004年第11期97-101,92,共6页
Electrotechnical Journal
