基于CPLD的一种新型晶闸管数字触发器

New thyristor digital trigger based on CPLD

本文介绍了一种采用复杂可编程逻辑芯片CPLD的新型全数字晶闸管触发器,该触发器具有硬件简单可靠、便于集中控制、控制精度高、输出脉冲对称度好等优点。同时,相对传统算法,该系统采用新算法,巧妙利用模可变计数器,达到计算简便、响应速度快、适应性好、抗干扰性强、占用系统资源少等目的,并给出了符合实际情况的仿真效果图,系统实现了相序自适应、缺相保护和系统参数在线调节功能。该系统在实践中收到了良好的效果。

A fuji digital thyristor trigger which uses the complex programmable logic devices （CPLD） is introduced in this paper. Its hardware is simple and can be easily centralized control, and it has high controlling precision and the output pulses have better symmetry. At the same time, this paper presents a new arithmetic with respect to the past ones and cleverly utilizes modular variable counter, which has simple calculation, rapid response time, good adaptability and high immunity and requires less resource. From the image, the system implements the functions as follows： phase self-adapting, open--phase protection and parameter-adjustment on line. The simulator results are live up to the real situation.