滤波装置中晶闸管移相触发电路的设计

摘要

针对滤波补偿装置中要求电容器投切速度快，无冲击电流、电压的问题，设计了一种基于晶闸管移相触发的电路。该电路实现了快速无冲击投切，设计简单，能很好地解决过零触发电路经常遇到的过零检测混乱而导致的误触发，以及触发需等待电容器放电，有一定延迟的问题。通过现场实验测试分析说明，此移相触发电路的良好实用性。%For the problems in filter compensation device of capacitor switching speed, no impact current and overvoltage, the paper designs a circuit based on thyristor phasing trigger. The circuit have achieved fast switched and simply designed. It can solve chaos trigger,when the zero trigger circuit often encounter errors due to the zero crossing detection,and those delays when trigger the capacitor discharge .Through the field experiment test and analysis, illustrates that good practicability of phase shift trigger circuit.