一种电压暂变发生器研究

为了补偿电网电压的暂降,需要一种电压暂降发生器来模拟电网产生电压暂降.在现有的各类暂降发生器中,以基于电子开关型电压暂降发生器最易使用.文章介绍一种由新型交流开关和自耦变压器构成的电压暂变发生器.给出了该全控型交流开关的电路拓扑,分析了交流开关的工作原理.该发生器可以模拟多种电能质量的干扰,并可用于大功率场合.最后,搭建了实验电路,给出了实验波形.实验结果验证了这种电压暂变发生器的有效性.

Research on a Kind of Voltage Transients Generator

In order to compensate voltage sags,it is necessary to make a kind of voltage sags generator which can simulate voltage bus fault.At present,the sags generators base on AC switch are most easy to manipulated for all kinds of ones.This paper introduces a novel voltage fault generator which is composed of full control AC switchs and autotransformer.The circuit topology of the AC switch is given and its principle is analyzed too.The generator can simulate many kinds of power quality problem and can also be used in high-power condition.At last,a experimental system circuit is built and experimental waves are given.The results confirmed the validity of this voltage transients generator.