一种实用的双电源快速转换开关

A Practical Double Power Quick Change-over Switch

随着我国经济的快速发展,一些重要负荷和大型活动临时负荷的供电可靠性显得越来越重要.对于这类负荷,一般采用双电源供电来满足这些重要负荷不失电的要求.为满足负荷的电能质量要求,两个电源转换时,失电时间越短越好.文章详细介绍了一种转换时间小于10 ms的快速转换开关.

With the rapid development of our country’s economy,the power supply reliability of some important loads and temporary loads of large-scale activities is particularly important.For this kind of load,the scheme of double power supply is generally adopted to meet the requirement of no power loss for these important loads.In order to meet the power quality requirements of the load,the shorter the loss of power time,the better.To achieve fast power conversion,the following two conditions must be met:(1),rapid detection of the main power supply missing;(2)The standby power supply is put into operation quickly.This paper introduces a kind of fast change-over switch whose change-over time is less than 10ms in detail,and introduces the principle and realization method of power loss detection and change-over control.