短路保护和浪涌抑制电路的结合

Combination of Short Circuit Protection and Surge Suppression Circuit

对于复杂装备系统,由于系统内用电设备较多,而这些用电设备都依赖同一条母线供电,任何一个用电设备出现故障短路时都会使供电母线短路,从而损坏其他用电设备的输入电源,导致所有用电设备均不能正常工作。各个设备正常工作时,在设备开关的过程中也会产生较大的浪涌电流,对供电母线造成冲击,从而产生危害。为了提高系统的供电可靠性,提出了一种短路保护和浪涌电流抑制结合的电路。该电路对于抑制电源加电瞬间浪涌电流、在某个支路故障引起短路时保护供电母线、保证其他支路正常工作以及提高供电的可靠性和安全性具有重要意义。

For complex equipment system,because there are many electrical equipment in the system,and these electrical equipment rely on the same bus for power supply,when any electrical equipment has a fault short circuit,the power supply bus will be short circuited,which will damage the input power of other electrical equipment,resulting in all electrical equipment can not work normally When each equipment works normally,there will be a large surge current in the process of equipment switching,which will impact the power supply bus and do harm to the power switch.In order to provide the power supply reliability of the system,this paper proposes a circuit which provides surge current suppression and short-circuit protection functions at the same time.The circuit is of great significance to suppress the surge current at the moment of power on,protect the power supply bus when a branch fault causes a short circuit,ensure the normal operation of other branches,and improve the reliability and safety of power supply.