In the process of manufacturing and use of DC high-voltage power supply,the internal devices of the power supply are often damaged by the abrupt output caused by the discharge ignition,and then the frequent maintenance and replacement are caused.In order to solve this problem,a discharge ignition protection circuit for DC high-voltage power supply is designed in this paper,the circuit detects the discharge ignition fault in the power supply circuit through the mutual inductance principle,and generates the ignition signal through the protection circuit.The thyristor is turned on and the relay works.The subtraction circuit is used to realize the mutation suppression of the high-voltage power supply output,so that the high-voltage power supply output is maintained at the safe voltage value.The suppression duration can be adjusted by the relay,and the voltage can be automatically restored to the initial set value after the time is over.The experimental results show that the discharge ignition detection device is sensitive,and the circuit meets the self-recovery requirements while realizing the discharge ignition protection function.The circuit structure is reasonable,sensitive and reliable,which provides an effective guarantee for the safe operation of the power supply circuit system.
DC high-voltage power supplydischarge ignitionself-recoveryrelay
万方数据
维普
