Research on a New Type of Spike Surge Protection Circuit
Aimed at overvoltage surge and undervoltage surge of an aviation product DC power supply system,a new surge protection circuit was designed,the circuit required that the electrical load could withstand 80 V/50 ms overvoltage surge,8 V/50 ms undervoltage surge and 600 V/μs peak voltage.The traditional aviation DC anti-surge circuit had the com-plex structure,low efficiency,and the efficiency of the rated input was also greater,so we designed the power control out-put,the power tube was SM1U21PST,its withstand voltage value was 120 V,the maximum current was 10 A,and the output voltage could be continuously stabilized at 36 V under the condition that the surge voltage was 80 V and the working current of the subsequent circuit was greater than 10 A,which ensured that the subsequent circuit could work normally,the experiments showed that the circuit and the designed control method could effectively resist the surge in the aviation DC power supply,and made the circuit achieve high efficiency.
DC power supplyconvertersovervoltage surgessurge-resistant
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