The Design of 400V/200kA Single-phase Synthesis Test System

On the basis of the existing research results of high-voltage synthesis experiments, this paper uses Matlab/Simulink software to model and analyze the voltage source and current source circuit of the 400V/200kA low-voltage synthesis circuit. The results show that the recovery voltage value provided by the voltage source circuit has a vital impact on the equivalence of the synthesis test. On this basis, the expected transient recovery voltage value can be obtained by adjusting the charging capacitor, the discharging reactor and the frequency modulation parameters, which can provide a theoretical basis for the domestic low-voltage synthesis test while saving the experimental investment cost. At the same time, this paper uses PIC16F877a single-chip microcomputer to realize the optimized design of the overall test control system of the low-voltage synthesis loop, which can realize the automatic charging and discharging function of the capacitor, and when the capacitor is charged, the charging circuit can be disconnected by itself to reduce manual operation