Marine three-phase 380V input high-voltage air purification circuit structure

The utility model relates to a marine three-phase 380V input high-voltage air purification circuit structure, which comprises a three-phase single-switch PFC (power factor correction) power unit, a double-transistor forward DC-DC (direct current-direct current) power conversion unit, a high-frequency transformer and a voltage doubling rectifying power unit, and can generate 12kV direct-current high voltage capable of being set and limiting voltage and current to purify air. Meanwhile, the power factor of the three-phase input power supply can reach more than 0.95 during full-load work, and the reactive power loss and harmonic interference input at the grid side can be effectively reduced; when the high-voltage load side is short-circuited, the circuit can automatically cut off protection within microsecond-level time and automatically restart after the short-circuit fault disappears. 本实用新型涉及一种船用三相380V输入高压空气净化电路结构，包括三相单开关PFC功率单元、双管正激DC-DC功率变换单元、高频变压器、倍压整流功率单元，能够产生可整定、限电压、限电流的12kV直流高压以净化空气，同时满负荷工作时三相输入电源的功率因数可达