SINGLE-CYCLE DC VOLTAGE CONVERTER WITH ENERGY TRANSFER IN PULSE Russian patent published in 2024 - IPC H02M3/335 

FIELD: electrical engineering.

SUBSTANCE: invention relates to single-ended DC voltage converters, and can be used in secondary power supply systems for conversion, stabilization and control of constant output voltage, galvanically separated from input constant voltage. Device comprises power transformer 2, in which the beginning of the first primary winding 1 is connected to the positive terminal of the input DC voltage source, and the end of the first primary winding 1 through control key 3 is connected to the negative output of the input constant voltage source, which forms a common bus. Capacitor 4 is connected to the common point of connection of control key 3 with the end of the first primary winding 1, the second pole of which is connected to the end of the second primary winding 5, the beginning of which is connected to the common bus. Anode of diode 6 is connected to common point of connection of capacitor 4 with end of winding 5, cathode of diode 6 is connected to positive terminal of input constant voltage source. Beginning of secondary winding 7 of transformer 2 is connected to the anode of rectifying diode 8, the cathode of which is connected to the input terminals of the L-shaped LC filter 9, to the output terminals of which load 10 is connected. A shunt diode 11 is connected to the common point of connection of rectifier 8 with the input terminal of L-shaped LC-filter 9, anode of diode 11 is connected to common point of connection of winding end 7 with load 10.

EFFECT: elimination of high-voltage surge on power control key due to presence of leakage inductance on primary winding of transformer, to which power control key is connected.

1 cl, 1 dwg