AC-TO-DC CONVERTER Russian patent published in 2023 - IPC H02M7/25 

FIELD: electrical engineering.

SUBSTANCE: invention relates to AC to DC voltage converters that can be used in secondary power supply systems for power factor correction, converting, regulating and stabilizing a DC output voltage. The device contains a control key (3) implemented in the form of an anti-series connection of field-effect transistors (MOSFET), the control electrodes of which are combined into a common point connected to the control circuit (10). Power transformer (2), the primary winding (1) of which is connected to an AC voltage source through a control key (3), and the secondary winding (4) through rectifier diodes (5, 8) is connected to the filter capacitors (6, 7) connected in series parallel to which the load (9) is connected. In the proposed AC-to-DC converter, the beginning of the primary winding (1) of the transformer (2) is connected to the first pole of the input AC voltage source, and the end of the primary winding (1) is connected to the second pole of the input AC voltage source through a controlled counter-serial key (3). With the beginning of the secondary winding (4) of the transformer (2), the anode of the rectifier diode (5) is connected, the cathode of which is connected to one of the terminals of the capacitor (6). The second terminal of the capacitor (6) is connected to the winding end (4). The winding end (4) is connected to one of the terminals of the capacitor (7), the second terminal of which is connected to the anode of the rectifier diode (8), the cathode of which is connected to the beginning of the winding (4). A load (9) is connected in parallel with the capacitors (6) and (7) connected in series.

EFFECT: formation of a constant output voltage from an alternating input voltage, the implementation of galvanic isolation between the input and output circuits, the combination of the control circuit of counter-serial controlled switches, the improvement of the performance of the power factor corrector, the simplification of the control circuit.

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