SINGLE-PHASE AC TO DC CONVERTER Russian patent published in 2010 - IPC H02M7/155 

FIELD: electricity.

SUBSTANCE: single-phase converter of AC into DC may find application for conversion of AC into DC and may be used in DC sources with controlled voltage. Proposed converter comprises eight valves and a single-phase transformer with primary winding and group of secondary windings that consists of two parts, every of which has tap from middle point, besides numbers of turns in both parts of group of secondary windings are equal. Six valves form two reciprocal three-valve starts, common points of valve connection in which form output leads of device. Free electrodes of valves in one star are connected to beginning, middle point and end of the first part of group of secondary windings, and free electrodes of the second star valves are connected to beginning, middle point and end of the second part of group of secondary windings. At the same time one of spare valves connects beginning (end) of the first part with end (beginning) of the second part of group of secondary windings, and the second spare valve connects end (beginning) of the first part with beginning (end) of the second part of group of secondary windings, besides both valves are connected in accord with valves of three-valve stars. All valves of device are controlled or one of them, which belongs to one of three-valve stars and is connected to middle point of corresponding part of group of secondary windings, is uncontrolled.

EFFECT: higher power coefficient.

3 dwg