CONVERTER OF THREE-PHASE AC VOLTAGE INTO DC VOLTAGE (VERSIONS) Russian patent published in 2012 - IPC H02M7/12 

FIELD: electricity.

SUBSTANCE: first version of a converter comprises a zero input lead, a three-phase controlled valve bridge, two paralleling reactors and two additional valves, between a common point of free electrodes of which and a zero input lead there is a primary connection circuit, a three-phase transformer, the first winding of which is connected to phase input leads and to input leads of the specified bridge, and the second one, with the secondary connection circuit, to the input leads of an additional diode bridge with an additional group of phase windings, connected into an open delta, in the form of which a connection circuit is made, the third winding is connected as a star and is connected by phase leads to input leads of the specified diode bridge, and with the common point of identical leads, opposite ones with the common point of identical leads of the second group of phase windings, - to a free lead of the secondary connection circuit. In the second version there are two additional secondary windings of a transformer connected with main windings and 12 diodes into a circuit of a half-wave rectifier.

EFFECT: expansion of operational resources due to possibility of operation, reduced losses at valves.

4 cl, 9 dwg