ALTERNATING CURRENT/DIRECT VOLTAGE CONVERTER WITH SIXTEEN-FOLD PULSE FREQUENCY Russian patent published in 2010 - IPC H02M7/10 

FIELD: electricity.

SUBSTANCE: converter of AC into DC with 16-fold frequency of pulsation may find application for supply to DC loads, preferably with low voltage supply. Proposed converter comprises three-phase transformer with valve winding, consisting of nine phased windings, arranged as three on each of rods, besides one of phased windings on each rod has two intermediate taps. Tap located closer to the beginning of winding (relative number of turns in which is accepted as 1.0) placed onto one (first) of rods is connected to beginning of two taps (relative number of turns in which are accepted as tg30°) eith taps arranged on two other rods. Tap arranged closer to the end of winding on the first rod is connected to ends of two windings (having relative numbers of turns tg30°·tg22,5°) without taps arranged on two other above-specified rods. Ends of two inactive windings (having relative numbers of turns tg30°·(2sin52,5°-1)) on two other rods are connected to the first taps of windings from the beginnings to taps arranged on similar other rods as mutually crosswise, and the second taps of these windings separated from the first taps by number of turns in relative units equal to 2tg30°·(sin22.5°-sin7.5°), are connected to ends of two windings (relative numbers of turns in which are accepted as tg30°·(1-2sin22.5°)·k, where k=sin63.75°/sin56.25°) without taps arranged on the first of specified rods. Relative number of turns in part of winding arranged on the first rod, from its end to the second tap is equal to tg30°·tg22,5°·k, and part arranged between taps - 2tg30°·tg15°. Converter also comprises ten-phase valve bridge, opposite poles of which create output terminals of device, to which load is connected. Ten free phase terminals of valve winding are connected to AC inputs of ten-phase valve bridge.

EFFECT: converter has higher efficiency factor and is less complex in manufacturing.

7 dwg