FIELD: multiple-pulse three-phase voltage rectification.
SUBSTANCE: proposed converter has two three-phase transformers whose primary windings are connected in star and in delta, respectively, and secondary windings, in six-phase star, each secondary lead of six-phase star of first transformer being connected to respective integrated power electrodes of two diodes of twelve-diode ring circuit; each secondary phase winding of both transformers is provided with tap that divides its turns in 1 : 1.933 ratio, two other electrodes of mentioned diodes being connected to respective taps from winding parts of second-transformer six-phase star; each tap from every winding six-phase star of first transformer is connected to respective integrated power electrodes of two diodes in second twelve-diode ring circuit whose two second electrodes are connected to respective leads of second-transformer secondary-winding six-phase star; relative phase shift of each winding being connected relative to two other one is 30 electrical degrees.
EFFECT: reduced level of ripples.
1 cl, 2 dwg
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