AC/DC CONVERTER Russian patent published in 2009 - IPC H02M7/08 

FIELD: electrical engineering.

SUBSTANCE: ac/dc converter can be used dc power supply circuits, primarily, with LV supply. Proposed converter comprises three-phase transformer (1) with two groups of secondaries, each comprising star-connected winding and reversed-star-connected winding. Secondaries of every group are connected by their zero leadouts that make the device output leads and twelve gates (2…14). The number of winding turns making aforesaid stars and that making reversed stars are related as . Six gates (3, 5, 7, 9, 11, 13) are connected into six-gate ring to have gate similar electrodes connected in pairs, that is, anodes of the pairs of gates (3, 13; 5, 7; 9, 11) and cathodes of the pairs of gates (3, 5; 7, 9; 11. 13). Phase leadouts a, b, c of winding of the star of one group of secondaries are connected, via gates (13, 5, 9), with phase leadouts b', c', a', while by gates (3, 7, 11) they are connected with phase leadouts c', a', b' of windings of the star of the other group of secondaries. To the points of connection of anodes of the pairs of gates (5, 7; 9, 11; 3, 13) connected are phase leadouts b, c, a of star windings of one group of secondaries and anodes of gates (6,10, 2), the cathodes of which are connected to phase leadouts y', z', x' of windings of reversed start of the other group of secondaries. To the point of connection of cathodes of the pairs of gates (3, 5; 7, 9; 11, 13) connected are phase leadouts c', a', b' of the star windings of the other group of secondaries and cathodes of gates (4, 8, 12), cathodes of which are connected to phase leadouts z, x, y of reversed star windings of the first group of secondaries. Load 14 is connected to zero pints.

EFFECT: reduced weight and sizes.

3 dwg