POWER CONVERTER FOR THREE- AND SINGLE-PHASE CURRENTS AND VOLTAGES Russian patent published in 2007 - IPC H02M5/14 H01F30/14 

FIELD: electrical engineering.

SUBSTANCE: proposed converter is designed to supply with power single-phase consumers from three-phase primary supply mains handling balanced load. Conversion process involves two steps: first step includes conversion of three-phase currents and voltages into two-phase modulo equal and quarter-cycle phase-shifted ones; second step includes conversion of two-phase currents and voltages into single-phase receiver ones by means of ballast reactance components inserted in two-phase winding circuit of converter transformer. Winding parameters of converter transformer desired to meet balance conditions as well as correlations between parameters of reactance components are specified. Balanced mode of converter operation is monitored and ballast reactance components are controlled by measuring two-phase currents and phase-shift angle between them as function of magnitude and polarity of ballast-component reactances.

EFFECT: enhanced power capacity of single-phase loads being handled.

1 cl, 2 dwg