FIELD: electrical and power engineering systems, plants, and pieces of equipment.
SUBSTANCE: two-phase winding of transformer converter has several series-connected groups whose number equals number of regulation stages; each group, in its turn, has six coils whose turn number is correlated by expression 
where K may vary within 
Three first and three remaining coils in each group form two half-groups that function as phase members of two-phase winding.
EFFECT: enlarged functional capabilities.
2 cl, 1 dwg
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