FIELD: electrical engineering.
SUBSTANCE: method of control for multiphase alternating-current rectifier rated value of branch voltage (u1(t),…, u6(t)) is superimposed by In-phase voltage (u"cм"(t) so that sum of two voltage values (u1(t), u2(t) or u3(t), u4(t), or u5(f), u6(t) of valve branches for each phase module (100) is equal to voltage (Ud) of intermediate circuit in this multiphase alternating-current rectifier. Thus the above semiconductor converter of alternating current has three-phase alternating-current rectifier with distributed energy storage units at the mains side and load side or at load side only and such converter can be used as a semiconductor converter of alternating current for drives started from a standstill.
EFFECT: control of multiphase rectifier during its operation at low output frequencies up to its direct current operation.
9 cl, 12 dwg
