FIELD: power supply systems. SUBSTANCE: adjustable device designed for stepless control of reactive power consumed by user from 0.4-kV mains without current (voltage) distortions needs two single-phase batteries, symmetrically shares battery currents among phases, requires minimal quantity of switching devices and thyristor switches, and eliminates switching surges. Battery power capacity is controlled without distortion of its phase current curves at rather smooth regulation of its power. EFFECT: enhanced reliability of power control. 2 cl, 1 dwg
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