FIELD: electric engineering.
SUBSTANCE: low cost device (1) is proposed to affect electric energy transmission to multi-phase a.c. lines (2) with phase modules (5a, 5b, 5c), containing, accordingly, a.c. contact output (6a, 6b, 6c) to connect to one phase of the a.c. line (2) and two terminals (7p, 7n). Besides, there is a phase module side (8ap, 8bp, 8cp, 8an, 8bn, 8cn) between each connecting terminal (7p, 7n) and each contact a.c. terminal (6a, 6b, 6c). The side is comprised of a sequentially connected sub modules (9), which accordingly include a power semi-conductor-based circuit and an energy storage system (15), connected in parallel to power semi-conductor-based circuit. Besides, the connecting terminals (7p, 7n) are interconnected, and power semi-conductor-based circuit includes interruptible power semi-conductors (13), which are coupled with each other based on half-bridge circuit.
EFFECT: reduced cost of item.
7 cl, 3 dwg
