CAPACITORS TO THE THREE-PHASE NETWORK CONNECTION DEVICE Russian patent published in 2018 - IPC H02J3/18 

FIELD: electronic equipment.

SUBSTANCE: invention relates to the power electronics, in particular to the designed for the reactive power compensation in industrial power supply networks cosine capacitors three-phase banks connection devices. Capacitors connection to the three-phase network is made through the diode rectifier, made by the three-phase bridge circuit, in which DC circuit the reactor is included. For the three-phase network with zero conductor, twin reactor with two half-windings is used, which middle point is connected to the neutral wire, from the bridge circuit forming the zero diode rectifiers two circuits. Due to the device natural properties, smooth and symmetrical connection is made with increase in the capacitor charge current and voltage in all phases in accordance with the exponential law. After reaching the capacitor voltage steady-state value, their connection process is terminated them using the contactor, shunting the rectifier input terminals.

EFFECT: as more reliable for the power supply systems, the proposed technical solution can replace the known capacitors to the three-phase network connection devices.

1 cl, 5 dwg