STATIC CONVERTER Russian patent published in 2013 - IPC H02M9/00 

FIELD: electricity.

SUBSTANCE: device comprises input terminals for connection to an AC source, being the main source of power supply, and terminals for connection to a DC source, a positive and a negative one, being the reserve one, and also contactors, phase throttles, a rectifier, a filtering capacitor, an inverter, a shaper of load supply voltage, at the same time the proposed static converter being a source of supply with double energy conversion, provides for, if necessary, to change from a network mode to an autonomous mode without interruption of its function due to the following circuit of connection: plus and minus terminals, which serve for connection from outside of the DC source, are connected via a contactor to the rectifier operating in the regular mode from the AC grid, and made in accordance with the bridge circuit on the basis of transistor choppers providing for control of the voltage value.

EFFECT: improved reliability of an uninterrupted power supply source, arranged in the form of a static AC converter, supplied from the main AC grid and a reserve AC grid.

4 cl, 3 dwg