DEVICE AND METHOD TO SUPPLY ENERGY TO CRITICAL LOAD Russian patent published in 2011 - IPC H02J9/08 H02J3/18 

FIELD: electricity.

SUBSTANCE: device of high-voltage energy supply comprises the first and the second converters (20, 30) of voltage, connected in series, besides, a power accumulator (10) is connected to the DC side of the first voltage converter, the load is connected to the AC side of the second voltage converter, and a power generator (40) is connected to the AC side of the second voltage converter (30), the high-voltage power supply device is made as capable of connecting the load to the AC side of the first voltage converter, besides, the high-voltage power supply device comprises a bypass line (42) for the generator (40), with the help of which the generator may be connected directly to the grid (60). Connection of the load to the AC side of the second voltage converter, and the generator - to the second converter, provides for instantaneous power supply during power interruptions.

EFFECT: increased efficiency of power supply to the high-voltage device by elimination of failures in the power supply device, and also the possibility to connect the generator directly to the grid in case one or both converters fail.

15 cl, 6 dwg