METHOD OF TWO-CHANNEL DIRECT CONVERSION OF FREQUENCY Russian patent published in 2019 - IPC H02M5/16 

FIELD: electrical engineering.

SUBSTANCE: invention relates to frequency conversion engineering and can be used in an adjustable AC electric drive. Method of frequency conversion consists in that in each of two channels of multiphase AC network level of supply voltages is set equal, providing symmetrical phase shift between supply voltages and controlling duration of switching periods.

EFFECT: technical result consists in improvement of output voltage quality due to formation of its symmetry.

1 cl, 10 dwg, 2 tbl