MULTILEVEL STEP-UP CONVERTER OF DC VOLTAGE TO THREE-PHASE VOLTAGE OF INDUSTRIAL FREQUENCY Russian patent published in 2015 - IPC H02M7/497 

FIELD: electricity.

SUBSTANCE: invention relates to the converters widely used, for example in solar power. Technical result is achieved due to assurance of work to three phase load and joint operation with three phase grid by means of making the multi-level step-up three-phase converter containing common DC source, for example in form of the solar panel, single-phase bridge self-contained inverter, to its output the additional three-phase converter of cell type is connected, it contains HF step-up single-phase multi-winding transformer, single-phase reversible cells connected with secondary windings of the transformer, control system, current and voltage transmitters, setup unit of output voltage with industrial frequency. The matching transformer of industrial frequency is connected. Number of levels in the output voltage sinusoid is determined by number of single-phase reversible cells in the frequency converter.

EFFECT: improvement of weight and dimension parameters and expansion of functional abilities.

2 cl, 3 dwg