METHOD TO CONTROL MULTI-PHASE RECTIFYING UNIT Russian patent published in 2015 - IPC H02M7/00 H02M7/12 

FIELD: electricity.

SUBSTANCE: method to control a multi-phase rectifying unit is carried out by smooth regulation of rectified voltage, which is realised by variation of output voltage of a three-phase autonomous voltage inverter with width-pulse modulation, connected by AC terminals to an inlet of a low-frequency filter (L-shaped), output terminals of which are connected to the primary winding of the three-phase matching transformer, which by secondary phase windings is connected in series with the circuit winding of the converting transformer. Smooth regulation of rectified voltage is carried out by variation of phases and amplitudes of the first harmonics of output voltage of a three-phase autonomous voltage inverter with pulse-width modulation.

EFFECT: simplified rectifying unit and its control circuits, with provision of electric energy recuperation from a DC circuit into a power supply circuit.

7 cl, 2 dwg