ADJUSTABLE BOOSTING VOLTAGE RECTIFIER Russian patent published in 2020 - IPC H02M7/217 

FIELD: electrical engineering.

SUBSTANCE: present invention relates to electrical engineering and power electronics, in particular to static step-up electric converters of AC voltage to DC voltage, and can also be used in a two-link frequency converter with an intermediate DC link. Technical results are achieved by the fact that the circuit of the adjustable voltage boosting rectifier includes an additional two-wave voltage rectifier and a transistor, which organize the energy accumulation process in throttles with subsequent output of this energy to the output of the adjustable step-up DC converter and to charge capacitance of capacitor installed at the output of regulated boost converter. If it is necessary to obtain three voltage levels at the output of the voltage rectifier, the latter may be equipped with an additional capacitor with the possibility of supplying the circuit from the supply mains made with a blind-earthed neutral.

EFFECT: technical results of the proposed invention are reduced number of semiconductor elements of the power circuit, high efficiency, improved functional capabilities, simple control system, high reliability during operation, reduced weight and dimensions of the voltage rectifying unit.

2 cl, 5 dwg