ADJUSTABLE VOLTAGE RECTIFIER (OPTIONS) Russian patent published in 2021 - IPC H02M7/219 

FIELD: electrical engineering; power electronics.

SUBSTANCE: group of inventions relates to the field of electrical engineering and power electronics, in particular to static electric converters of alternating voltage to direct voltage, which can vary over a wide range, it can be used as part of a two-link frequency converter with a DC intermediate link. The circuit of adjustable voltage rectifier contains a voltage rectifier and chokes installed in series between the phase outputs of the supply network and the inputs of the voltage rectifier. The voltage rectifier, according to the first option, is made controlled on thyristors; it contains an additional multiphase two-half-period voltage rectifier assembled on diodes and a switch made on a transistor. According to the second option, the voltage rectifier is made controlled on thyristors; it contains an additional capacitor, a multiphase two-half-period voltage rectifier assembled on diodes and a switch made on a transistor, as well as the zero point of the adjustable voltage rectifier connected to the zero output of the supply network.

EFFECT: device allows regulating the rectified voltage both below and above the voltage level determined by the voltage level of the uncontrolled voltage rectifier, increasing efficiency, simplifying the power circuit of the adjustable voltage rectifier, expanding functionality, and increasing reliability.

2 cl, 7 dwg