CONTROLLABLE RECTIFIER WITH POWER FACTOR CORRECTION AND DIFFERENTIAL OUTPUT Russian patent published in 2017 - IPC H02M7/797 

FIELD: electricity.

SUBSTANCE: controlled rectifier with power factor correction and differential output contains "m" input terminals (1) for connecting the n-phase ac power supply source, different-polarity output terminals (2, 3) for connecting the dc load, ground terminal (4), two-capacitor output filter column (5-6) with grounded middle terminal; rectifier units (7) each consisting of one-way electronic two-key pole (8-9) with grounded middle terminal, four diodes (10, 11, 12, 13) and two reactor windings (14, 15), as well as a control unit (16) with circuits (17, 18) of reverse links provided with sensors 19, 20, 21, 22 input and output currents and voltages, and with "m" groups (23, 24, 25) of main pulse-modulation output terminals, each connected to control terminals of two-key pole of corresponding rectifier unit, in which two diode-key stands are introduced (26-27) and (28-29), two supply capacitors (30, 31), two-valve stand (32-33) and two recuperative electronic switches (34, 35), and the control unit is provided with n-groups (36, 37, 38) of additional pulse-modulator output terminals, and due to the fact that the reactor windings of each rectifier unit are made with common magnetic circuit, inductive-capacitance filter (39) connected to each rectifier unit, as well as fifth and sixth diodes (40 and 41).

EFFECT: expansion of device functionality by means of two-way energy conversion, expanded range of controlling and self-levelling of output voltages with elimination of their lower limits without reduction of power factor.

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