ALTERNATING-TO-DIRECT VOLTAGE CONVERTER Russian patent published in 1994 - IPC

FIELD: conversion equipment. SUBSTANCE: alternating-to-direct voltage converter has three-phase bridge rectifier with thyristors 1-3 of cathode group and diodes 4-6 of anode group of valves, three units (by number of thyristors) for control 11-13, output voltage control unit 14, resistors 15-17. Each unit for control incorporates transistor 30 (31, 32), resistor 36 (37,38), diode 33 (34,35) and capacitor 39 (40,41). Units 11-13 for control over thyristors prevent unblanking of thyristor next in time at conductance angles of preceding thyristor equal to 60 electrical degrees or less. EFFECT: simplified design, provision for control over output voltage range close to maximum. 3 cl, 3 dwg