ALTERNATING VOLTAGE THYRISTOR CONVERTER Russian patent published in 1994 - IPC

FIELD: electrical engineering. SUBSTANCE: thyristor converter is designed for supply of single-phase load 1 with A.C. voltage. It has transformer built on three-leg core 2. Its center leg carries auxiliary winding 3. Main winding of transformer is manufactured in the form of two identical sections 4 and 5 put on extreme legs of magnetic core 2 and interconnected in series and in aiding. Extreme leads of main winding 4-5 are connected directly to leads for connection of first and second phases of supply three-phases network and common point 6 of connection of its sections 4 and 5 is coupled to lead for connection of third phase of network through pair 7 of thyristors connected in parallel opposition. Circuits of controlling electrodes of thyristors are linked to output of unit 8 of their phase-pulse control. Reversible bridge 9 inserted into converter has four break contacts. Control unit 14 realizes automated control. EFFECT: enhanced efficiency of control. 1 dwg