FREQUENCY CONVERTER Russian patent published in 1997 - IPC

FIELD: electrical engineering. SUBSTANCE: frequency converter has three phases rectifier made by thyristor 1-3 using, one phase bridge-type thyristor 4-7 made inverter which cathode part is connected to anode part of three phases rectifier. Anode part of inverter is connected to first output of filter 8 smoothing choke coil. Inverter outputs are connected to primary winding of transformer 9 and they are shunted by varistor 10, transformer secondary winding terminals are connected to output terminals of frequency converter. Diode 12 anode is connected to anode part of rectifier and it cathode is connected to second terminal of smoothing choke coil of filter 8 which condensers 13-15 are connected by star joint to output terminals of frequency converter. Condensers common joint is connected to common joint of diode 12 and filter 8 choke. Diode 12 is shunted by varistor 16, frequency converter output terminals are shunted by condenser 17. Output terminals of control block 18 are connected to rectifier thyristors 1-3 and inverter one 4-7 terminals. EFFECT: more convenient use for ozone electrical synthesis device. 1 dwg