THYRISTOR DRIVER FOR HIGH-VOLTAGE CONVERTERS Russian patent published in 2018 - IPC H02M1/92 

FIELD: electricity.

SUBSTANCE: driver comprises: a power source (1); a power control unit (2); an optical radiator (3); a logic unit (4); a thermal protection unit (5); a thyristor voltage control unit (6); a thyristor control signal control unit (7); an optical receiver (8); a delay unit (9); an amplifier (10). The driver is powered by a current transforme, made on a ferrite ring with a secondary winding wound on it. The ferrite ring is put on the insulating tube and filled with a compound. The primary winding of the current transformer is the wire of a high-frequency (50-kilohertz) current loop, passing successively through the current transformers of the other converter drivers. The secondary winding of the current transformer T is connected to the power source (1). The power source (1) is based on a diode bridge rectifier and a parallel voltage regulator. Capacitors are provided at the output of the power source to filter the stabilized voltage. The driver's operation consists in generating a thyristor control current pulse by the input optical signal, controlling thyristor voltage, and protecting the thyristor from overheating.

EFFECT: power source supplies the amplifier and the rest elements of the driver with stabilized voltages.

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