FIELD: transformation equipment, possible use for systems for impulse-phase control of thyristor transformer with phase adjustment by magnetic amplifier, possible use in conjunction with other phase-shifting devices.
SUBSTANCE: invention allows phase adjustment of control impulses for thyristors, coupled in counter-phase manner, by one-phased magnetic amplifier with self-saturation with necessary spectrum limitations of adjustment angle range independently on value of resulting magnetic amplifier control signal in two-channel and single-channel control circuits, also allows synchronization of operation of impulse generator with magnetic amplifier, independently on power voltage value and circuit of connection of working windings of the amplifier. In accordance to the invention, during control of thyristors with phase adjustment by magnetic amplifier and generation of output impulse of thyristor control by means of relaxation impulse generator on one-transition transistor with RC-circuit by discharging charged capacitor of RC-circuit onto primary windings of impulse transformer, circuits of working winding of magnetic amplifier and relaxation generator are powered by rectified trapezoid shape voltage supply, synchronized with voltage of powering network, in accordance to the invention, on appearance of powering voltage impulse the capacitor of RC-circuit is charged up to value of activation of one-transition transistor with time constant corresponding to maximal control angle and set by resistor of RC-circuit, and on appearance of control impulse from output of magnetic amplifier the capacitor is charged up to transition activation voltage through another resistor with time constant corresponding to minimal adjustment angle.
EFFECT: ensured serviceability of control system with phase adjustment by magnetic amplifier at any value of resulting control signal; expanded arsenal of technical means.
4 cl, 5 dwg
