METHOD AND DEVICE FOR CONTROLLING THYRISTORS OF REVERSE TRANSFORMER FOR POWERING EXCITATION WINDING OF CONSTANT CURRENT GENERATOR (VARIANTS) Russian patent published in 2007 - IPC H02P9/34 H02K23/02 H02M7/155 

FIELD: transformation equipment engineering, possible use in systems for impulse-phase control of reverse thyristor transformer with phase regulation from magnetic amplifier which serves for powering excitation winding of constant current generator.

SUBSTANCE: in method and device for controlling thyristors of reverse transformer for powering constant current generator excitation winding, during regulation of thyristors of reverse transformer locking of non-working group of thyristors is performed at voltage of generator which equals boundary value of continuous current of transformer, and simultaneously a limit is imposed onto maximal regulation angle for thyristors of working group, which is independent from resulting magnetic amplifier control signal. To reduce generator voltage, the working group of thyristors is transferred to inverter mode with given maximal adjustment angle, and on reduction of generator voltage to aforementioned value the prohibition on operation of groups and limitation of maximal regulation angle are lifted, and by shifting of magnetic amplifiers such a starting angle of regulation is set for each thyristor group, that current in generator excitation winding is close to zero. Control windings of magnetic amplifiers of thyristor groups of reverse transformer are coupled oppositely, to one pair of windings, setting voltage is fed, to other pair - generator anchor check connection voltage is fed.

EFFECT: regulation of thyristors of reverse transformer without compensating currents in the whole range of regulation with suppression of remainder voltage of generator.

3 cl, 2 dwg