What are Thyristor Convertors?

The convertors in dc drive systems are designed to control and supply separately-excited dc machines in applications that demand rapid response, high accuracy and great reliability.

The convertors are available with single-convertor arrangement and in double-convertor arrangement.

Operation. The armature supply unit has a closed-loop current control system which ensures that the armature current follows the set current, reference. The system is based on a current controller, the output signal of which can influence the armature current via the control pulse circuits and the thyristor unit.