Static converter with thyristor inverter feeding transformer - has thyristors triggered via control circuit coupled to voltage to frequency converter at rectifier output

摘要

The static converter consists of a thyristor inverter whose transformers secondary is coupled to a rectifier. The inverter consists of a thyristor bridge with the transformers primary winding connected in series between two of the thyristors. The bridges first diagonal contains two series capacitors and its second diagonal contains the d. c source connected at one end to the primarys centre tapping and to the junction between the two capacitors. The thyristors are triggered via a control circuit coupled to a voltage/frequency converter at the rectifiers output. The advantage lies in preventing short circuits and overloads on the secondary side affecting the inverter. The inverter is also stabilised against secondary-side load fluctuations.