Modelling and Simulation of 6 Pulse GTO Thyristor Converter

Using PSPICE simulator we create GTO thyristor model with its gate circuit and obtained the switching characteristics. We know that GTO thyristor can be turned on and turned off in the range current of 5A ~ 20A with a small turn-off time. This GTO thyristor model is being implemented in the 6 pulse converter circuit with controlled gate circuits. The characteristics curves of firing angle vs. dc output voltage show almost the similar characteristics except in the range of firing angle 00 ~ 750, where the simulation results are little bit smaller compared to the mathematical calculation results. We also know that power transfer can be controlled either as a rectifier or an inverter.