Design a gate controller module for thyristor

Abstract

The project is a software and hardware based .This project is about to design a gate controller module for Thyristors for teaching purpose and also includes the explanations of the settings of operation condition and gate circuit parameters including firing angle and time delay of turn-on and turn-off pulses. The circuit design to find the waveform the controlled half-wave rectifier converter, full-wave rectifier converter and the AC-AC converter. The Thyristor gate controller (SCR) can measure of some parameters for different value of angle so fast and so easy for teaching reason. The control circuit is designed using Psim Software and OrCad and consists of multiple sub circuits such as SCR circuit main controller and transformer circuit. The firing angle is control by adjusting reference direct current (DC) voltage which is compared with a saw tooth voltage from a ramp generator circuit before it is feed into the gate of Thyristors. A sinusoidal alternating current (AC) voltage is supplied to the full bridge rectifier circuit. To verify the operation of a SCR circuit, a simulation is performed using Psim software. Lastly, the circuit was developed and the experimental results are compared with the simulation results.