**6. Modeling and simulation of thyristor rectifiers**

The Simulink model of the controlled rectifier is very close to the Simulink model of the diode rectifier. Only the condition to turn the thyristor on is different to the condition to turn the diode on. For an ideal thyristor, it is recalled that the thyristor turn-on if its voltage is positive and if a current pulse is sent to the gate.

To illustrate the modelling of controlled rectifier with Simulink, let's look at one of the principles of speed control of DC machines.
