Study on Electro-thermal Model of Thyristor in PSpice

A novel dynamic electro-thermal model,which can be used to predict the temperatures of device junctions,is developed for the thyristor by coupling a thyristor electrical model with dynamic thermal models.The thermal impedance parameters can be obtained by the finite element method,and the electrical parameters can be extracted from data sheet or using tools such as Matlab.The model is implemented in the PSpice circuit simulator and is connected to external circuits.Validation is accomplished by comparing the model results with the data sheet information.