Development of a graphical interface programmed with Matlab App Designer for the analysis of the SCR thyristor using a sinusoidal signal source for its single-phase configuration

Abstract

A graphical interface programmed with MATLAB App Designer was developed for the analysis of the SCR thyristor using an alternating current source with a single-phase sinusoidal signal. As a first step, the mathematical analysis was made to design the graph of the firing angle in a circuit made up of an SCR. Following this, programming was carried out to calculate the intersection points of the zero crossing for the simulation in a more interactive way, where the user makes changes in the parameters in order to alter the oscillations and obtain the graphic behavior of the load and the thyristor visually. This program allows students to use it intuitively along with the view of the calculations, graphs, and to control the trigger signal on the interface without making use of virtual simulators and measurement equipment available on the market at a high cost. This facilitates the teaching-learning abilities in the subjects of computer fundamentals, applied programming and power electronics. This graphical interface allows the development of theoretical-practical activities in person and at a distance, to the design of electronic circuits.