MATLAB model capable of simulating actual characteristics of thyristor and construction method

The invention provides an MATLAB model capable of simulating actual characteristics of a thyristor and a construction method. The structure comprises an original thyristor model in an MATLAB, a signal control module, an enabling system module and a follow current module; on the basis of the thyristor model in the MATLAB, a current value is acquired and subjected to logic calculation through the signal control module and is used as an input signal and an enabling control signal of the enabling system module; and an output signal is used for controlling the follow current module through comparative calculation of the enabling system module, so that a follow-current current of the thyristor is generated. On the basis, voltage and current in the model are measured, and four ports a, k, g and m of the model are defined again to form a newly-established thyristor model. The MATLAB model has the advantages that a reverse recovery curve of the current in the thyristor can be reflected, and an ideal defect that a current curve in the thyristor model in the MATLAB is suddenly stopped is compensated, so that the actual characteristics of the thyristor are represented and the application value is relatively high.