This is a simulation model for type-2 semi-controlled rectifier. Type-2 semi-controlled rectifier provides single quadrant operation and it has equal average & RMS current in all of the semi-conductor devices. However, it suffers from 'half wave' effect and a freewheeling diode at the output is needed to overcome this issue.
Amit Singh (2020). Thyristor based Semi-controlled Rectifier (https://www.mathworks.com/matlabcentral/fileexchange/74746-thyristor-based-semi-controlled-rectifier), MATLAB Central File Exchange. Retrieved .