Abstract: This paper introduces the theory of three-phase bridge semi-controlled and full-controlled rectifier circuit.A technique is presented in setting up the models at the base of the Matlab/Simulink software.The working conditions of the electric circuit with pure resistance load or inductive and resistance load are also compared.Simulation results of  Power System toolbox in Matlab  show that the model is correct.

Key words: three-phase bridge semi-controlled rectifier, three-phase bridge full-controlled rectifier, modeling, simulation